Add support for wolfSSL cryptographic library

Allow hostapd/wpa_supplicant to be compiled with the wolfSSL
cryptography and TLS library.

Signed-off-by: Sean Parkinson <sean@wolfssl.com>

hostapd/Makefile

@@ -651,7 +651,29 @@ CFLAGS += -DCONFIG_TLSV12
 NEED_SHA256=y
 endif
 
+ifeq ($(CONFIG_TLS), wolfssl)
+CONFIG_CRYPTO=wolfssl
+ifdef TLS_FUNCS
+OBJS += ../src/crypto/tls_wolfssl.o
+LIBS += -lwolfssl -lm
+endif
+OBJS += ../src/crypto/crypto_wolfssl.o
+HOBJS += ../src/crypto/crypto_wolfssl.o
+ifdef NEED_FIPS186_2_PRF
+OBJS += ../src/crypto/fips_prf_wolfssl.o
+endif
+NEED_SHA256=y
+NEED_TLS_PRF_SHA256=y
+LIBS += -lwolfssl -lm
+LIBS_h += -lwolfssl -lm
+ifdef CONFIG_TLS_ADD_DL
+LIBS += -ldl
+LIBS_h += -ldl
+endif
+endif
+
 ifeq ($(CONFIG_TLS), openssl)
+CONFIG_CRYPTO=openssl
 ifdef TLS_FUNCS
 OBJS += ../src/crypto/tls_openssl.o
 OBJS += ../src/crypto/tls_openssl_ocsp.o
@@ -855,8 +877,10 @@ AESOBJS += ../src/crypto/aes-internal.o ../src/crypto/aes-internal-enc.o
 endif
 
 ifneq ($(CONFIG_TLS), openssl)
+ifneq ($(CONFIG_TLS), wolfssl)
 AESOBJS += ../src/crypto/aes-wrap.o
 endif
+endif
 ifdef NEED_AES_EAX
 AESOBJS += ../src/crypto/aes-eax.o
 NEED_AES_CTR=y
@@ -881,19 +905,23 @@ endif
 ifdef NEED_AES_UNWRAP
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
+ifneq ($(CONFIG_TLS), wolfssl)
 NEED_AES_DEC=y
 AESOBJS += ../src/crypto/aes-unwrap.o
 endif
 endif
 endif
+endif
 ifdef NEED_AES_CBC
 NEED_AES_DEC=y
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
+ifneq ($(CONFIG_TLS), wolfssl)
 AESOBJS += ../src/crypto/aes-cbc.o
 endif
 endif
 endif
+endif
 ifdef NEED_AES_DEC
 ifdef CONFIG_INTERNAL_AES
 AESOBJS += ../src/crypto/aes-internal-dec.o
@@ -907,10 +935,12 @@ ifdef NEED_SHA1
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
 ifneq ($(CONFIG_TLS), gnutls)
+ifneq ($(CONFIG_TLS), wolfssl)
 SHA1OBJS += ../src/crypto/sha1.o
 endif
 endif
 endif
+endif
 SHA1OBJS += ../src/crypto/sha1-prf.o
 ifdef CONFIG_INTERNAL_SHA1
 SHA1OBJS += ../src/crypto/sha1-internal.o
@@ -919,8 +949,10 @@ SHA1OBJS += ../src/crypto/fips_prf_internal.o
 endif
 endif
 ifneq ($(CONFIG_TLS), openssl)
+ifneq ($(CONFIG_TLS), wolfssl)
 SHA1OBJS += ../src/crypto/sha1-pbkdf2.o
 endif
+endif
 ifdef NEED_T_PRF
 SHA1OBJS += ../src/crypto/sha1-tprf.o
 endif
@@ -936,10 +968,12 @@ endif
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
 ifneq ($(CONFIG_TLS), gnutls)
+ifneq ($(CONFIG_TLS), wolfssl)
 OBJS += ../src/crypto/md5.o
 endif
 endif
 endif
+endif
 
 ifdef NEED_MD5
 ifdef CONFIG_INTERNAL_MD5
@@ -955,6 +989,7 @@ endif
 endif
 
 ifdef NEED_DES
+CFLAGS += -DCONFIG_DES
 ifdef CONFIG_INTERNAL_DES
 OBJS += ../src/crypto/des-internal.o
 endif
@@ -977,10 +1012,12 @@ CFLAGS += -DCONFIG_SHA256
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
 ifneq ($(CONFIG_TLS), gnutls)
+ifneq ($(CONFIG_TLS), wolfssl)
 OBJS += ../src/crypto/sha256.o
 endif
 endif
 endif
+endif
 OBJS += ../src/crypto/sha256-prf.o
 ifdef CONFIG_INTERNAL_SHA256
 OBJS += ../src/crypto/sha256-internal.o
@@ -1003,10 +1040,12 @@ CFLAGS += -DCONFIG_SHA384
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
 ifneq ($(CONFIG_TLS), gnutls)
+ifneq ($(CONFIG_TLS), wolfssl)
 OBJS += ../src/crypto/sha384.o
 endif
 endif
 endif
+endif
 OBJS += ../src/crypto/sha384-prf.o
 endif
 ifdef NEED_SHA512
@@ -1014,10 +1053,12 @@ CFLAGS += -DCONFIG_SHA512
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
 ifneq ($(CONFIG_TLS), gnutls)
+ifneq ($(CONFIG_TLS), wolfssl)
 OBJS += ../src/crypto/sha512.o
 endif
 endif
 endif
+endif
 OBJS += ../src/crypto/sha512-prf.o
 endif
 
@@ -1056,10 +1097,12 @@ HOBJS += ../src/utils/eloop.o
 HOBJS += $(SHA1OBJS)
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
+ifneq ($(CONFIG_TLS), wolfssl)
 HOBJS += ../src/crypto/md5.o
 endif
 endif
 endif
+endif
 
 ifdef CONFIG_RADIUS_SERVER
 CFLAGS += -DRADIUS_SERVER
@@ -1250,7 +1293,8 @@ endif
 ifdef CONFIG_INTERNAL_MD5
 NOBJS += ../src/crypto/md5-internal.o
 endif
-NOBJS += ../src/crypto/crypto_openssl.o ../src/utils/os_$(CONFIG_OS).o
+NOBJS += ../src/crypto/crypto_$(CONFIG_CRYPTO).o
+NOBJS += ../src/utils/os_$(CONFIG_OS).o
 NOBJS += ../src/utils/wpa_debug.o
 NOBJS += ../src/utils/wpabuf.o
 ifdef CONFIG_WPA_TRACE

src/crypto/crypto_wolfssl.c

@@ -0,0 +1,1670 @@
+/*
+ * Wrapper functions for libwolfssl
+ * Copyright (c) 2004-2017, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "crypto.h"
+
+#define WOLFSSL_AES_DIRECT
+#define HAVE_AESGCM
+#define HAVE_AES_KEYWRAP
+#define WOLFSSL_SHA384
+#define WOLFSSL_SHA512
+#define WOLFSSL_CMAC
+#define HAVE_ECC
+#define USE_FAST_MATH
+#define WOLFSSL_KEY_GEN
+
+#include <wolfssl/options.h>
+/* wolfSSL headers */
+#include <wolfssl/wolfcrypt/md4.h>
+#include <wolfssl/wolfcrypt/md5.h>
+#include <wolfssl/wolfcrypt/sha.h>
+#include <wolfssl/wolfcrypt/sha256.h>
+#include <wolfssl/wolfcrypt/sha512.h>
+#include <wolfssl/wolfcrypt/hmac.h>
+#include <wolfssl/wolfcrypt/pwdbased.h>
+#include <wolfssl/wolfcrypt/arc4.h>
+#include <wolfssl/wolfcrypt/des3.h>
+#include <wolfssl/wolfcrypt/aes.h>
+#include <wolfssl/wolfcrypt/dh.h>
+#include <wolfssl/wolfcrypt/cmac.h>
+#include <wolfssl/wolfcrypt/ecc.h>
+#include <wolfssl/openssl/bn.h>
+
+
+#ifndef CONFIG_FIPS
+
+int md4_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
+{
+	Md4 md4;
+	size_t i;
+
+	if (TEST_FAIL())
+		return -1;
+
+	wc_InitMd4(&md4);
+
+	for (i = 0; i < num_elem; i++)
+		wc_Md4Update(&md4, addr[i], len[i]);
+
+	wc_Md4Final(&md4, mac);
+
+	return 0;
+}
+
+
+int md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
+{
+	Md5 md5;
+	size_t i;
+
+	if (TEST_FAIL())
+		return -1;
+
+	wc_InitMd5(&md5);
+
+	for (i = 0; i < num_elem; i++)
+		wc_Md5Update(&md5, addr[i], len[i]);
+
+	wc_Md5Final(&md5, mac);
+
+	return 0;
+}
+
+#endif /* CONFIG_FIPS */
+
+
+int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
+{
+	Sha sha;
+	size_t i;
+
+	if (TEST_FAIL())
+		return -1;
+
+	wc_InitSha(&sha);
+
+	for (i = 0; i < num_elem; i++)
+		wc_ShaUpdate(&sha, addr[i], len[i]);
+
+	wc_ShaFinal(&sha, mac);
+
+	return 0;
+}
+
+
+#ifndef NO_SHA256_WRAPPER
+int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
+		  u8 *mac)
+{
+	Sha256 sha256;
+	size_t i;
+
+	if (TEST_FAIL())
+		return -1;
+
+	wc_InitSha256(&sha256);
+
+	for (i = 0; i < num_elem; i++)
+		wc_Sha256Update(&sha256, addr[i], len[i]);
+
+	wc_Sha256Final(&sha256, mac);
+
+	return 0;
+}
+#endif /* NO_SHA256_WRAPPER */
+
+
+#ifdef CONFIG_SHA384
+int sha384_vector(size_t num_elem, const u8 *addr[], const size_t *len,
+		  u8 *mac)
+{
+	Sha384 sha384;
+	size_t i;
+
+	if (TEST_FAIL())
+		return -1;
+
+	wc_InitSha384(&sha384);
+
+	for (i = 0; i < num_elem; i++)
+		wc_Sha384Update(&sha384, addr[i], len[i]);
+
+	wc_Sha384Final(&sha384, mac);
+
+	return 0;
+}
+#endif /* CONFIG_SHA384 */
+
+
+#ifdef CONFIG_SHA512
+int sha512_vector(size_t num_elem, const u8 *addr[], const size_t *len,
+		  u8 *mac)
+{
+	Sha512 sha512;
+	size_t i;
+
+	if (TEST_FAIL())
+		return -1;
+
+	wc_InitSha512(&sha512);
+
+	for (i = 0; i < num_elem; i++)
+		wc_Sha512Update(&sha512, addr[i], len[i]);
+
+	wc_Sha512Final(&sha512, mac);
+
+	return 0;
+}
+#endif /* CONFIG_SHA512 */
+
+
+static int wolfssl_hmac_vector(int type, const u8 *key,
+			       size_t key_len, size_t num_elem,
+			       const u8 *addr[], const size_t *len, u8 *mac,
+			       unsigned int mdlen)
+{
+	Hmac hmac;
+	size_t i;
+
+	(void) mdlen;
+
+	if (TEST_FAIL())
+		return -1;
+
+	if (wc_HmacSetKey(&hmac, type, key, (word32) key_len) != 0)
+		return -1;
+	for (i = 0; i < num_elem; i++)
+		if (wc_HmacUpdate(&hmac, addr[i], len[i]) != 0)
+			return -1;
+	if (wc_HmacFinal(&hmac, mac) != 0)
+		return -1;
+	return 0;
+}
+
+
+#ifndef CONFIG_FIPS
+
+int hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem,
+		    const u8 *addr[], const size_t *len, u8 *mac)
+{
+	return wolfssl_hmac_vector(MD5, key, key_len, num_elem, addr, len, mac,
+				   16);
+}
+
+
+int hmac_md5(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
+	     u8 *mac)
+{
+	return hmac_md5_vector(key, key_len, 1, &data, &data_len, mac);
+}
+
+#endif /* CONFIG_FIPS */
+
+
+int hmac_sha1_vector(const u8 *key, size_t key_len, size_t num_elem,
+		     const u8 *addr[], const size_t *len, u8 *mac)
+{
+	return wolfssl_hmac_vector(SHA, key, key_len, num_elem, addr, len, mac,
+				   20);
+}
+
+
+int hmac_sha1(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
+	      u8 *mac)
+{
+	return hmac_sha1_vector(key, key_len, 1, &data, &data_len, mac);
+}
+
+
+#ifdef CONFIG_SHA256
+
+int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
+		       const u8 *addr[], const size_t *len, u8 *mac)
+{
+	return wolfssl_hmac_vector(SHA256, key, key_len, num_elem, addr, len,
+				   mac, 32);
+}
+
+
+int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
+		size_t data_len, u8 *mac)
+{
+	return hmac_sha256_vector(key, key_len, 1, &data, &data_len, mac);
+}
+
+#endif /* CONFIG_SHA256 */
+
+
+#ifdef CONFIG_SHA384
+
+int hmac_sha384_vector(const u8 *key, size_t key_len, size_t num_elem,
+		       const u8 *addr[], const size_t *len, u8 *mac)
+{
+	return wolfssl_hmac_vector(SHA384, key, key_len, num_elem, addr, len,
+				   mac, 48);
+}
+
+
+int hmac_sha384(const u8 *key, size_t key_len, const u8 *data,
+		size_t data_len, u8 *mac)
+{
+	return hmac_sha384_vector(key, key_len, 1, &data, &data_len, mac);
+}
+
+#endif /* CONFIG_SHA384 */
+
+
+#ifdef CONFIG_SHA512
+
+int hmac_sha512_vector(const u8 *key, size_t key_len, size_t num_elem,
+		       const u8 *addr[], const size_t *len, u8 *mac)
+{
+	return wolfssl_hmac_vector(SHA512, key, key_len, num_elem, addr, len,
+				   mac, 64);
+}
+
+
+int hmac_sha512(const u8 *key, size_t key_len, const u8 *data,
+		size_t data_len, u8 *mac)
+{
+	return hmac_sha512_vector(key, key_len, 1, &data, &data_len, mac);
+}
+
+#endif /* CONFIG_SHA512 */
+
+
+int pbkdf2_sha1(const char *passphrase, const u8 *ssid, size_t ssid_len,
+		int iterations, u8 *buf, size_t buflen)
+{
+	if (wc_PBKDF2(buf, (const byte*)passphrase, os_strlen(passphrase), ssid,
+		      ssid_len, iterations, buflen, SHA) != 0)
+		return -1;
+	return 0;
+}
+
+
+#ifdef CONFIG_DES
+int des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
+{
+	Des des;
+	u8  pkey[8], next, tmp;
+	int i;
+
+	/* Add parity bits to the key */
+	next = 0;
+	for (i = 0; i < 7; i++) {
+		tmp = key[i];
+		pkey[i] = (tmp >> i) | next | 1;
+		next = tmp << (7 - i);
+	}
+	pkey[i] = next | 1;
+
+	wc_Des_SetKey(&des, pkey, NULL, DES_ENCRYPTION);
+	wc_Des_EcbEncrypt(&des, cypher, clear, DES_BLOCK_SIZE);
+
+	return 0;
+}
+#endif /* CONFIG_DES */
+
+
+void * aes_encrypt_init(const u8 *key, size_t len)
+{
+	Aes *aes;
+
+	if (TEST_FAIL())
+		return NULL;
+
+	aes = os_malloc(sizeof(Aes));
+	if (!aes)
+		return NULL;
+
+	if (wc_AesSetKey(aes, key, len, NULL, AES_ENCRYPTION) < 0) {
+		os_free(aes);
+		return NULL;
+	}
+
+	return aes;
+}
+
+
+int aes_encrypt(void *ctx, const u8 *plain, u8 *crypt)
+{
+	wc_AesEncryptDirect(ctx, crypt, plain);
+	return 0;
+}
+
+
+void aes_encrypt_deinit(void *ctx)
+{
+	os_free(ctx);
+}
+
+
+void * aes_decrypt_init(const u8 *key, size_t len)
+{
+	Aes *aes;
+
+	if (TEST_FAIL())
+		return NULL;
+
+	aes = os_malloc(sizeof(Aes));
+	if (!aes)
+		return NULL;
+
+	if (wc_AesSetKey(aes, key, len, NULL, AES_DECRYPTION) < 0) {
+		os_free(aes);
+		return NULL;
+	}
+
+	return aes;
+}
+
+
+int aes_decrypt(void *ctx, const u8 *crypt, u8 *plain)
+{
+	wc_AesDecryptDirect(ctx, plain, crypt);
+	return 0;
+}
+
+
+void aes_decrypt_deinit(void *ctx)
+{
+	os_free(ctx);
+}
+
+
+int aes_128_cbc_encrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
+{
+	Aes aes;
+	int ret;
+
+	if (TEST_FAIL())
+		return -1;
+
+	ret = wc_AesSetKey(&aes, key, 16, iv, AES_ENCRYPTION);
+	if (ret != 0)
+		return -1;
+
+	ret = wc_AesCbcEncrypt(&aes, data, data, data_len);
+	if (ret != 0)
+		return -1;
+	return 0;
+}
+
+
+int aes_128_cbc_decrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
+{
+	Aes aes;
+	int ret;
+
+	if (TEST_FAIL())
+		return -1;
+
+	ret = wc_AesSetKey(&aes, key, 16, iv, AES_DECRYPTION);
+	if (ret != 0)
+		return -1;
+
+	ret = wc_AesCbcDecrypt(&aes, data, data, data_len);
+	if (ret != 0)
+		return -1;
+	return 0;
+}
+
+
+int aes_wrap(const u8 *kek, size_t kek_len, int n, const u8 *plain, u8 *cipher)
+{
+	int ret;
+
+	ret = wc_AesKeyWrap(kek, kek_len, plain, n * 8, cipher, (n + 1) * 8,
+			    NULL);
+	return ret != (n + 1) * 8 ? -1 : 0;
+}
+
+
+int aes_unwrap(const u8 *kek, size_t kek_len, int n, const u8 *cipher,
+	       u8 *plain)
+{
+	int ret;
+
+	ret = wc_AesKeyUnWrap(kek, kek_len, cipher, (n + 1) * 8, plain, n * 8,
+			      NULL);
+	return ret != n * 8 ? -1 : 0;
+}
+
+
+#ifndef CONFIG_NO_RC4
+int rc4_skip(const u8 *key, size_t keylen, size_t skip, u8 *data,
+	     size_t data_len)
+{
+#ifndef NO_RC4
+	Arc4 arc4;
+	unsigned char skip_buf[16];
+
+	wc_Arc4SetKey(&arc4, key, keylen);
+
+	while (skip >= sizeof(skip_buf)) {
+		size_t len = skip;
+
+		if (len > sizeof(skip_buf))
+			len = sizeof(skip_buf);
+		wc_Arc4Process(&arc4, skip_buf, skip_buf, len);
+		skip -= len;
+	}
+
+	wc_Arc4Process(&arc4, data, data, data_len);
+
+	return 0;
+#else /* NO_RC4 */
+	return -1;
+#endif /* NO_RC4 */
+}
+#endif /* CONFIG_NO_RC4 */
+
+
+#if defined(EAP_IKEV2) || defined(EAP_IKEV2_DYNAMIC) \
+		       || defined(EAP_SERVER_IKEV2)
+union wolfssl_cipher {
+	Aes aes;
+	Des3 des3;
+	Arc4 arc4;
+};
+
+struct crypto_cipher {
+	enum crypto_cipher_alg alg;
+	union wolfssl_cipher enc;
+	union wolfssl_cipher dec;
+};
+
+struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg,
+					  const u8 *iv, const u8 *key,
+					  size_t key_len)
+{
+	struct crypto_cipher *ctx;
+
+	ctx = os_zalloc(sizeof(*ctx));
+	if (!ctx)
+		return NULL;
+
+	switch (alg) {
+#ifndef CONFIG_NO_RC4
+#ifndef NO_RC4
+	case CRYPTO_CIPHER_ALG_RC4:
+		wc_Arc4SetKey(&ctx->enc.arc4, key, key_len);
+		wc_Arc4SetKey(&ctx->dec.arc4, key, key_len);
+		break;
+#endif /* NO_RC4 */
+#endif /* CONFIG_NO_RC4 */
+#ifndef NO_AES
+	case CRYPTO_CIPHER_ALG_AES:
+		switch (key_len) {
+		case 16:
+		case 24:
+		case 32:
+			break;
+		default:
+			os_free(ctx);
+			return NULL;
+		}
+		if (wc_AesSetKey(&ctx->enc.aes, key, key_len, iv,
+				 AES_ENCRYPTION) ||
+		    wc_AesSetKey(&ctx->dec.aes, key, key_len, iv,
+				 AES_DECRYPTION)) {
+			os_free(ctx);
+			return NULL;
+		}
+		break;
+#endif /* NO_AES */
+#ifndef NO_DES3
+	case CRYPTO_CIPHER_ALG_3DES:
+		if (key_len != DES3_KEYLEN ||
+		    wc_Des3_SetKey(&ctx->enc.des3, key, iv, DES_ENCRYPTION) ||
+		    wc_Des3_SetKey(&ctx->dec.des3, key, iv, DES_DECRYPTION)) {
+			os_free(ctx);
+			return NULL;
+		}
+		break;
+#endif /* NO_DES3 */
+	case CRYPTO_CIPHER_ALG_RC2:
+	case CRYPTO_CIPHER_ALG_DES:
+	default:
+		os_free(ctx);
+		return NULL;
+	}
+
+	ctx->alg = alg;
+
+	return ctx;
+}
+
+
+int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,
+			  u8 *crypt, size_t len)
+{
+	switch (ctx->alg) {
+#ifndef CONFIG_NO_RC4
+#ifndef NO_RC4
+	case CRYPTO_CIPHER_ALG_RC4:
+		wc_Arc4Process(&ctx->enc.arc4, crypt, plain, len);
+		return 0;
+#endif /* NO_RC4 */
+#endif /* CONFIG_NO_RC4 */
+#ifndef NO_AES
+	case CRYPTO_CIPHER_ALG_AES:
+		if (wc_AesCbcEncrypt(&ctx->enc.aes, crypt, plain, len) != 0)
+			return -1;
+		return 0;
+#endif /* NO_AES */
+#ifndef NO_DES3
+	case CRYPTO_CIPHER_ALG_3DES:
+		if (wc_Des3_CbcEncrypt(&ctx->enc.des3, crypt, plain, len) != 0)
+			return -1;
+		return 0;
+#endif /* NO_DES3 */
+	default:
+		return -1;
+	}
+	return -1;
+}
+
+
+int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,
+			  u8 *plain, size_t len)
+{
+	switch (ctx->alg) {
+#ifndef CONFIG_NO_RC4
+#ifndef NO_RC4
+	case CRYPTO_CIPHER_ALG_RC4:
+		wc_Arc4Process(&ctx->dec.arc4, plain, crypt, len);
+		return 0;
+#endif /* NO_RC4 */
+#endif /* CONFIG_NO_RC4 */
+#ifndef NO_AES
+	case CRYPTO_CIPHER_ALG_AES:
+		if (wc_AesCbcDecrypt(&ctx->dec.aes, plain, crypt, len) != 0)
+			return -1;
+		return 0;
+#endif /* NO_AES */
+#ifndef NO_DES3
+	case CRYPTO_CIPHER_ALG_3DES:
+		if (wc_Des3_CbcDecrypt(&ctx->dec.des3, plain, crypt, len) != 0)
+			return -1;
+		return 0;
+#endif /* NO_DES3 */
+	default:
+		return -1;
+	}
+	return -1;
+}
+
+
+void crypto_cipher_deinit(struct crypto_cipher *ctx)
+{
+	os_free(ctx);
+}
+
+#endif
+
+
+#ifdef CONFIG_WPS_NFC
+
+static const unsigned char RFC3526_PRIME_1536[] = {
+	0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2,
+	0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
+	0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6,
+	0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
+	0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D,
+	0xF2, 0x5F, 0x14, 0x37, 0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45,
+	0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6, 0xF4, 0x4C, 0x42, 0xE9,
+	0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
+	0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11,
+	0x7C, 0x4B, 0x1F, 0xE6, 0x49, 0x28, 0x66, 0x51, 0xEC, 0xE4, 0x5B, 0x3D,
+	0xC2, 0x00, 0x7C, 0xB8, 0xA1, 0x63, 0xBF, 0x05, 0x98, 0xDA, 0x48, 0x36,
+	0x1C, 0x55, 0xD3, 0x9A, 0x69, 0x16, 0x3F, 0xA8, 0xFD, 0x24, 0xCF, 0x5F,
+	0x83, 0x65, 0x5D, 0x23, 0xDC, 0xA3, 0xAD, 0x96, 0x1C, 0x62, 0xF3, 0x56,
+	0x20, 0x85, 0x52, 0xBB, 0x9E, 0xD5, 0x29, 0x07, 0x70, 0x96, 0x96, 0x6D,
+	0x67, 0x0C, 0x35, 0x4E, 0x4A, 0xBC, 0x98, 0x04, 0xF1, 0x74, 0x6C, 0x08,
+	0xCA, 0x23, 0x73, 0x27, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
+};
+
+static const unsigned char RFC3526_GENERATOR_1536[] = {
+	0x02
+};
+
+#define RFC3526_LEN sizeof(RFC3526_PRIME_1536)
+
+
+void * dh5_init(struct wpabuf **priv, struct wpabuf **publ)
+{
+	WC_RNG rng;
+	DhKey *ret = NULL;
+	DhKey *dh = NULL;
+	struct wpabuf *privkey = NULL;
+	struct wpabuf *pubkey = NULL;
+	word32 priv_sz, pub_sz;
+
+	*priv = NULL;
+	wpabuf_free(*publ);
+	*publ = NULL;
+
+	dh = os_malloc(sizeof(DhKey));
+	if (!dh)
+		return NULL;
+	wc_InitDhKey(dh);
+
+	if (wc_InitRng(&rng) != 0) {
+		os_free(dh);
+		return NULL;
+	}
+
+	privkey = wpabuf_alloc(RFC3526_LEN);
+	pubkey = wpabuf_alloc(RFC3526_LEN);
+	if (!privkey || !pubkey)
+		goto done;
+
+	if (wc_DhSetKey(dh, RFC3526_PRIME_1536, sizeof(RFC3526_PRIME_1536),
+			RFC3526_GENERATOR_1536, sizeof(RFC3526_GENERATOR_1536))
+	    != 0)
+		goto done;
+
+	if (wc_DhGenerateKeyPair(dh, &rng, wpabuf_mhead(privkey), &priv_sz,
+				 wpabuf_mhead(pubkey), &pub_sz) != 0)
+		goto done;
+
+	wpabuf_put(privkey, priv_sz);
+	wpabuf_put(pubkey, pub_sz);
+
+	ret = dh;
+	*priv = privkey;
+	*publ = pubkey;
+	dh = NULL;
+	privkey = NULL;
+	pubkey = NULL;
+done:
+	wpabuf_clear_free(pubkey);
+	wpabuf_clear_free(privkey);
+	if (dh) {
+		wc_FreeDhKey(dh);
+		os_free(dh);
+	}
+	wc_FreeRng(&rng);
+	return ret;
+}
+
+
+void * dh5_init_fixed(const struct wpabuf *priv, const struct wpabuf *publ)
+{
+	DhKey *ret = NULL;
+	DhKey *dh;
+	byte *secret;
+	word32 secret_sz;
+
+	dh = os_malloc(sizeof(DhKey));
+	if (!dh)
+		return NULL;
+	wc_InitDhKey(dh);
+
+	secret = os_malloc(RFC3526_LEN);
+	if (!secret)
+		goto done;
+
+	if (wc_DhSetKey(dh, RFC3526_PRIME_1536, sizeof(RFC3526_PRIME_1536),
+			RFC3526_GENERATOR_1536, sizeof(RFC3526_GENERATOR_1536))
+	    != 0)
+		goto done;
+
+	if (wc_DhAgree(dh, secret, &secret_sz, wpabuf_head(priv),
+		       wpabuf_len(priv), RFC3526_GENERATOR_1536,
+		       sizeof(RFC3526_GENERATOR_1536)) != 0)
+		goto done;
+
+	if (secret_sz != wpabuf_len(publ) ||
+	    os_memcmp(secret, wpabuf_head(publ), secret_sz) != 0)
+		goto done;
+
+	ret = dh;
+	dh = NULL;
+done:
+	if (dh) {
+		wc_FreeDhKey(dh);
+		os_free(dh);
+	}
+	os_free(secret);
+	return ret;
+}
+
+
+struct wpabuf * dh5_derive_shared(void *ctx, const struct wpabuf *peer_public,
+				  const struct wpabuf *own_private)
+{
+	struct wpabuf *ret = NULL;
+	struct wpabuf *secret;
+	word32 secret_sz;
+
+	secret = wpabuf_alloc(RFC3526_LEN);
+	if (!secret)
+		goto done;
+
+	if (wc_DhAgree(ctx, wpabuf_mhead(secret), &secret_sz,
+		       wpabuf_head(own_private), wpabuf_len(own_private),
+		       wpabuf_head(peer_public), wpabuf_len(peer_public)) != 0)
+		goto done;
+
+	wpabuf_put(secret, secret_sz);
+
+	ret = secret;
+	secret = NULL;
+done:
+	wpabuf_clear_free(secret);
+	return ret;
+}
+
+
+void dh5_free(void *ctx)
+{
+	if (!ctx)
+		return;
+
+	wc_FreeDhKey(ctx);
+	os_free(ctx);
+}
+
+#endif /* CONFIG_WPS_NFC */
+
+
+int crypto_dh_init(u8 generator, const u8 *prime, size_t prime_len, u8 *privkey,
+		   u8 *pubkey)
+{
+	int ret = -1;
+	WC_RNG rng;
+	DhKey *dh = NULL;
+	word32 priv_sz, pub_sz;
+
+	if (TEST_FAIL())
+		return -1;
+
+	dh = os_malloc(sizeof(DhKey));
+	if (!dh)
+		return -1;
+	wc_InitDhKey(dh);
+
+	if (wc_InitRng(&rng) != 0) {
+		os_free(dh);
+		return -1;
+	}
+
+	if (wc_DhSetKey(dh, prime, prime_len, &generator, 1) != 0)
+		goto done;
+
+	if (wc_DhGenerateKeyPair(dh, &rng, privkey, &priv_sz, pubkey, &pub_sz)
+	    != 0)
+		goto done;
+
+	if (priv_sz < prime_len) {
+		size_t pad_sz = prime_len - priv_sz;
+
+		os_memmove(privkey + pad_sz, privkey, priv_sz);
+		os_memset(privkey, 0, pad_sz);
+	}
+
+	if (pub_sz < prime_len) {
+		size_t pad_sz = prime_len - pub_sz;
+
+		os_memmove(pubkey + pad_sz, pubkey, pub_sz);
+		os_memset(pubkey, 0, pad_sz);
+	}
+	ret = 0;
+done:
+	wc_FreeDhKey(dh);
+	os_free(dh);
+	wc_FreeRng(&rng);
+	return ret;
+}
+
+
+int crypto_dh_derive_secret(u8 generator, const u8 *prime, size_t prime_len,
+			    const u8 *privkey, size_t privkey_len,
+			    const u8 *pubkey, size_t pubkey_len,
+			    u8 *secret, size_t *len)
+{
+	int ret = -1;
+	DhKey *dh;
+	word32 secret_sz;
+
+	dh = os_malloc(sizeof(DhKey));
+	if (!dh)
+		return -1;
+	wc_InitDhKey(dh);
+
+	if (wc_DhSetKey(dh, prime, prime_len, &generator, 1) != 0)
+		goto done;
+
+	if (wc_DhAgree(dh, secret, &secret_sz, privkey, privkey_len, pubkey,
+		       pubkey_len) != 0)
+		goto done;
+
+	*len = secret_sz;
+	ret = 0;
+done:
+	wc_FreeDhKey(dh);
+	os_free(dh);
+	return ret;
+}
+
+
+#ifdef CONFIG_FIPS
+int crypto_get_random(void *buf, size_t len)
+{
+	int ret = 0;
+	WC_RNG rng;
+
+	if (wc_InitRng(&rng) != 0)
+		return -1;
+	if (wc_RNG_GenerateBlock(&rng, buf, len) != 0)
+		ret = -1;
+	wc_FreeRng(&rng);
+	return ret;
+}
+#endif /* CONFIG_FIPS */
+
+
+#if defined(EAP_PWD) || defined(EAP_SERVER_PWD)
+struct crypto_hash {
+	Hmac hmac;
+	int size;
+};
+
+
+struct crypto_hash * crypto_hash_init(enum crypto_hash_alg alg, const u8 *key,
+				      size_t key_len)
+{
+	struct crypto_hash *ret = NULL;
+	struct crypto_hash *hash;
+	int type;
+
+	hash = os_malloc(sizeof(*hash));
+	if (!hash)
+		goto done;
+
+	switch (alg) {
+#ifndef NO_MD5
+	case CRYPTO_HASH_ALG_HMAC_MD5:
+		hash->size = 16;
+		type = MD5;
+		break;
+#endif /* NO_MD5 */
+#ifndef NO_SHA
+	case CRYPTO_HASH_ALG_HMAC_SHA1:
+		type = SHA;
+		hash->size = 20;
+		break;
+#endif /* NO_SHA */
+#ifdef CONFIG_SHA256
+#ifndef NO_SHA256
+	case CRYPTO_HASH_ALG_HMAC_SHA256:
+		type = SHA256;
+		hash->size = 32;
+		break;
+#endif /* NO_SHA256 */
+#endif /* CONFIG_SHA256 */
+	default:
+		goto done;
+	}
+
+	if (wc_HmacSetKey(&hash->hmac, type, key, key_len) != 0)
+		goto done;
+
+	ret = hash;
+	hash = NULL;
+done:
+	os_free(hash);
+	return ret;
+}
+
+
+void crypto_hash_update(struct crypto_hash *ctx, const u8 *data, size_t len)
+{
+	if (!ctx)
+		return;
+	wc_HmacUpdate(&ctx->hmac, data, len);
+}
+
+
+int crypto_hash_finish(struct crypto_hash *ctx, u8 *mac, size_t *len)
+{
+	int ret = 0;
+
+	if (!ctx)
+		return -2;
+
+	if (!mac || !len)
+		goto done;
+
+	if (wc_HmacFinal(&ctx->hmac, mac) != 0) {
+		ret = -1;
+		goto done;
+	}
+
+	*len = ctx->size;
+	ret = 0;
+done:
+	bin_clear_free(ctx, sizeof(*ctx));
+	return ret;
+}
+
+#endif
+
+
+int omac1_aes_vector(const u8 *key, size_t key_len, size_t num_elem,
+		     const u8 *addr[], const size_t *len, u8 *mac)
+{
+	Cmac cmac;
+	size_t i;
+	word32 sz;
+
+	if (TEST_FAIL())
+		return -1;
+
+	if (wc_InitCmac(&cmac, key, key_len, WC_CMAC_AES, NULL) != 0)
+		return -1;
+
+	for (i = 0; i < num_elem; i++)
+		if (wc_CmacUpdate(&cmac, addr[i], len[i]) != 0)
+			return -1;
+
+	sz = AES_BLOCK_SIZE;
+	if (wc_CmacFinal(&cmac, mac, &sz) != 0 || sz != AES_BLOCK_SIZE)
+		return -1;
+
+	return 0;
+}
+
+
+int omac1_aes_128_vector(const u8 *key, size_t num_elem,
+			 const u8 *addr[], const size_t *len, u8 *mac)
+{
+	return omac1_aes_vector(key, 16, num_elem, addr, len, mac);
+}
+
+
+int omac1_aes_128(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
+{
+	return omac1_aes_128_vector(key, 1, &data, &data_len, mac);
+}
+
+
+int omac1_aes_256(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
+{
+	return omac1_aes_vector(key, 32, 1, &data, &data_len, mac);
+}
+
+
+struct crypto_bignum * crypto_bignum_init(void)
+{
+	mp_int *a;
+
+	if (TEST_FAIL())
+		return NULL;
+
+	a = os_malloc(sizeof(*a));
+	if (!a || mp_init(a) != MP_OKAY) {
+		os_free(a);
+		a = NULL;
+	}
+
+	return (struct crypto_bignum *) a;
+}
+
+
+struct crypto_bignum * crypto_bignum_init_set(const u8 *buf, size_t len)
+{
+	mp_int *a;
+
+	if (TEST_FAIL())
+		return NULL;
+
+	a = (mp_int *) crypto_bignum_init();
+	if (!a)
+		return NULL;
+
+	if (mp_read_unsigned_bin(a, buf, len) != MP_OKAY) {
+		os_free(a);
+		a = NULL;
+	}
+
+	return (struct crypto_bignum *) a;
+}
+
+
+void crypto_bignum_deinit(struct crypto_bignum *n, int clear)
+{
+	if (!n)
+		return;
+
+	if (clear)
+		mp_forcezero((mp_int *) n);
+	mp_clear((mp_int *) n);
+	os_free((mp_int *) n);
+}
+
+
+int crypto_bignum_to_bin(const struct crypto_bignum *a,
+			 u8 *buf, size_t buflen, size_t padlen)
+{
+	int num_bytes, offset;
+
+	if (TEST_FAIL())
+		return -1;
+
+	if (padlen > buflen)
+		return -1;
+
+	num_bytes = (mp_count_bits((mp_int *) a) + 7) / 8;
+	if ((size_t) num_bytes > buflen)
+		return -1;
+	if (padlen > (size_t) num_bytes)
+		offset = padlen - num_bytes;
+	else
+		offset = 0;
+
+	os_memset(buf, 0, offset);
+	mp_to_unsigned_bin((mp_int *) a, buf + offset);
+
+	return num_bytes + offset;
+}
+
+
+int crypto_bignum_rand(struct crypto_bignum *r, const struct crypto_bignum *m)
+{
+	int ret = 0;
+	WC_RNG rng;
+
+	if (wc_InitRng(&rng) != 0)
+		return -1;
+	if (mp_rand_prime((mp_int *) r,
+			  (mp_count_bits((mp_int *) m) + 7) / 8 * 2,
+			  &rng, NULL) != 0)
+		ret = -1;
+	if (ret == 0 &&
+	    mp_mod((mp_int *) r, (mp_int *) m, (mp_int *) r) != 0)
+		ret = -1;
+	wc_FreeRng(&rng);
+	return ret;
+}
+
+
+int crypto_bignum_add(const struct crypto_bignum *a,
+		      const struct crypto_bignum *b,
+		      struct crypto_bignum *r)
+{
+	return mp_add((mp_int *) a, (mp_int *) b,
+		      (mp_int *) r) == MP_OKAY ? 0 : -1;
+}
+
+
+int crypto_bignum_mod(const struct crypto_bignum *a,
+		      const struct crypto_bignum *m,
+		      struct crypto_bignum *r)
+{
+	return mp_mod((mp_int *) a, (mp_int *) m,
+		      (mp_int *) r) == MP_OKAY ? 0 : -1;
+}
+
+
+int crypto_bignum_exptmod(const struct crypto_bignum *b,
+			  const struct crypto_bignum *e,
+			  const struct crypto_bignum *m,
+			  struct crypto_bignum *r)
+{
+	if (TEST_FAIL())
+		return -1;
+
+	return mp_exptmod((mp_int *) b, (mp_int *) e, (mp_int *) m,
+			  (mp_int *) r) == MP_OKAY ?  0 : -1;
+}
+
+
+int crypto_bignum_inverse(const struct crypto_bignum *a,
+			  const struct crypto_bignum *m,
+			  struct crypto_bignum *r)
+{
+	if (TEST_FAIL())
+		return -1;
+
+	return mp_invmod((mp_int *) a, (mp_int *) m,
+			 (mp_int *) r) == MP_OKAY ? 0 : -1;
+}
+
+
+int crypto_bignum_sub(const struct crypto_bignum *a,
+		      const struct crypto_bignum *b,
+		      struct crypto_bignum *r)
+{
+	if (TEST_FAIL())
+		return -1;
+
+	return mp_add((mp_int *) a, (mp_int *) b,
+		      (mp_int *) r) == MP_OKAY ? 0 : -1;
+}
+
+
+int crypto_bignum_div(const struct crypto_bignum *a,
+		      const struct crypto_bignum *b,
+		      struct crypto_bignum *d)
+{
+	if (TEST_FAIL())
+		return -1;
+
+	return mp_div((mp_int *) a, (mp_int *) b, (mp_int *) d,
+		      NULL) == MP_OKAY ? 0 : -1;
+}
+
+
+int crypto_bignum_mulmod(const struct crypto_bignum *a,
+			 const struct crypto_bignum *b,
+			 const struct crypto_bignum *m,
+			 struct crypto_bignum *d)
+{
+	if (TEST_FAIL())
+		return -1;
+
+	return mp_mulmod((mp_int *) a, (mp_int *) b, (mp_int *) m,
+			 (mp_int *) d) == MP_OKAY ?  0 : -1;
+}
+
+
+int crypto_bignum_rshift(const struct crypto_bignum *a, int n,
+			 struct crypto_bignum *r)
+{
+	if (mp_copy((mp_int *) a, (mp_int *) r) != MP_OKAY)
+		return -1;
+	mp_rshd((mp_int *) r, n);
+	return 0;
+}
+
+
+int crypto_bignum_cmp(const struct crypto_bignum *a,
+		      const struct crypto_bignum *b)
+{
+	return mp_cmp((mp_int *) a, (mp_int *) b);
+}
+
+
+int crypto_bignum_bits(const struct crypto_bignum *a)
+{
+	return mp_count_bits((mp_int *) a);
+}
+
+
+int crypto_bignum_is_zero(const struct crypto_bignum *a)
+{
+	return mp_iszero((mp_int *) a);
+}
+
+
+int crypto_bignum_is_one(const struct crypto_bignum *a)
+{
+	return mp_isone((const mp_int *) a);
+}
+
+int crypto_bignum_is_odd(const struct crypto_bignum *a)
+{
+	return mp_isodd((mp_int *) a);
+}
+
+
+int crypto_bignum_legendre(const struct crypto_bignum *a,
+			   const struct crypto_bignum *p)
+{
+	mp_int t;
+	int ret;
+	int res = -2;
+
+	if (TEST_FAIL())
+		return -2;
+
+	if (mp_init(&t) != MP_OKAY)
+		return -2;
+
+	/* t = (p-1) / 2 */
+	ret = mp_sub_d((mp_int *) p, 1, &t);
+	if (ret == MP_OKAY)
+		mp_rshb(&t, 1);
+	if (ret == MP_OKAY)
+		ret = mp_exptmod((mp_int *) a, &t, (mp_int *) p, &t);
+	if (ret == MP_OKAY) {
+		if (mp_isone(&t))
+			res = 1;
+		else if (mp_iszero(&t))
+			res = 0;
+		else
+			res = -1;
+	}
+
+	mp_clear(&t);
+	return res;
+}
+
+
+#ifdef CONFIG_ECC
+
+int ecc_map(ecc_point *, mp_int *, mp_digit);
+int ecc_projective_add_point(ecc_point *P, ecc_point *Q, ecc_point *R,
+			     mp_int *a, mp_int *modulus, mp_digit mp);
+
+struct crypto_ec {
+	ecc_key key;
+	mp_int a;
+	mp_int prime;
+	mp_int order;
+	mp_digit mont_b;
+	mp_int b;
+};
+
+
+struct crypto_ec * crypto_ec_init(int group)
+{
+	int built = 0;
+	struct crypto_ec *e;
+	int curve_id;
+
+	/* Map from IANA registry for IKE D-H groups to OpenSSL NID */
+	switch (group) {
+	case 19:
+		curve_id = ECC_SECP256R1;
+		break;
+	case 20:
+		curve_id = ECC_SECP384R1;
+		break;
+	case 21:
+		curve_id = ECC_SECP521R1;
+		break;
+	case 25:
+		curve_id = ECC_SECP192R1;
+		break;
+	case 26:
+		curve_id = ECC_SECP224R1;
+		break;
+#ifdef HAVE_ECC_BRAINPOOL
+	case 27:
+		curve_id = ECC_BRAINPOOLP224R1;
+		break;
+	case 28:
+		curve_id = ECC_BRAINPOOLP256R1;
+		break;
+	case 29:
+		curve_id = ECC_BRAINPOOLP384R1;
+		break;
+	case 30:
+		curve_id = ECC_BRAINPOOLP512R1;
+		break;
+#endif /* HAVE_ECC_BRAINPOOL */
+	default:
+		return NULL;
+	}
+
+	e = os_zalloc(sizeof(*e));
+	if (!e)
+		return NULL;
+
+	if (wc_ecc_init(&e->key) != 0 ||
+	    wc_ecc_set_curve(&e->key, 0, curve_id) != 0 ||
+	    mp_init(&e->a) != MP_OKAY ||
+	    mp_init(&e->prime) != MP_OKAY ||
+	    mp_init(&e->order) != MP_OKAY ||
+	    mp_init(&e->b) != MP_OKAY ||
+	    mp_read_radix(&e->a, e->key.dp->Af, 16) != MP_OKAY ||
+	    mp_read_radix(&e->b, e->key.dp->Bf, 16) != MP_OKAY ||
+	    mp_read_radix(&e->prime, e->key.dp->prime, 16) != MP_OKAY ||
+	    mp_read_radix(&e->order, e->key.dp->order, 16) != MP_OKAY ||
+	    mp_montgomery_setup(&e->prime, &e->mont_b) != MP_OKAY)
+		goto done;
+
+	built = 1;
+done:
+	if (!built) {
+		crypto_ec_deinit(e);
+		e = NULL;
+	}
+	return e;
+}
+
+
+void crypto_ec_deinit(struct crypto_ec* e)
+{
+	if (!e)
+		return;
+
+	mp_clear(&e->b);
+	mp_clear(&e->order);
+	mp_clear(&e->prime);
+	mp_clear(&e->a);
+	wc_ecc_free(&e->key);
+	os_free(e);
+}
+
+
+int crypto_ec_cofactor(struct crypto_ec *e, struct crypto_bignum *cofactor)
+{
+	if (!e || !cofactor)
+		return -1;
+
+	mp_set((mp_int *) cofactor, e->key.dp->cofactor);
+	return 0;
+}
+
+
+struct crypto_ec_point * crypto_ec_point_init(struct crypto_ec *e)
+{
+	if (TEST_FAIL())
+		return NULL;
+	if (!e)
+		return NULL;
+	return (struct crypto_ec_point *) wc_ecc_new_point();
+}
+
+
+size_t crypto_ec_prime_len(struct crypto_ec *e)
+{
+	return (mp_count_bits(&e->prime) + 7) / 8;
+}
+
+
+size_t crypto_ec_prime_len_bits(struct crypto_ec *e)
+{
+	return mp_count_bits(&e->prime);
+}
+
+
+size_t crypto_ec_order_len(struct crypto_ec *e)
+{
+	return (mp_count_bits(&e->order) + 7) / 8;
+}
+
+
+const struct crypto_bignum * crypto_ec_get_prime(struct crypto_ec *e)
+{
+	return (const struct crypto_bignum *) &e->prime;
+}
+
+
+const struct crypto_bignum * crypto_ec_get_order(struct crypto_ec *e)
+{
+	return (const struct crypto_bignum *) &e->order;
+}
+
+
+void crypto_ec_point_deinit(struct crypto_ec_point *p, int clear)
+{
+	ecc_point *point = (ecc_point *) p;
+
+	if (!p)
+		return;
+
+	if (clear) {
+		mp_forcezero(point->x);
+		mp_forcezero(point->y);
+		mp_forcezero(point->z);
+	}
+	wc_ecc_del_point(point);
+}
+
+
+int crypto_ec_point_x(struct crypto_ec *e, const struct crypto_ec_point *p,
+		      struct crypto_bignum *x)
+{
+	return mp_copy(((ecc_point *) p)->x, (mp_int *) x) == MP_OKAY ? 0 : -1;
+}
+
+
+int crypto_ec_point_to_bin(struct crypto_ec *e,
+			   const struct crypto_ec_point *point, u8 *x, u8 *y)
+{
+	ecc_point *p = (ecc_point *) point;
+
+	if (TEST_FAIL())
+		return -1;
+
+	if (!mp_isone(p->z)) {
+		if (ecc_map(p, &e->prime, e->mont_b) != MP_OKAY)
+			return -1;
+	}
+
+	if (x) {
+		if (crypto_bignum_to_bin((struct crypto_bignum *)p->x, x,
+					 e->key.dp->size,
+					 e->key.dp->size) <= 0)
+			return -1;
+	}
+
+	if (y) {
+		if (crypto_bignum_to_bin((struct crypto_bignum *) p->y, y,
+					 e->key.dp->size,
+					 e->key.dp->size) <= 0)
+			return -1;
+	}
+
+	return 0;
+}
+
+
+struct crypto_ec_point * crypto_ec_point_from_bin(struct crypto_ec *e,
+						  const u8 *val)
+{
+	ecc_point *point = NULL;
+	int loaded = 0;
+
+	if (TEST_FAIL())
+		return NULL;
+
+	point = wc_ecc_new_point();
+	if (!point)
+		goto done;
+
+	if (mp_read_unsigned_bin(point->x, val, e->key.dp->size) != MP_OKAY)
+		goto done;
+	val += e->key.dp->size;
+	if (mp_read_unsigned_bin(point->y, val, e->key.dp->size) != MP_OKAY)
+		goto done;
+	mp_set(point->z, 1);
+
+	loaded = 1;
+done:
+	if (!loaded) {
+		wc_ecc_del_point(point);
+		point = NULL;
+	}
+	return (struct crypto_ec_point *) point;
+}
+
+
+int crypto_ec_point_add(struct crypto_ec *e, const struct crypto_ec_point *a,
+			const struct crypto_ec_point *b,
+			struct crypto_ec_point *c)
+{
+	mp_int mu;
+	ecc_point *ta = NULL, *tb = NULL;
+	ecc_point *pa = (ecc_point *) a, *pb = (ecc_point *) b;
+	mp_int *modulus = &e->prime;
+	int ret;
+
+	if (TEST_FAIL())
+		return -1;
+
+	ret = mp_init(&mu);
+	if (ret != MP_OKAY)
+		return -1;
+
+	ret = mp_montgomery_calc_normalization(&mu, modulus);
+	if (ret != MP_OKAY) {
+		mp_clear(&mu);
+		return -1;
+	}
+
+	if (!mp_isone(&mu)) {
+		ta = wc_ecc_new_point();
+		if (!ta) {
+			mp_clear(&mu);
+			return -1;
+		}
+		tb = wc_ecc_new_point();
+		if (!tb) {
+			wc_ecc_del_point(ta);
+			mp_clear(&mu);
+			return -1;
+		}
+
+		if (mp_mulmod(pa->x, &mu, modulus, ta->x) != MP_OKAY ||
+		    mp_mulmod(pa->y, &mu, modulus, ta->y) != MP_OKAY ||
+		    mp_mulmod(pa->z, &mu, modulus, ta->z) != MP_OKAY ||
+		    mp_mulmod(pb->x, &mu, modulus, tb->x) != MP_OKAY ||
+		    mp_mulmod(pb->y, &mu, modulus, tb->y) != MP_OKAY ||
+		    mp_mulmod(pb->z, &mu, modulus, tb->z) != MP_OKAY) {
+			ret = -1;
+			goto end;
+		}
+		pa = ta;
+		pb = tb;
+	}
+
+	ret = ecc_projective_add_point(pa, pb, (ecc_point *) c, &e->a,
+				       &e->prime, e->mont_b);
+	if (ret != 0) {
+		ret = -1;
+		goto end;
+	}
+
+	if (ecc_map((ecc_point *) c, &e->prime, e->mont_b) != MP_OKAY)
+		ret = -1;
+	else
+		ret = 0;
+end:
+	wc_ecc_del_point(tb);
+	wc_ecc_del_point(ta);
+	mp_clear(&mu);
+	return ret;
+}
+
+
+int crypto_ec_point_mul(struct crypto_ec *e, const struct crypto_ec_point *p,
+			const struct crypto_bignum *b,
+			struct crypto_ec_point *res)
+{
+	int ret;
+
+	if (TEST_FAIL())
+		return -1;
+
+	ret = wc_ecc_mulmod((mp_int *) b, (ecc_point *) p, (ecc_point *) res,
+			    &e->a, &e->prime, 1);
+	return ret == 0 ? 0 : -1;
+}
+
+
+int crypto_ec_point_invert(struct crypto_ec *e, struct crypto_ec_point *p)
+{
+	ecc_point *point = (ecc_point *) p;
+
+	if (TEST_FAIL())
+		return -1;
+
+	if (mp_sub(&e->prime, point->y, point->y) != MP_OKAY)
+		return -1;
+
+	return 0;
+}
+
+
+int crypto_ec_point_solve_y_coord(struct crypto_ec *e,
+				  struct crypto_ec_point *p,
+				  const struct crypto_bignum *x, int y_bit)
+{
+	byte buf[MAX_ECC_BYTES + 1];
+	int ret;
+	int prime_len = crypto_ec_prime_len(e);
+
+	if (TEST_FAIL())
+		return -1;
+
+	buf[0] = 0x2 + (byte) y_bit;
+	ret = crypto_bignum_to_bin(x, buf + 1, prime_len, prime_len);
+	if (ret <= 0)
+		return -1;
+	ret = wc_ecc_import_point_der(buf, ret + 1, e->key.idx,
+				      (ecc_point *) p);
+	if (ret != 0)
+		return -1;
+
+	return 0;
+}
+
+
+struct crypto_bignum *
+crypto_ec_point_compute_y_sqr(struct crypto_ec *e,
+			      const struct crypto_bignum *x)
+{
+	mp_int *y2 = NULL;
+	mp_int t;
+	int calced = 0;
+
+	if (TEST_FAIL())
+		return NULL;
+
+	if (mp_init(&t) != MP_OKAY)
+		return NULL;
+
+	y2 = (mp_int *) crypto_bignum_init();
+	if (!y2)
+		goto done;
+
+	if (mp_sqrmod((mp_int *) x, &e->prime, y2) != 0 ||
+	    mp_mulmod((mp_int *) x, &t, &e->prime, y2) != 0 ||
+	    mp_mulmod((mp_int *) x, &e->a, &e->prime, &t) != 0 ||
+	    mp_addmod(y2, &t, &e->prime, y2) != 0 ||
+	    mp_addmod(y2, &e->b, &e->prime, y2) != 0)
+		goto done;
+
+	calced = 1;
+done:
+	if (!calced) {
+		if (y2) {
+			mp_clear(y2);
+			os_free(y2);
+		}
+		mp_clear(&t);
+	}
+
+	return (struct crypto_bignum *) y2;
+}
+
+
+int crypto_ec_point_is_at_infinity(struct crypto_ec *e,
+				   const struct crypto_ec_point *p)
+{
+	return wc_ecc_point_is_at_infinity((ecc_point *) p);
+}
+
+
+int crypto_ec_point_is_on_curve(struct crypto_ec *e,
+				const struct crypto_ec_point *p)
+{
+	return wc_ecc_is_point((ecc_point *) p, &e->a, &e->b, &e->prime) ==
+		MP_OKAY;
+}
+
+
+int crypto_ec_point_cmp(const struct crypto_ec *e,
+			const struct crypto_ec_point *a,
+			const struct crypto_ec_point *b)
+{
+	return wc_ecc_cmp_point((ecc_point *) a, (ecc_point *) b);
+}
+
+#endif /* CONFIG_ECC */

src/crypto/fips_prf_wolfssl.c

@@ -0,0 +1,86 @@
+/*
+ * FIPS 186-2 PRF for libcrypto
+ * Copyright (c) 2004-2017, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+#include <wolfssl/wolfcrypt/sha.h>
+
+#include "common.h"
+#include "crypto.h"
+
+
+static void sha1_transform(u32 *state, const u8 data[64])
+{
+	Sha sha;
+
+	os_memset(&sha, 0, sizeof(sha));
+	sha.digest[0] = state[0];
+	sha.digest[1] = state[1];
+	sha.digest[2] = state[2];
+	sha.digest[3] = state[3];
+	sha.digest[4] = state[4];
+	wc_ShaUpdate(&sha, data, 64);
+	state[0] = sha.digest[0];
+	state[1] = sha.digest[1];
+	state[2] = sha.digest[2];
+	state[3] = sha.digest[3];
+	state[4] = sha.digest[4];
+}
+
+
+int fips186_2_prf(const u8 *seed, size_t seed_len, u8 *x, size_t xlen)
+{
+	u8 xkey[64];
+	u32 t[5], _t[5];
+	int i, j, m, k;
+	u8 *xpos = x;
+	u32 carry;
+
+	if (seed_len < sizeof(xkey))
+		os_memset(xkey + seed_len, 0, sizeof(xkey) - seed_len);
+	else
+		seed_len = sizeof(xkey);
+
+	/* FIPS 186-2 + change notice 1 */
+
+	os_memcpy(xkey, seed, seed_len);
+	t[0] = 0x67452301;
+	t[1] = 0xEFCDAB89;
+	t[2] = 0x98BADCFE;
+	t[3] = 0x10325476;
+	t[4] = 0xC3D2E1F0;
+
+	m = xlen / 40;
+	for (j = 0; j < m; j++) {
+		/* XSEED_j = 0 */
+		for (i = 0; i < 2; i++) {
+			/* XVAL = (XKEY + XSEED_j) mod 2^b */
+
+			/* w_i = G(t, XVAL) */
+			os_memcpy(_t, t, 20);
+			sha1_transform(_t, xkey);
+			WPA_PUT_BE32(xpos, _t[0]);
+			WPA_PUT_BE32(xpos + 4, _t[1]);
+			WPA_PUT_BE32(xpos + 8, _t[2]);
+			WPA_PUT_BE32(xpos + 12, _t[3]);
+			WPA_PUT_BE32(xpos + 16, _t[4]);
+
+			/* XKEY = (1 + XKEY + w_i) mod 2^b */
+			carry = 1;
+			for (k = 19; k >= 0; k--) {
+				carry += xkey[k] + xpos[k];
+				xkey[k] = carry & 0xff;
+				carry >>= 8;
+			}
+
+			xpos += 20;
+		}
+		/* x_j = w_0|w_1 */
+	}
+
+	return 0;
+}

src/crypto/tls_wolfssl.c

@@ -0,0 +1,2150 @@
+/*
+ * SSL/TLS interface functions for wolfSSL TLS case
+ * Copyright (c) 2004-2017, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "crypto.h"
+#include "tls.h"
+
+#define OPENSSL_EXTRA
+#define HAVE_STUNNEL
+#define HAVE_SECRET_CALLBACK
+#define HAVE_SESSION_TICKET
+#define HAVE_OCSP
+#define HAVE_CERTIFICATE_STATUS_REQUEST
+#define HAVE_CERTIFICATE_STATUS_REQUEST_V2
+#ifndef WOLFSSL_DER_LOAD
+#define WOLFSSL_DER_LOAD
+#endif
+#if 0
+/* Enable if a debug build of wolfSSL is installed. */
+#define DEBUG_WOLFSSL
+#endif
+
+/* wolfSSL includes */
+#include <wolfssl/ssl.h>
+#include <wolfssl/error-ssl.h>
+#include <wolfssl/wolfcrypt/asn.h>
+
+#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
+#define HAVE_AESGCM
+#include <wolfssl/wolfcrypt/aes.h>
+#endif
+
+#if !defined(CONFIG_FIPS) &&                             \
+    (defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) ||   \
+     defined(EAP_SERVER_FAST))
+#define WOLFSSL_NEED_EAP_FAST_PRF
+#endif
+
+#define SECRET_LEN          48
+#define RAN_LEN             32
+#define SESSION_TICKET_LEN  256
+
+static int tls_ref_count = 0;
+
+static int tls_ex_idx_session = 0;
+
+
+/* tls input data for wolfSSL Read Callback */
+struct tls_in_data {
+	const struct wpabuf *in_data;
+	size_t consumed; /* how many bytes have we used already */
+};
+
+/* tls output data for wolfSSL Write Callback */
+struct tls_out_data {
+	struct wpabuf *out_data;
+};
+
+struct tls_context {
+	void (*event_cb)(void *ctx, enum tls_event ev,
+			 union tls_event_data *data);
+	void *cb_ctx;
+	int cert_in_cb;
+	char *ocsp_stapling_response;
+};
+
+static struct tls_context *tls_global = NULL;
+
+/* wolfssl tls_connection */
+struct tls_connection {
+	struct tls_context *context;
+	WOLFSSL *ssl;
+	int read_alerts;
+	int write_alerts;
+	int failed;
+	struct tls_in_data input;
+	struct tls_out_data output;
+	char *subject_match;
+	char *alt_subject_match;
+	char *suffix_match;
+	char *domain_match;
+
+	u8 srv_cert_hash[32];
+
+	unsigned char client_random[RAN_LEN];
+	unsigned char server_random[RAN_LEN];
+	unsigned int flags;
+#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
+	tls_session_ticket_cb session_ticket_cb;
+	void *session_ticket_cb_ctx;
+	byte session_ticket[SESSION_TICKET_LEN];
+#endif
+	unsigned int ca_cert_verify:1;
+	unsigned int cert_probe:1;
+	unsigned int server_cert_only:1;
+	unsigned int success_data:1;
+
+	WOLFSSL_X509 *peer_cert;
+	WOLFSSL_X509 *peer_issuer;
+	WOLFSSL_X509 *peer_issuer_issuer;
+};
+
+
+static struct tls_context * tls_context_new(const struct tls_config *conf)
+{
+	struct tls_context *context = os_zalloc(sizeof(*context));
+
+	if (!context)
+		return NULL;
+
+	if (conf) {
+		context->event_cb = conf->event_cb;
+		context->cb_ctx = conf->cb_ctx;
+		context->cert_in_cb = conf->cert_in_cb;
+	}
+
+	return context;
+}
+
+
+static void wolfssl_reset_in_data(struct tls_in_data *in,
+				  const struct wpabuf *buf)
+{
+	/* old one not owned by us so don't free */
+	in->in_data = buf;
+	in->consumed = 0;
+}
+
+
+static void wolfssl_reset_out_data(struct tls_out_data *out)
+{
+	/* old one not owned by us so don't free */
+	out->out_data = wpabuf_alloc_copy("", 0);
+}
+
+
+/* wolfSSL I/O Receive CallBack */
+static int wolfssl_receive_cb(WOLFSSL *ssl, char *buf, int sz, void *ctx)
+{
+	size_t get = sz;
+	struct tls_in_data *data = ctx;
+
+	if (!data)
+		return -1;
+
+	if (get > (wpabuf_len(data->in_data) - data->consumed))
+		get = wpabuf_len(data->in_data) - data->consumed;
+
+	os_memcpy(buf, wpabuf_head(data->in_data) + data->consumed, get);
+	data->consumed += get;
+
+	if (get == 0)
+		return -2; /* WANT_READ */
+
+	return (int) get;
+}
+
+
+/* wolfSSL I/O Send CallBack */
+static int wolfssl_send_cb(WOLFSSL *ssl, char *buf, int sz, void *ctx)
+{
+	struct wpabuf *tmp;
+	struct tls_out_data *data = ctx;
+
+	if (!data)
+		return -1;
+
+	wpa_printf(MSG_DEBUG, "SSL: adding %d bytes", sz);
+
+	tmp = wpabuf_alloc_copy(buf, sz);
+	if (!tmp)
+		return -1;
+	data->out_data = wpabuf_concat(data->out_data, tmp);
+	if (!data->out_data)
+		return -1;
+
+	return sz;
+}
+
+
+static void remove_session_cb(WOLFSSL_CTX *ctx, WOLFSSL_SESSION *sess)
+{
+	struct wpabuf *buf;
+
+	buf = wolfSSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
+	if (!buf)
+		return;
+	wpa_printf(MSG_DEBUG,
+		   "wolfSSL: Free application session data %p (sess %p)",
+		   buf, sess);
+	wpabuf_free(buf);
+
+	wolfSSL_SESSION_set_ex_data(sess, tls_ex_idx_session, NULL);
+}
+
+
+void * tls_init(const struct tls_config *conf)
+{
+	WOLFSSL_CTX *ssl_ctx;
+	struct tls_context *context;
+	const char *ciphers;
+
+#ifdef DEBUG_WOLFSSL
+	wolfSSL_Debugging_ON();
+#endif /* DEBUG_WOLFSSL */
+
+	context = tls_context_new(conf);
+	if (!context)
+		return NULL;
+
+	if (tls_ref_count == 0) {
+		tls_global = context;
+
+		if (wolfSSL_Init() < 0)
+			return NULL;
+		/* wolfSSL_Debugging_ON(); */
+	}
+
+	tls_ref_count++;
+
+	/* start as client */
+	ssl_ctx = wolfSSL_CTX_new(wolfSSLv23_client_method());
+	if (!ssl_ctx) {
+		tls_ref_count--;
+		if (context != tls_global)
+			os_free(context);
+		if (tls_ref_count == 0) {
+			os_free(tls_global);
+			tls_global = NULL;
+		}
+	}
+	wolfSSL_SetIORecv(ssl_ctx, wolfssl_receive_cb);
+	wolfSSL_SetIOSend(ssl_ctx, wolfssl_send_cb);
+	wolfSSL_CTX_set_ex_data(ssl_ctx, 0, context);
+
+	if (conf->tls_session_lifetime > 0) {
+		wolfSSL_CTX_set_quiet_shutdown(ssl_ctx, 1);
+		wolfSSL_CTX_set_session_cache_mode(ssl_ctx,
+						   SSL_SESS_CACHE_SERVER);
+		wolfSSL_CTX_set_timeout(ssl_ctx, conf->tls_session_lifetime);
+		wolfSSL_CTX_sess_set_remove_cb(ssl_ctx, remove_session_cb);
+	} else {
+		wolfSSL_CTX_set_session_cache_mode(ssl_ctx,
+						   SSL_SESS_CACHE_CLIENT);
+	}
+
+	if (conf && conf->openssl_ciphers)
+		ciphers = conf->openssl_ciphers;
+	else
+		ciphers = "ALL";
+	if (wolfSSL_CTX_set_cipher_list(ssl_ctx, ciphers) != 1) {
+		wpa_printf(MSG_ERROR,
+			   "wolfSSL: Failed to set cipher string '%s'",
+			   ciphers);
+		tls_deinit(ssl_ctx);
+		return NULL;
+	}
+
+	return ssl_ctx;
+}
+
+
+void tls_deinit(void *ssl_ctx)
+{
+	struct tls_context *context = wolfSSL_CTX_get_ex_data(ssl_ctx, 0);
+
+	if (context != tls_global)
+		os_free(context);
+
+	wolfSSL_CTX_free((WOLFSSL_CTX *) ssl_ctx);
+
+	tls_ref_count--;
+	if (tls_ref_count == 0) {
+		wolfSSL_Cleanup();
+		os_free(tls_global);
+		tls_global = NULL;
+	}
+}
+
+
+int tls_get_errors(void *tls_ctx)
+{
+#ifdef DEBUG_WOLFSSL
+#if 0
+	unsigned long err;
+
+	err = wolfSSL_ERR_peek_last_error_line(NULL, NULL);
+	if (err != 0) {
+		wpa_printf(MSG_INFO, "TLS - SSL error: %s",
+			   wolfSSL_ERR_error_string(err, NULL));
+		return 1;
+	}
+#endif
+#endif /* DEBUG_WOLFSSL */
+	return 0;
+}
+
+
+struct tls_connection * tls_connection_init(void *tls_ctx)
+{
+	WOLFSSL_CTX *ssl_ctx = tls_ctx;
+	struct tls_connection *conn;
+
+	wpa_printf(MSG_DEBUG, "SSL: connection init");
+
+	conn = os_zalloc(sizeof(*conn));
+	if (!conn)
+		return NULL;
+	conn->ssl = wolfSSL_new(ssl_ctx);
+	if (!conn->ssl) {
+		os_free(conn);
+		return NULL;
+	}
+
+	wolfSSL_SetIOReadCtx(conn->ssl,  &conn->input);
+	wolfSSL_SetIOWriteCtx(conn->ssl, &conn->output);
+	wolfSSL_set_ex_data(conn->ssl, 0, conn);
+	conn->context = wolfSSL_CTX_get_ex_data(ssl_ctx, 0);
+
+	/* Need randoms post-hanshake for EAP-FAST, export key and deriving
+	 * session ID in EAP methods. */
+	wolfSSL_KeepArrays(conn->ssl);
+	wolfSSL_KeepHandshakeResources(conn->ssl);
+	wolfSSL_UseClientSuites(conn->ssl);
+
+	return conn;
+}
+
+
+void tls_connection_deinit(void *tls_ctx, struct tls_connection *conn)
+{
+	if (!conn)
+		return;
+
+	wpa_printf(MSG_DEBUG, "SSL: connection deinit");
+
+	/* parts */
+	wolfSSL_free(conn->ssl);
+	os_free(conn->subject_match);
+	os_free(conn->alt_subject_match);
+	os_free(conn->suffix_match);
+	os_free(conn->domain_match);
+
+	/* self */
+	os_free(conn);
+}
+
+
+int tls_connection_established(void *tls_ctx, struct tls_connection *conn)
+{
+	return conn ? wolfSSL_is_init_finished(conn->ssl) : 0;
+}
+
+
+int tls_connection_shutdown(void *tls_ctx, struct tls_connection *conn)
+{
+	WOLFSSL_SESSION *session;
+
+	if (!conn)
+		return -1;
+
+	wpa_printf(MSG_DEBUG, "SSL: connection shutdown");
+
+	/* Set quiet as OpenSSL does */
+	wolfSSL_set_quiet_shutdown(conn->ssl, 1);
+	wolfSSL_shutdown(conn->ssl);
+
+	session = wolfSSL_get_session(conn->ssl);
+	if (wolfSSL_clear(conn->ssl) != 1)
+		return -1;
+	wolfSSL_set_session(conn->ssl, session);
+
+	return 0;
+}
+
+
+static int tls_connection_set_subject_match(struct tls_connection *conn,
+					    const char *subject_match,
+					    const char *alt_subject_match,
+					    const char *suffix_match,
+					    const char *domain_match)
+{
+	os_free(conn->subject_match);
+	conn->subject_match = NULL;
+	if (subject_match) {
+		conn->subject_match = os_strdup(subject_match);
+		if (!conn->subject_match)
+			return -1;
+	}
+
+	os_free(conn->alt_subject_match);
+	conn->alt_subject_match = NULL;
+	if (alt_subject_match) {
+		conn->alt_subject_match = os_strdup(alt_subject_match);
+		if (!conn->alt_subject_match)
+			return -1;
+	}
+
+	os_free(conn->suffix_match);
+	conn->suffix_match = NULL;
+	if (suffix_match) {
+		conn->suffix_match = os_strdup(suffix_match);
+		if (!conn->suffix_match)
+			return -1;
+	}
+
+	os_free(conn->domain_match);
+	conn->domain_match = NULL;
+	if (domain_match) {
+		conn->domain_match = os_strdup(domain_match);
+		if (!conn->domain_match)
+			return -1;
+	}
+
+	return 0;
+}
+
+
+static int tls_connection_dh(struct tls_connection *conn, const char *dh_file,
+			     const u8 *dh_blob, size_t blob_len)
+{
+	if (!dh_file && !dh_blob)
+		return 0;
+
+	wolfSSL_set_accept_state(conn->ssl);
+
+	if (dh_blob) {
+		if (wolfSSL_SetTmpDH_buffer(conn->ssl, dh_blob, blob_len,
+					    SSL_FILETYPE_ASN1) < 0) {
+			wpa_printf(MSG_INFO, "SSL: use DH DER blob failed");
+			return -1;
+		}
+		wpa_printf(MSG_DEBUG, "SSL: use DH blob OK");
+		return 0;
+	}
+
+	if (dh_file) {
+		wpa_printf(MSG_INFO, "SSL: use DH PEM file: %s", dh_file);
+		if (wolfSSL_SetTmpDH_file(conn->ssl, dh_file,
+					  SSL_FILETYPE_PEM) < 0) {
+			wpa_printf(MSG_INFO, "SSL: use DH PEM file failed");
+			if (wolfSSL_SetTmpDH_file(conn->ssl, dh_file,
+						  SSL_FILETYPE_ASN1) < 0) {
+				wpa_printf(MSG_INFO,
+					   "SSL: use DH DER file failed");
+				return -1;
+			}
+		}
+		wpa_printf(MSG_DEBUG, "SSL: use DH file OK");
+		return 0;
+	}
+
+	return 0;
+}
+
+
+static int tls_connection_client_cert(struct tls_connection *conn,
+				      const char *client_cert,
+				      const u8 *client_cert_blob,
+				      size_t blob_len)
+{
+	if (!client_cert && !client_cert_blob)
+		return 0;
+
+	if (client_cert_blob) {
+		if (wolfSSL_use_certificate_buffer(conn->ssl, client_cert_blob,
+						   blob_len,
+						   SSL_FILETYPE_ASN1) < 0) {
+			wpa_printf(MSG_INFO,
+				   "SSL: use client cert DER blob failed");
+			return -1;
+		}
+		wpa_printf(MSG_DEBUG, "SSL: use client cert blob OK");
+		return 0;
+	}
+
+	if (client_cert) {
+		if (wolfSSL_use_certificate_file(conn->ssl, client_cert,
+						 SSL_FILETYPE_PEM) < 0) {
+			wpa_printf(MSG_INFO,
+				   "SSL: use client cert PEM file failed");
+			if (wolfSSL_use_certificate_file(
+				    conn->ssl, client_cert,
+				    SSL_FILETYPE_ASN1) < 0) {
+				wpa_printf(MSG_INFO,
+					   "SSL: use client cert DER file failed");
+				return -1;
+			}
+		}
+		wpa_printf(MSG_DEBUG, "SSL: use client cert file OK");
+		return 0;
+	}
+
+	return 0;
+}
+
+
+static int tls_passwd_cb(char *buf, int size, int rwflag, void *password)
+{
+	if (!password)
+		return 0;
+	os_strlcpy(buf, (char *) password, size);
+	return os_strlen(buf);
+}
+
+
+static int tls_connection_private_key(void *tls_ctx,
+				      struct tls_connection *conn,
+				      const char *private_key,
+				      const char *private_key_passwd,
+				      const u8 *private_key_blob,
+				      size_t blob_len)
+{
+	WOLFSSL_CTX *ctx = tls_ctx;
+	char *passwd = NULL;
+	int ok = 0;
+
+	if (!private_key && !private_key_blob)
+		return 0;
+
+	if (private_key_passwd) {
+		passwd = os_strdup(private_key_passwd);
+		if (!passwd)
+			return -1;
+	}
+
+	wolfSSL_CTX_set_default_passwd_cb(ctx, tls_passwd_cb);
+	wolfSSL_CTX_set_default_passwd_cb_userdata(ctx, passwd);
+
+	if (private_key_blob) {
+		if (wolfSSL_use_PrivateKey_buffer(conn->ssl,
+						  private_key_blob, blob_len,
+						  SSL_FILETYPE_ASN1) < 0) {
+			wpa_printf(MSG_INFO,
+				   "SSL: use private DER blob failed");
+		} else {
+			wpa_printf(MSG_DEBUG, "SSL: use private key blob OK");
+			ok = 1;
+		}
+	}
+
+	if (!ok && private_key) {
+		if (wolfSSL_use_PrivateKey_file(conn->ssl, private_key,
+						SSL_FILETYPE_PEM) < 0) {
+			wpa_printf(MSG_INFO,
+				   "SSL: use private key PEM file failed");
+			if (wolfSSL_use_PrivateKey_file(conn->ssl, private_key,
+							SSL_FILETYPE_ASN1) < 0)
+			{
+				wpa_printf(MSG_INFO,
+					   "SSL: use private key DER file failed");
+			} else {
+				ok = 1;
+			}
+		} else {
+			ok = 1;
+		}
+
+		if (ok)
+			wpa_printf(MSG_DEBUG, "SSL: use private key file OK");
+	}
+
+	wolfSSL_CTX_set_default_passwd_cb(ctx, NULL);
+	os_free(passwd);
+
+	if (!ok)
+		return -1;
+
+	return 0;
+}
+
+
+#define GEN_EMAIL	1
+#define GEN_DNS		ALT_NAMES_OID
+#define GEN_URI		6
+
+static int tls_match_alt_subject_component(WOLFSSL_X509 *cert, int type,
+					   const char *value, size_t len)
+{
+	WOLFSSL_ASN1_OBJECT *gen;
+	void *ext;
+	int found = 0;
+	int i;
+
+	ext = wolfSSL_X509_get_ext_d2i(cert, ALT_NAMES_OID, NULL, NULL);
+
+	for (i = 0; ext && i < wolfSSL_sk_num(ext); i++) {
+		gen = wolfSSL_sk_value(ext, i);
+		if (gen->type != type)
+			continue;
+		if (os_strlen((char *) gen->obj) == len &&
+		    os_memcmp(value, gen->obj, len) == 0)
+			found++;
+	}
+
+	wolfSSL_sk_ASN1_OBJECT_free(ext);
+
+	return found;
+}
+
+
+static int tls_match_alt_subject(WOLFSSL_X509 *cert, const char *match)
+{
+	int type;
+	const char *pos, *end;
+	size_t len;
+
+	pos = match;
+	do {
+		if (os_strncmp(pos, "EMAIL:", 6) == 0) {
+			type = GEN_EMAIL;
+			pos += 6;
+		} else if (os_strncmp(pos, "DNS:", 4) == 0) {
+			type = GEN_DNS;
+			pos += 4;
+		} else if (os_strncmp(pos, "URI:", 4) == 0) {
+			type = GEN_URI;
+			pos += 4;
+		} else {
+			wpa_printf(MSG_INFO,
+				   "TLS: Invalid altSubjectName match '%s'",
+				   pos);
+			return 0;
+		}
+		end = os_strchr(pos, ';');
+		while (end) {
+			if (os_strncmp(end + 1, "EMAIL:", 6) == 0 ||
+			    os_strncmp(end + 1, "DNS:", 4) == 0 ||
+			    os_strncmp(end + 1, "URI:", 4) == 0)
+				break;
+			end = os_strchr(end + 1, ';');
+		}
+		if (end)
+			len = end - pos;
+		else
+			len = os_strlen(pos);
+		if (tls_match_alt_subject_component(cert, type, pos, len) > 0)
+			return 1;
+		pos = end + 1;
+	} while (end);
+
+	return 0;
+}
+
+
+static int domain_suffix_match(const char *val, size_t len, const char *match,
+			       int full)
+{
+	size_t i, match_len;
+
+	/* Check for embedded nuls that could mess up suffix matching */
+	for (i = 0; i < len; i++) {
+		if (val[i] == '\0') {
+			wpa_printf(MSG_DEBUG,
+				   "TLS: Embedded null in a string - reject");
+			return 0;
+		}
+	}
+
+	match_len = os_strlen(match);
+	if (match_len > len || (full && match_len != len))
+		return 0;
+
+	if (os_strncasecmp(val + len - match_len, match, match_len) != 0)
+		return 0; /* no match */
+
+	if (match_len == len)
+		return 1; /* exact match */
+
+	if (val[len - match_len - 1] == '.')
+		return 1; /* full label match completes suffix match */
+
+	wpa_printf(MSG_DEBUG, "TLS: Reject due to incomplete label match");
+	return 0;
+}
+
+
+static int tls_match_suffix(WOLFSSL_X509 *cert, const char *match, int full)
+{
+	WOLFSSL_ASN1_OBJECT *gen;
+	void *ext;
+	int i;
+	int j;
+	int dns_name = 0;
+	WOLFSSL_X509_NAME *name;
+
+	wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s",
+		   full ? "" : "suffix ", match);
+
+	ext = wolfSSL_X509_get_ext_d2i(cert, ALT_NAMES_OID, NULL, NULL);
+
+	for (j = 0; ext && j < wolfSSL_sk_num(ext); j++) {
+		gen = wolfSSL_sk_value(ext, j);
+		if (gen->type != ALT_NAMES_OID)
+			continue;
+		dns_name++;
+		wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate dNSName",
+				  gen->obj, os_strlen((char *)gen->obj));
+		if (domain_suffix_match((const char *) gen->obj,
+					os_strlen((char *) gen->obj), match,
+					full) == 1) {
+			wpa_printf(MSG_DEBUG, "TLS: %s in dNSName found",
+				   full ? "Match" : "Suffix match");
+			wolfSSL_sk_ASN1_OBJECT_free(ext);
+			return 1;
+		}
+	}
+	wolfSSL_sk_ASN1_OBJECT_free(ext);
+
+	if (dns_name) {
+		wpa_printf(MSG_DEBUG, "TLS: None of the dNSName(s) matched");
+		return 0;
+	}
+
+	name = wolfSSL_X509_get_subject_name(cert);
+	i = -1;
+	for (;;) {
+		WOLFSSL_X509_NAME_ENTRY *e;
+		WOLFSSL_ASN1_STRING *cn;
+
+		i = wolfSSL_X509_NAME_get_index_by_NID(name, ASN_COMMON_NAME,
+						       i);
+		if (i == -1)
+			break;
+		e = wolfSSL_X509_NAME_get_entry(name, i);
+		if (!e)
+			continue;
+		cn = wolfSSL_X509_NAME_ENTRY_get_data(e);
+		if (!cn)
+			continue;
+		wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate commonName",
+				  cn->data, cn->length);
+		if (domain_suffix_match(cn->data, cn->length, match, full) == 1)
+		{
+			wpa_printf(MSG_DEBUG, "TLS: %s in commonName found",
+				   full ? "Match" : "Suffix match");
+			return 1;
+		}
+	}
+
+	wpa_printf(MSG_DEBUG, "TLS: No CommonName %smatch found",
+		   full ? "" : "suffix ");
+	return 0;
+}
+
+
+static enum tls_fail_reason wolfssl_tls_fail_reason(int err)
+{
+	switch (err) {
+	case X509_V_ERR_CERT_REVOKED:
+		return TLS_FAIL_REVOKED;
+	case ASN_BEFORE_DATE_E:
+	case X509_V_ERR_CERT_NOT_YET_VALID:
+	case X509_V_ERR_CRL_NOT_YET_VALID:
+		return TLS_FAIL_NOT_YET_VALID;
+	case ASN_AFTER_DATE_E:
+	case X509_V_ERR_CERT_HAS_EXPIRED:
+	case X509_V_ERR_CRL_HAS_EXPIRED:
+		return TLS_FAIL_EXPIRED;
+	case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
+	case X509_V_ERR_UNABLE_TO_GET_CRL:
+	case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
+	case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
+	case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
+	case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
+	case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
+	case X509_V_ERR_CERT_CHAIN_TOO_LONG:
+	case X509_V_ERR_PATH_LENGTH_EXCEEDED:
+	case X509_V_ERR_INVALID_CA:
+		return TLS_FAIL_UNTRUSTED;
+	case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
+	case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
+	case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
+	case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
+	case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
+	case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
+	case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
+	case X509_V_ERR_CERT_UNTRUSTED:
+	case X509_V_ERR_CERT_REJECTED:
+		return TLS_FAIL_BAD_CERTIFICATE;
+	default:
+		return TLS_FAIL_UNSPECIFIED;
+	}
+}
+
+
+static const char * wolfssl_tls_err_string(int err, const char *err_str)
+{
+	switch (err) {
+	case ASN_BEFORE_DATE_E:
+		return "certificate is not yet valid";
+	case ASN_AFTER_DATE_E:
+		return "certificate has expired";
+	default:
+		return err_str;
+	}
+}
+
+
+static struct wpabuf * get_x509_cert(WOLFSSL_X509 *cert)
+{
+	struct wpabuf *buf = NULL;
+	const u8 *data;
+	int cert_len;
+
+	data = wolfSSL_X509_get_der(cert, &cert_len);
+	if (!data)
+		buf = wpabuf_alloc_copy(data, cert_len);
+
+	return buf;
+}
+
+
+static void wolfssl_tls_fail_event(struct tls_connection *conn,
+				   WOLFSSL_X509 *err_cert, int err, int depth,
+				   const char *subject, const char *err_str,
+				   enum tls_fail_reason reason)
+{
+	union tls_event_data ev;
+	struct wpabuf *cert = NULL;
+	struct tls_context *context = conn->context;
+
+	if (!context->event_cb)
+		return;
+
+	cert = get_x509_cert(err_cert);
+	os_memset(&ev, 0, sizeof(ev));
+	ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ?
+		reason : wolfssl_tls_fail_reason(err);
+	ev.cert_fail.depth = depth;
+	ev.cert_fail.subject = subject;
+	ev.cert_fail.reason_txt = wolfssl_tls_err_string(err, err_str);
+	ev.cert_fail.cert = cert;
+	context->event_cb(context->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev);
+	wpabuf_free(cert);
+}
+
+
+static void wolfssl_tls_cert_event(struct tls_connection *conn,
+				   WOLFSSL_X509 *err_cert, int depth,
+				   const char *subject)
+{
+	struct wpabuf *cert = NULL;
+	union tls_event_data ev;
+	struct tls_context *context = conn->context;
+	char *alt_subject[TLS_MAX_ALT_SUBJECT];
+	int alt, num_alt_subject = 0;
+	WOLFSSL_ASN1_OBJECT *gen;
+	void *ext;
+	int i;
+#ifdef CONFIG_SHA256
+	u8 hash[32];
+#endif /* CONFIG_SHA256 */
+
+	if (!context->event_cb)
+		return;
+
+	os_memset(&ev, 0, sizeof(ev));
+	if (conn->cert_probe || (conn->flags & TLS_CONN_EXT_CERT_CHECK) ||
+	    context->cert_in_cb) {
+		cert = get_x509_cert(err_cert);
+		ev.peer_cert.cert = cert;
+	}
+
+#ifdef CONFIG_SHA256
+	if (cert) {
+		const u8 *addr[1];
+		size_t len[1];
+
+		addr[0] = wpabuf_head(cert);
+		len[0] = wpabuf_len(cert);
+		if (sha256_vector(1, addr, len, hash) == 0) {
+			ev.peer_cert.hash = hash;
+			ev.peer_cert.hash_len = sizeof(hash);
+		}
+	}
+#endif /* CONFIG_SHA256 */
+
+	ev.peer_cert.depth = depth;
+	ev.peer_cert.subject = subject;
+
+	ext = wolfSSL_X509_get_ext_d2i(err_cert, ALT_NAMES_OID, NULL, NULL);
+	for (i = 0; ext && i < wolfSSL_sk_num(ext); i++) {
+		char *pos;
+
+		if (num_alt_subject == TLS_MAX_ALT_SUBJECT)
+			break;
+		gen = wolfSSL_sk_value((void *) ext, i);
+#if 0
+		if (gen->type != GEN_EMAIL &&
+		    gen->type != GEN_DNS &&
+		    gen->type != GEN_URI)
+			continue;
+#endif
+
+		pos = os_malloc(10 + os_strlen((char *) gen->obj) + 1);
+		if (!pos)
+			break;
+		alt_subject[num_alt_subject++] = pos;
+
+#if 0
+		switch (gen->type) {
+		case GEN_EMAIL:
+			os_memcpy(pos, "EMAIL:", 6);
+			pos += 6;
+			break;
+		case GEN_DNS:
+			os_memcpy(pos, "DNS:", 4);
+			pos += 4;
+			break;
+		case GEN_URI:
+			os_memcpy(pos, "URI:", 4);
+			pos += 4;
+			break;
+		}
+#else
+		os_memcpy(pos, "DNS:", 4);
+		pos += 4;
+#endif
+
+		os_memcpy(pos, gen->obj, os_strlen((char *)gen->obj));
+		pos += os_strlen((char *)gen->obj);
+		*pos = '\0';
+	}
+	wolfSSL_sk_ASN1_OBJECT_free(ext);
+
+	for (alt = 0; alt < num_alt_subject; alt++)
+		ev.peer_cert.altsubject[alt] = alt_subject[alt];
+	ev.peer_cert.num_altsubject = num_alt_subject;
+
+	context->event_cb(context->cb_ctx, TLS_PEER_CERTIFICATE, &ev);
+	wpabuf_free(cert);
+	for (alt = 0; alt < num_alt_subject; alt++)
+		os_free(alt_subject[alt]);
+}
+
+
+static int tls_verify_cb(int preverify_ok, WOLFSSL_X509_STORE_CTX *x509_ctx)
+{
+	char buf[256];
+	WOLFSSL_X509 *err_cert;
+	int err, depth;
+	WOLFSSL *ssl;
+	struct tls_connection *conn;
+	struct tls_context *context;
+	char *match, *altmatch, *suffix_match, *domain_match;
+	const char *err_str;
+
+	err_cert = wolfSSL_X509_STORE_CTX_get_current_cert(x509_ctx);
+	if (!err_cert) {
+		wpa_printf(MSG_DEBUG, "wolfSSL: No Cert");
+		return 0;
+	}
+
+	err = wolfSSL_X509_STORE_CTX_get_error(x509_ctx);
+	depth = wolfSSL_X509_STORE_CTX_get_error_depth(x509_ctx);
+	ssl = wolfSSL_X509_STORE_CTX_get_ex_data(
+		x509_ctx, wolfSSL_get_ex_data_X509_STORE_CTX_idx());
+	wolfSSL_X509_NAME_oneline(wolfSSL_X509_get_subject_name(err_cert), buf,
+				  sizeof(buf));
+
+	conn = wolfSSL_get_ex_data(ssl, 0);
+	if (!conn) {
+		wpa_printf(MSG_DEBUG, "wolfSSL: No ex_data");
+		return 0;
+	}
+
+	if (depth == 0)
+		conn->peer_cert = err_cert;
+	else if (depth == 1)
+		conn->peer_issuer = err_cert;
+	else if (depth == 2)
+		conn->peer_issuer_issuer = err_cert;
+
+	context = conn->context;
+	match = conn->subject_match;
+	altmatch = conn->alt_subject_match;
+	suffix_match = conn->suffix_match;
+	domain_match = conn->domain_match;
+
+	if (!preverify_ok && !conn->ca_cert_verify)
+		preverify_ok = 1;
+	if (!preverify_ok && depth > 0 && conn->server_cert_only)
+		preverify_ok = 1;
+	if (!preverify_ok && (conn->flags & TLS_CONN_DISABLE_TIME_CHECKS) &&
+	    (err == X509_V_ERR_CERT_HAS_EXPIRED ||
+	     err == ASN_AFTER_DATE_E || err == ASN_BEFORE_DATE_E ||
+	     err == X509_V_ERR_CERT_NOT_YET_VALID)) {
+		wpa_printf(MSG_DEBUG,
+			   "wolfSSL: Ignore certificate validity time mismatch");
+		preverify_ok = 1;
+	}
+
+	err_str = wolfSSL_X509_verify_cert_error_string(err);
+
+#ifdef CONFIG_SHA256
+	/*
+	 * Do not require preverify_ok so we can explicity allow otherwise
+	 * invalid pinned server certificates.
+	 */
+	if (depth == 0 && conn->server_cert_only) {
+		struct wpabuf *cert;
+
+		cert = get_x509_cert(err_cert);
+		if (!cert) {
+			wpa_printf(MSG_DEBUG,
+				   "wolfSSL: Could not fetch server certificate data");
+			preverify_ok = 0;
+		} else {
+			u8 hash[32];
+			const u8 *addr[1];
+			size_t len[1];
+
+			addr[0] = wpabuf_head(cert);
+			len[0] = wpabuf_len(cert);
+			if (sha256_vector(1, addr, len, hash) < 0 ||
+			    os_memcmp(conn->srv_cert_hash, hash, 32) != 0) {
+				err_str = "Server certificate mismatch";
+				err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
+				preverify_ok = 0;
+			} else if (!preverify_ok) {
+				/*
+				 * Certificate matches pinned certificate, allow
+				 * regardless of other problems.
+				 */
+				wpa_printf(MSG_DEBUG,
+					   "wolfSSL: Ignore validation issues for a pinned server certificate");
+				preverify_ok = 1;
+			}
+			wpabuf_free(cert);
+		}
+	}
+#endif /* CONFIG_SHA256 */
+
+	if (!preverify_ok) {
+		wpa_printf(MSG_WARNING,
+			   "TLS: Certificate verification failed, error %d (%s) depth %d for '%s'",
+			   err, err_str, depth, buf);
+		wolfssl_tls_fail_event(conn, err_cert, err, depth, buf,
+				       err_str, TLS_FAIL_UNSPECIFIED);
+		return preverify_ok;
+	}
+
+	wpa_printf(MSG_DEBUG,
+		   "TLS: %s - preverify_ok=%d err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'",
+		   __func__, preverify_ok, err, err_str,
+		   conn->ca_cert_verify, depth, buf);
+	if (depth == 0 && match && os_strstr(buf, match) == NULL) {
+		wpa_printf(MSG_WARNING,
+			   "TLS: Subject '%s' did not match with '%s'",
+			   buf, match);
+		preverify_ok = 0;
+		wolfssl_tls_fail_event(conn, err_cert, err, depth, buf,
+				       "Subject mismatch",
+				       TLS_FAIL_SUBJECT_MISMATCH);
+	} else if (depth == 0 && altmatch &&
+		   !tls_match_alt_subject(err_cert, altmatch)) {
+		wpa_printf(MSG_WARNING,
+			   "TLS: altSubjectName match '%s' not found",
+			   altmatch);
+		preverify_ok = 0;
+		wolfssl_tls_fail_event(conn, err_cert, err, depth, buf,
+				       "AltSubject mismatch",
+				       TLS_FAIL_ALTSUBJECT_MISMATCH);
+	} else if (depth == 0 && suffix_match &&
+		   !tls_match_suffix(err_cert, suffix_match, 0)) {
+		wpa_printf(MSG_WARNING,
+			   "TLS: Domain suffix match '%s' not found",
+			   suffix_match);
+		preverify_ok = 0;
+		wolfssl_tls_fail_event(conn, err_cert, err, depth, buf,
+				       "Domain suffix mismatch",
+				       TLS_FAIL_DOMAIN_SUFFIX_MISMATCH);
+	} else if (depth == 0 && domain_match &&
+		   !tls_match_suffix(err_cert, domain_match, 1)) {
+		wpa_printf(MSG_WARNING, "TLS: Domain match '%s' not found",
+			   domain_match);
+		preverify_ok = 0;
+		wolfssl_tls_fail_event(conn, err_cert, err, depth, buf,
+				       "Domain mismatch",
+				       TLS_FAIL_DOMAIN_MISMATCH);
+	} else {
+		wolfssl_tls_cert_event(conn, err_cert, depth, buf);
+	}
+
+	if (conn->cert_probe && preverify_ok && depth == 0) {
+		wpa_printf(MSG_DEBUG,
+			   "wolfSSL: Reject server certificate on probe-only run");
+		preverify_ok = 0;
+		wolfssl_tls_fail_event(conn, err_cert, err, depth, buf,
+				       "Server certificate chain probe",
+				       TLS_FAIL_SERVER_CHAIN_PROBE);
+	}
+
+#ifdef HAVE_OCSP_OPENSSL
+	if (depth == 0 && (conn->flags & TLS_CONN_REQUEST_OCSP) &&
+	    preverify_ok) {
+		enum ocsp_result res;
+
+		res = check_ocsp_resp(conn->ssl_ctx, conn->ssl, err_cert,
+				      conn->peer_issuer,
+				      conn->peer_issuer_issuer);
+		if (res == OCSP_REVOKED) {
+			preverify_ok = 0;
+			wolfssl_tls_fail_event(conn, err_cert, err, depth, buf,
+					       "certificate revoked",
+					       TLS_FAIL_REVOKED);
+			if (err == X509_V_OK)
+				X509_STORE_CTX_set_error(
+					x509_ctx, X509_V_ERR_CERT_REVOKED);
+		} else if (res != OCSP_GOOD &&
+			   (conn->flags & TLS_CONN_REQUIRE_OCSP)) {
+			preverify_ok = 0;
+			wolfssl_tls_fail_event(conn, err_cert, err, depth, buf,
+					       "bad certificate status response",
+					       TLS_FAIL_UNSPECIFIED);
+		}
+	}
+#endif /* HAVE_OCSP */
+	if (depth == 0 && preverify_ok && context->event_cb != NULL)
+		context->event_cb(context->cb_ctx,
+				  TLS_CERT_CHAIN_SUCCESS, NULL);
+
+	return preverify_ok;
+}
+
+
+static int tls_connection_ca_cert(void *tls_ctx, struct tls_connection *conn,
+				  const char *ca_cert,
+				  const u8 *ca_cert_blob, size_t blob_len,
+				  const char *ca_path)
+{
+	WOLFSSL_CTX *ctx = tls_ctx;
+
+	wolfSSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
+	conn->ca_cert_verify = 1;
+
+	if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) {
+		wpa_printf(MSG_DEBUG,
+			   "wolfSSL: Probe for server certificate chain");
+		conn->cert_probe = 1;
+		conn->ca_cert_verify = 0;
+		return 0;
+	}
+
+	if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) {
+#ifdef CONFIG_SHA256
+		const char *pos = ca_cert + 7;
+
+		if (os_strncmp(pos, "server/sha256/", 14) != 0) {
+			wpa_printf(MSG_DEBUG,
+				   "wolfSSL: Unsupported ca_cert hash value '%s'",
+				   ca_cert);
+			return -1;
+		}
+		pos += 14;
+		if (os_strlen(pos) != 32 * 2) {
+			wpa_printf(MSG_DEBUG,
+				   "wolfSSL: Unexpected SHA256 hash length in ca_cert '%s'",
+				   ca_cert);
+			return -1;
+		}
+		if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) {
+			wpa_printf(MSG_DEBUG,
+				   "wolfSSL: Invalid SHA256 hash value in ca_cert '%s'",
+				   ca_cert);
+			return -1;
+		}
+		conn->server_cert_only = 1;
+		wpa_printf(MSG_DEBUG,
+			   "wolfSSL: Checking only server certificate match");
+		return 0;
+#else /* CONFIG_SHA256 */
+		wpa_printf(MSG_INFO,
+			   "No SHA256 included in the build - cannot validate server certificate hash");
+		return -1;
+#endif /* CONFIG_SHA256 */
+	}
+
+	if (ca_cert_blob) {
+		if (wolfSSL_CTX_load_verify_buffer(ctx, ca_cert_blob, blob_len,
+						   SSL_FILETYPE_ASN1) !=
+		    SSL_SUCCESS) {
+			wpa_printf(MSG_INFO, "SSL: failed to load CA blob");
+			return -1;
+		}
+		wpa_printf(MSG_DEBUG, "SSL: use CA cert blob OK");
+		return 0;
+	}
+
+	if (ca_cert || ca_path) {
+		WOLFSSL_X509_STORE *cm = wolfSSL_X509_STORE_new();
+
+		if (!cm) {
+			wpa_printf(MSG_INFO,
+				   "SSL: failed to create certificate store");
+			return -1;
+		}
+		wolfSSL_CTX_set_cert_store(ctx, cm);
+		XFREE(cm, NULL, DYNAMIC_TYPE_X509_STORE);
+
+		if (wolfSSL_CTX_load_verify_locations(ctx, ca_cert, ca_path) !=
+		    SSL_SUCCESS) {
+			wpa_printf(MSG_INFO,
+				   "SSL: failed to load ca_cert as PEM");
+
+			if (!ca_cert)
+				return -1;
+
+			if (wolfSSL_CTX_der_load_verify_locations(
+				    ctx, ca_cert, SSL_FILETYPE_ASN1) !=
+			    SSL_SUCCESS) {
+				wpa_printf(MSG_INFO,
+					   "SSL: failed to load ca_cert as DER");
+				return -1;
+			}
+		}
+		return 0;
+	}
+
+	conn->ca_cert_verify = 0;
+	return 0;
+}
+
+
+static void tls_set_conn_flags(WOLFSSL *ssl, unsigned int flags)
+{
+#ifdef HAVE_SESSION_TICKET
+#if 0
+	if (!(flags & TLS_CONN_DISABLE_SESSION_TICKET))
+		wolfSSL_UseSessionTicket(ssl);
+#endif
+#endif /* HAVE_SESSION_TICKET */
+
+	if (flags & TLS_CONN_DISABLE_TLSv1_0)
+		wolfSSL_set_options(ssl, SSL_OP_NO_TLSv1);
+	if (flags & TLS_CONN_DISABLE_TLSv1_1)
+		wolfSSL_set_options(ssl, SSL_OP_NO_TLSv1_1);
+	if (flags & TLS_CONN_DISABLE_TLSv1_2)
+		wolfSSL_set_options(ssl, SSL_OP_NO_TLSv1_2);
+}
+
+
+int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
+			      const struct tls_connection_params *params)
+{
+	wpa_printf(MSG_DEBUG, "SSL: set params");
+
+	if (tls_connection_set_subject_match(conn, params->subject_match,
+					     params->altsubject_match,
+					     params->suffix_match,
+					     params->domain_match) < 0) {
+		wpa_printf(MSG_INFO, "Error setting subject match");
+		return -1;
+	}
+
+	if (tls_connection_ca_cert(tls_ctx, conn, params->ca_cert,
+				   params->ca_cert_blob,
+				   params->ca_cert_blob_len,
+				   params->ca_path) < 0) {
+		wpa_printf(MSG_INFO, "Error setting CA cert");
+		return -1;
+	}
+
+	if (tls_connection_client_cert(conn, params->client_cert,
+				       params->client_cert_blob,
+				       params->client_cert_blob_len) < 0) {
+		wpa_printf(MSG_INFO, "Error setting client cert");
+		return -1;
+	}
+
+	if (tls_connection_private_key(tls_ctx, conn, params->private_key,
+				       params->private_key_passwd,
+				       params->private_key_blob,
+				       params->private_key_blob_len) < 0) {
+		wpa_printf(MSG_INFO, "Error setting private key");
+		return -1;
+	}
+
+	if (tls_connection_dh(conn, params->dh_file, params->dh_blob,
+			      params->dh_blob_len) < 0) {
+		wpa_printf(MSG_INFO, "Error setting DH");
+		return -1;
+	}
+
+	if (params->openssl_ciphers &&
+	    wolfSSL_set_cipher_list(conn->ssl, params->openssl_ciphers) != 1) {
+		wpa_printf(MSG_INFO,
+			   "wolfSSL: Failed to set cipher string '%s'",
+			   params->openssl_ciphers);
+		return -1;
+	}
+
+	tls_set_conn_flags(conn->ssl, params->flags);
+
+#ifdef HAVE_CERTIFICATE_STATUS_REQUEST
+	if (params->flags & TLS_CONN_REQUEST_OCSP) {
+		if (wolfSSL_UseOCSPStapling(conn->ssl, WOLFSSL_CSR_OCSP,
+					    WOLFSSL_CSR_OCSP_USE_NONCE) !=
+		    SSL_SUCCESS)
+			return -1;
+		wolfSSL_CTX_EnableOCSP(tls_ctx, 0);
+	}
+#endif /* HAVE_CERTIFICATE_STATUS_REQUEST */
+#ifdef HAVE_CERTIFICATE_STATUS_REQUEST_V2
+	if (params->flags & TLS_CONN_REQUEST_OCSP) {
+		if (wolfSSL_UseOCSPStaplingV2(conn->ssl,
+					      WOLFSSL_CSR2_OCSP_MULTI, 0) !=
+		    SSL_SUCCESS)
+			return -1;
+		wolfSSL_CTX_EnableOCSP(tls_ctx, 0);
+	}
+#endif /* HAVE_CERTIFICATE_STATUS_REQUEST_V2 */
+#if !defined(HAVE_CERTIFICATE_STATUS_REQUEST) && \
+    !defined(HAVE_CERTIFICATE_STATUS_REQUEST_V2)
+#ifdef HAVE_OCSP
+	if (params->flags & TLS_CONN_REQUEST_OCSP)
+		wolfSSL_CTX_EnableOCSP(ctx, 0);
+#else /* HAVE_OCSP */
+	if (params->flags & TLS_CONN_REQUIRE_OCSP) {
+		wpa_printf(MSG_INFO,
+			   "wolfSSL: No OCSP support included - reject configuration");
+		return -1;
+	}
+	if (params->flags & TLS_CONN_REQUEST_OCSP) {
+		wpa_printf(MSG_DEBUG,
+			   "wolfSSL: No OCSP support included - allow optional OCSP case to continue");
+	}
+#endif /* HAVE_OCSP */
+#endif /* !HAVE_CERTIFICATE_STATUS_REQUEST &&
+	* !HAVE_CERTIFICATE_STATUS_REQUEST_V2 */
+
+	conn->flags = params->flags;
+
+	return 0;
+}
+
+
+static int tls_global_ca_cert(void *ssl_ctx, const char *ca_cert)
+{
+	WOLFSSL_CTX *ctx = ssl_ctx;
+
+	if (ca_cert) {
+		if (wolfSSL_CTX_load_verify_locations(ctx, ca_cert, NULL) != 1)
+		{
+			wpa_printf(MSG_WARNING,
+				   "Failed to load root certificates");
+			return -1;
+		}
+
+		wpa_printf(MSG_DEBUG,
+			   "TLS: Trusted root certificate(s) loaded");
+	}
+
+	return 0;
+}
+
+
+static int tls_global_client_cert(void *ssl_ctx, const char *client_cert)
+{
+	WOLFSSL_CTX *ctx = ssl_ctx;
+
+	if (!client_cert)
+		return 0;
+
+	if (wolfSSL_CTX_use_certificate_file(ctx, client_cert,
+					     SSL_FILETYPE_ASN1) !=
+	    SSL_SUCCESS &&
+	    wolfSSL_CTX_use_certificate_file(ctx, client_cert,
+					     SSL_FILETYPE_PEM) != SSL_SUCCESS) {
+		wpa_printf(MSG_INFO, "Failed to load client certificate");
+		return -1;
+	}
+
+	wpa_printf(MSG_DEBUG, "SSL: Loaded global client certificate: %s",
+		   client_cert);
+
+	return 0;
+}
+
+
+static int tls_global_private_key(void *ssl_ctx, const char *private_key,
+				  const char *private_key_passwd)
+{
+	WOLFSSL_CTX *ctx = ssl_ctx;
+	char *passwd = NULL;
+	int ret = 0;
+
+	if (!private_key)
+		return 0;
+
+	if (private_key_passwd) {
+		passwd = os_strdup(private_key_passwd);
+		if (!passwd)
+			return -1;
+	}
+
+	wolfSSL_CTX_set_default_passwd_cb(ctx, tls_passwd_cb);
+	wolfSSL_CTX_set_default_passwd_cb_userdata(ctx, passwd);
+
+	if (wolfSSL_CTX_use_PrivateKey_file(ctx, private_key,
+					    SSL_FILETYPE_ASN1) != 1 &&
+	    wolfSSL_CTX_use_PrivateKey_file(ctx, private_key,
+					    SSL_FILETYPE_PEM) != 1) {
+		wpa_printf(MSG_INFO, "Failed to load private key");
+		ret = -1;
+	}
+
+	wpa_printf(MSG_DEBUG, "SSL: Loaded global private key");
+
+	os_free(passwd);
+	wolfSSL_CTX_set_default_passwd_cb(ctx, NULL);
+
+	return ret;
+}
+
+
+static int tls_global_dh(void *ssl_ctx, const char *dh_file,
+			 const u8 *dh_blob, size_t blob_len)
+{
+	WOLFSSL_CTX *ctx = ssl_ctx;
+
+	if (!dh_file && !dh_blob)
+		return 0;
+
+	if (dh_blob) {
+		if (wolfSSL_CTX_SetTmpDH_buffer(ctx, dh_blob, blob_len,
+						SSL_FILETYPE_ASN1) < 0) {
+			wpa_printf(MSG_INFO,
+				   "SSL: global use DH DER blob failed");
+			return -1;
+		}
+		wpa_printf(MSG_DEBUG, "SSL: global use DH blob OK");
+		return 0;
+	}
+
+	if (dh_file) {
+		if (wolfSSL_CTX_SetTmpDH_file(ctx, dh_file, SSL_FILETYPE_PEM) <
+		    0) {
+			wpa_printf(MSG_INFO,
+				   "SSL: global use DH PEM file failed");
+			if (wolfSSL_CTX_SetTmpDH_file(ctx, dh_file,
+						      SSL_FILETYPE_ASN1) < 0) {
+				wpa_printf(MSG_INFO,
+					   "SSL: global use DH DER file failed");
+				return -1;
+			}
+		}
+		wpa_printf(MSG_DEBUG, "SSL: global use DH file OK");
+		return 0;
+	}
+
+	return 0;
+}
+
+
+#ifdef HAVE_OCSP
+
+int ocsp_status_cb(void *unused, const char *url, int url_sz,
+		   unsigned char *request, int request_sz,
+		   unsigned char **response)
+{
+	size_t len;
+
+	(void) unused;
+
+	if (!url) {
+		wpa_printf(MSG_DEBUG,
+			   "wolfSSL: OCSP status callback - no response configured");
+		*response = NULL;
+		return 0;
+	}
+
+	*response = (unsigned char *) os_readfile(url, &len);
+	if (!*response) {
+		wpa_printf(MSG_DEBUG,
+			   "wolfSSL: OCSP status callback - could not read response file");
+		return -1;
+	}
+	wpa_printf(MSG_DEBUG,
+		   "wolfSSL: OCSP status callback - send cached response");
+	return len;
+}
+
+
+void ocsp_resp_free_cb(void *ocsp_stapling_response, unsigned char *response)
+{
+	os_free(response);
+}
+
+#endif /* HAVE_OCSP */
+
+
+int tls_global_set_params(void *tls_ctx,
+			  const struct tls_connection_params *params)
+{
+	wpa_printf(MSG_DEBUG, "SSL: global set params");
+
+	if (tls_global_ca_cert(tls_ctx, params->ca_cert) < 0) {
+		wpa_printf(MSG_INFO, "SSL: Failed to load ca cert file '%s'",
+			   params->ca_cert);
+		return -1;
+	}
+
+	if (tls_global_client_cert(tls_ctx, params->client_cert) < 0) {
+		wpa_printf(MSG_INFO,
+			   "SSL: Failed to load client cert file '%s'",
+			   params->client_cert);
+		return -1;
+	}
+
+	if (tls_global_private_key(tls_ctx, params->private_key,
+				   params->private_key_passwd) < 0) {
+		wpa_printf(MSG_INFO,
+			   "SSL: Failed to load private key file '%s'",
+			   params->private_key);
+		return -1;
+	}
+
+	if (tls_global_dh(tls_ctx, params->dh_file, params->dh_blob,
+			  params->dh_blob_len) < 0) {
+		wpa_printf(MSG_INFO, "SSL: Failed to load DH file '%s'",
+			   params->dh_file);
+		return -1;
+	}
+
+	if (params->openssl_ciphers &&
+	    wolfSSL_CTX_set_cipher_list(tls_ctx,
+					params->openssl_ciphers) != 1) {
+		wpa_printf(MSG_INFO,
+			   "wolfSSL: Failed to set cipher string '%s'",
+			   params->openssl_ciphers);
+		return -1;
+	}
+
+#ifdef HAVE_SESSION_TICKET
+	/* Session ticket is off by default - can't disable once on. */
+	if (!(params->flags & TLS_CONN_DISABLE_SESSION_TICKET))
+		wolfSSL_CTX_UseSessionTicket(tls_ctx);
+#endif /* HAVE_SESSION_TICKET */
+
+#ifdef HAVE_OCSP
+	if (params->ocsp_stapling_response) {
+		wolfSSL_CTX_SetOCSP_OverrideURL(tls_ctx,
+						params->ocsp_stapling_response);
+		wolfSSL_CTX_SetOCSP_Cb(tls_ctx, ocsp_status_cb,
+				       ocsp_resp_free_cb, NULL);
+	}
+#endif /* HAVE_OCSP */
+
+	return 0;
+}
+
+
+int tls_global_set_verify(void *tls_ctx, int check_crl)
+{
+	wpa_printf(MSG_DEBUG, "SSL: global set verify: %d", check_crl);
+
+	if (check_crl) {
+		/* Hack to Enable CRLs. */
+		wolfSSL_CTX_LoadCRLBuffer(tls_ctx, NULL, 0, SSL_FILETYPE_PEM);
+	}
+
+	return 0;
+}
+
+
+int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn,
+			      int verify_peer, unsigned int flags,
+			      const u8 *session_ctx, size_t session_ctx_len)
+{
+	if (!conn)
+		return -1;
+
+	wpa_printf(MSG_DEBUG, "SSL: set verify: %d", verify_peer);
+
+	if (verify_peer) {
+		conn->ca_cert_verify = 1;
+		wolfSSL_set_verify(conn->ssl, SSL_VERIFY_PEER |
+				   SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
+				   tls_verify_cb);
+	} else {
+		conn->ca_cert_verify = 0;
+		wolfSSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
+	}
+
+	wolfSSL_set_accept_state(conn->ssl);
+
+	/* TODO: do we need to fake a session like OpenSSL does here? */
+
+	return 0;
+}
+
+
+static struct wpabuf * wolfssl_handshake(struct tls_connection *conn,
+					 const struct wpabuf *in_data,
+					 int server)
+{
+	int res;
+
+	wolfssl_reset_out_data(&conn->output);
+
+	/* Initiate TLS handshake or continue the existing handshake */
+	if (server) {
+		wolfSSL_set_accept_state(conn->ssl);
+		res = wolfSSL_accept(conn->ssl);
+		wpa_printf(MSG_DEBUG, "SSL: wolfSSL_accept: %d", res);
+	} else {
+		wolfSSL_set_connect_state(conn->ssl);
+		res = wolfSSL_connect(conn->ssl);
+		wpa_printf(MSG_DEBUG, "SSL: wolfSSL_connect: %d", res);
+	}
+
+	if (res != 1) {
+		int err = wolfSSL_get_error(conn->ssl, res);
+
+		if (err == SSL_ERROR_WANT_READ) {
+			wpa_printf(MSG_DEBUG,
+				   "SSL: wolfSSL_connect - want more data");
+		} else if (err == SSL_ERROR_WANT_WRITE) {
+			wpa_printf(MSG_DEBUG,
+				   "SSL: wolfSSL_connect - want to write");
+		} else {
+			char msg[80];
+
+			wpa_printf(MSG_DEBUG,
+				   "SSL: wolfSSL_connect - failed %s",
+				   wolfSSL_ERR_error_string(err, msg));
+			conn->failed++;
+		}
+	}
+
+	return conn->output.out_data;
+}
+
+
+static struct wpabuf * wolfssl_get_appl_data(struct tls_connection *conn,
+					     size_t max_len)
+{
+	int res;
+	struct wpabuf *appl_data = wpabuf_alloc(max_len + 100);
+
+	if (!appl_data)
+		return NULL;
+
+	res = wolfSSL_read(conn->ssl, wpabuf_mhead(appl_data),
+			   wpabuf_size(appl_data));
+	if (res < 0) {
+		int err = wolfSSL_get_error(conn->ssl, res);
+
+		if (err == SSL_ERROR_WANT_READ || err == SSL_ERROR_WANT_WRITE) {
+			wpa_printf(MSG_DEBUG,
+				   "SSL: No Application Data included");
+		} else {
+			char msg[80];
+
+			wpa_printf(MSG_DEBUG,
+				   "Failed to read possible Application Data %s",
+				   wolfSSL_ERR_error_string(err, msg));
+		}
+
+		wpabuf_free(appl_data);
+		return NULL;
+	}
+
+	wpabuf_put(appl_data, res);
+	wpa_hexdump_buf_key(MSG_MSGDUMP,
+			    "SSL: Application Data in Finished message",
+			    appl_data);
+	return appl_data;
+}
+
+
+static struct wpabuf *
+wolfssl_connection_handshake(struct tls_connection *conn,
+			     const struct wpabuf *in_data,
+			     struct wpabuf **appl_data, int server)
+{
+	struct wpabuf *out_data;
+
+	wolfssl_reset_in_data(&conn->input, in_data);
+
+	if (appl_data)
+		*appl_data = NULL;
+
+	out_data = wolfssl_handshake(conn, in_data, server);
+	if (!out_data)
+		return NULL;
+
+	if (wolfSSL_is_init_finished(conn->ssl)) {
+		wpa_printf(MSG_DEBUG,
+			   "wolfSSL: Handshake finished - resumed=%d",
+			   tls_connection_resumed(NULL, conn));
+		if (appl_data && in_data)
+			*appl_data = wolfssl_get_appl_data(conn,
+							   wpabuf_len(in_data));
+	}
+
+	return out_data;
+}
+
+
+struct wpabuf * tls_connection_handshake(void *tls_ctx,
+					 struct tls_connection *conn,
+					 const struct wpabuf *in_data,
+					 struct wpabuf **appl_data)
+{
+	return wolfssl_connection_handshake(conn, in_data, appl_data, 0);
+}
+
+
+struct wpabuf * tls_connection_server_handshake(void *tls_ctx,
+						struct tls_connection *conn,
+						const struct wpabuf *in_data,
+						struct wpabuf **appl_data)
+{
+	return wolfssl_connection_handshake(conn, in_data, appl_data, 1);
+}
+
+
+struct wpabuf * tls_connection_encrypt(void *tls_ctx,
+				       struct tls_connection *conn,
+				       const struct wpabuf *in_data)
+{
+	int res;
+
+	if (!conn)
+		return NULL;
+
+	wpa_printf(MSG_DEBUG, "SSL: encrypt: %ld bytes", wpabuf_len(in_data));
+
+	wolfssl_reset_out_data(&conn->output);
+
+	res = wolfSSL_write(conn->ssl, wpabuf_head(in_data),
+			    wpabuf_len(in_data));
+	if (res < 0) {
+		int  err = wolfSSL_get_error(conn->ssl, res);
+		char msg[80];
+
+		wpa_printf(MSG_INFO, "Encryption failed - SSL_write: %s",
+			   wolfSSL_ERR_error_string(err, msg));
+		return NULL;
+	}
+
+	return conn->output.out_data;
+}
+
+
+struct wpabuf * tls_connection_decrypt(void *tls_ctx,
+				       struct tls_connection *conn,
+				       const struct wpabuf *in_data)
+{
+	int res;
+	struct wpabuf *buf;
+
+	if (!conn)
+		return NULL;
+
+	wpa_printf(MSG_DEBUG, "SSL: decrypt");
+
+	wolfssl_reset_in_data(&conn->input, in_data);
+
+	/* Read decrypted data for further processing */
+	/*
+	 * Even though we try to disable TLS compression, it is possible that
+	 * this cannot be done with all TLS libraries. Add extra buffer space
+	 * to handle the possibility of the decrypted data being longer than
+	 * input data.
+	 */
+	buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3);
+	if (!buf)
+		return NULL;
+	res = wolfSSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf));
+	if (res < 0) {
+		wpa_printf(MSG_INFO, "Decryption failed - SSL_read");
+		wpabuf_free(buf);
+		return NULL;
+	}
+	wpabuf_put(buf, res);
+
+	wpa_printf(MSG_DEBUG, "SSL: decrypt: %ld bytes", wpabuf_len(buf));
+
+	return buf;
+}
+
+
+int tls_connection_resumed(void *tls_ctx, struct tls_connection *conn)
+{
+	return conn ? wolfSSL_session_reused(conn->ssl) : 0;
+}
+
+
+int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
+				   u8 *ciphers)
+{
+	char buf[128], *pos, *end;
+	u8 *c;
+	int ret;
+
+	if (!conn || !conn->ssl || !ciphers)
+		return -1;
+
+	buf[0] = '\0';
+	pos = buf;
+	end = pos + sizeof(buf);
+
+	c = ciphers;
+	while (*c != TLS_CIPHER_NONE) {
+		const char *suite;
+
+		switch (*c) {
+		case TLS_CIPHER_RC4_SHA:
+			suite = "RC4-SHA";
+			break;
+		case TLS_CIPHER_AES128_SHA:
+			suite = "AES128-SHA";
+			break;
+		case TLS_CIPHER_RSA_DHE_AES128_SHA:
+			suite = "DHE-RSA-AES128-SHA";
+			break;
+		case TLS_CIPHER_ANON_DH_AES128_SHA:
+			suite = "ADH-AES128-SHA";
+			break;
+		case TLS_CIPHER_RSA_DHE_AES256_SHA:
+			suite = "DHE-RSA-AES256-SHA";
+			break;
+		case TLS_CIPHER_AES256_SHA:
+			suite = "AES256-SHA";
+			break;
+		default:
+			wpa_printf(MSG_DEBUG,
+				   "TLS: Unsupported cipher selection: %d", *c);
+			return -1;
+		}
+		ret = os_snprintf(pos, end - pos, ":%s", suite);
+		if (os_snprintf_error(end - pos, ret))
+			break;
+		pos += ret;
+
+		c++;
+	}
+
+	wpa_printf(MSG_DEBUG, "wolfSSL: cipher suites: %s", buf + 1);
+
+	if (wolfSSL_set_cipher_list(conn->ssl, buf + 1) != 1) {
+		wpa_printf(MSG_DEBUG, "Cipher suite configuration failed");
+		return -1;
+	}
+
+	return 0;
+}
+
+
+int tls_get_cipher(void *tls_ctx, struct tls_connection *conn,
+		   char *buf, size_t buflen)
+{
+	WOLFSSL_CIPHER *cipher;
+	const char *name;
+
+	if (!conn || !conn->ssl)
+		return -1;
+
+	cipher = wolfSSL_get_current_cipher(conn->ssl);
+	if (!cipher)
+		return -1;
+
+	name = wolfSSL_CIPHER_get_name(cipher);
+	if (!name)
+		return -1;
+
+	if (os_strcmp(name, "SSL_RSA_WITH_RC4_128_SHA") == 0)
+		os_strlcpy(buf, "RC4-SHA", buflen);
+	else if (os_strcmp(name, "TLS_RSA_WITH_AES_128_CBC_SHA") == 0)
+		os_strlcpy(buf, "AES128-SHA", buflen);
+	else if (os_strcmp(name, "TLS_DHE_RSA_WITH_AES_128_CBC_SHA") == 0)
+		os_strlcpy(buf, "DHE-RSA-AES128-SHA", buflen);
+	else if (os_strcmp(name, "TLS_DH_anon_WITH_AES_128_CBC_SHA") == 0)
+		os_strlcpy(buf, "ADH-AES128-SHA", buflen);
+	else if (os_strcmp(name, "TLS_DHE_RSA_WITH_AES_256_CBC_SHA") == 0)
+		os_strlcpy(buf, "DHE-RSA-AES256-SHA", buflen);
+	else if (os_strcmp(name, "TLS_RSA_WITH_AES_256_CBC_SHA") == 0)
+		os_strlcpy(buf, "AES256-SHA", buflen);
+	else
+		os_strlcpy(buf, name, buflen);
+
+	return 0;
+}
+
+
+int tls_connection_enable_workaround(void *tls_ctx,
+				     struct tls_connection *conn)
+{
+	/* no empty fragments in wolfSSL for now */
+	return 0;
+}
+
+
+int tls_connection_get_failed(void *tls_ctx, struct tls_connection *conn)
+{
+	if (!conn)
+		return -1;
+
+	return conn->failed;
+}
+
+
+int tls_connection_get_read_alerts(void *tls_ctx, struct tls_connection *conn)
+{
+	if (!conn)
+		return -1;
+
+	/* TODO: this is not incremented anywhere */
+	return conn->read_alerts;
+}
+
+
+int tls_connection_get_write_alerts(void *tls_ctx,
+				    struct tls_connection *conn)
+{
+	if (!conn)
+		return -1;
+
+	/* TODO: this is not incremented anywhere */
+	return conn->write_alerts;
+}
+
+
+
+int tls_get_library_version(char *buf, size_t buf_len)
+{
+	return os_snprintf(buf, buf_len, "wolfSSL build=%s run=%s",
+			   WOLFSSL_VERSION, wolfSSL_lib_version());
+}
+
+int tls_get_version(void *ssl_ctx, struct tls_connection *conn,
+		    char *buf, size_t buflen)
+{
+	const char *name;
+
+	if (!conn || !conn->ssl)
+		return -1;
+
+	name = wolfSSL_get_version(conn->ssl);
+	if (!name)
+		return -1;
+
+	os_strlcpy(buf, name, buflen);
+	return 0;
+}
+
+
+int tls_connection_get_random(void *ssl_ctx, struct tls_connection *conn,
+			      struct tls_random *keys)
+{
+	WOLFSSL *ssl;
+
+	if (!conn || !keys)
+		return -1;
+	ssl = conn->ssl;
+	if (!ssl)
+		return -1;
+
+	os_memset(keys, 0, sizeof(*keys));
+	keys->client_random = conn->client_random;
+	keys->client_random_len = wolfSSL_get_client_random(
+		ssl, conn->client_random, sizeof(conn->client_random));
+	keys->server_random = conn->server_random;
+	keys->server_random_len = wolfSSL_get_server_random(
+		ssl, conn->server_random, sizeof(conn->server_random));
+
+	return 0;
+}
+
+
+int tls_connection_export_key(void *tls_ctx, struct tls_connection *conn,
+			      const char *label, u8 *out, size_t out_len)
+{
+	if (!conn || wolfSSL_make_eap_keys(conn->ssl, out, out_len, label) != 0)
+		return -1;
+	return 0;
+}
+
+
+int tls_connection_get_eap_fast_key(void *tls_ctx, struct tls_connection *conn,
+				    u8 *out, size_t out_len)
+{
+	int ret;
+
+	if (!conn || !conn->ssl)
+		return -1;
+
+	ret = wolfSSL_make_eap_keys(conn->ssl, out, out_len, "key expansion");
+	if (ret != 0)
+		return -1;
+	return 0;
+}
+
+
+#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
+
+int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn,
+				    int ext_type, const u8 *data,
+				    size_t data_len)
+{
+	(void) ssl_ctx;
+
+	if (!conn || !conn->ssl || ext_type != 35)
+		return -1;
+
+	if (wolfSSL_set_SessionTicket(conn->ssl, data,
+				      (unsigned int) data_len) != 1)
+		return -1;
+
+	return 0;
+}
+
+
+static int tls_sess_sec_cb(WOLFSSL *s, void *secret, int *secret_len, void *arg)
+{
+	struct tls_connection *conn = arg;
+	int ret;
+	unsigned char client_random[RAN_LEN];
+	unsigned char server_random[RAN_LEN];
+	word32 ticket_len = sizeof(conn->session_ticket);
+
+	if (!conn || !conn->session_ticket_cb)
+		return 1;
+
+	if (wolfSSL_get_client_random(s, client_random,
+				      sizeof(client_random)) == 0 ||
+	    wolfSSL_get_server_random(s, server_random,
+				      sizeof(server_random)) == 0 ||
+	    wolfSSL_get_SessionTicket(s, conn->session_ticket, &ticketLen) != 1)
+		return 1;
+
+	if (ticket_len == 0)
+		return 0;
+
+	ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
+				      conn->session_ticket, ticketLen,
+				      client_random, server_random, secret);
+	if (ret <= 0)
+		return 1;
+
+	*secret_len = SECRET_LEN;
+	return 0;
+}
+
+#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
+
+
+int tls_connection_set_session_ticket_cb(void *tls_ctx,
+					 struct tls_connection *conn,
+					 tls_session_ticket_cb cb,
+					 void *ctx)
+{
+#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
+	conn->session_ticket_cb = cb;
+	conn->session_ticket_cb_ctx = ctx;
+
+	if (cb) {
+		if (wolfSSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb,
+						  conn) != 1)
+			return -1;
+	} else {
+		if (wolfSSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1)
+			return -1;
+	}
+
+	return 0;
+#else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
+	return -1;
+#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
+}
+
+
+void tls_connection_set_success_data_resumed(struct tls_connection *conn)
+{
+	wpa_printf(MSG_DEBUG,
+		   "wolfSSL: Success data accepted for resumed session");
+}
+
+
+void tls_connection_remove_session(struct tls_connection *conn)
+{
+	WOLFSSL_SESSION *sess;
+
+	sess = wolfSSL_get_session(conn->ssl);
+	if (!sess)
+		return;
+
+	wolfSSL_SSL_SESSION_set_timeout(sess, 0);
+	wpa_printf(MSG_DEBUG,
+		   "wolfSSL: Removed cached session to disable session resumption");
+}
+
+
+void tls_connection_set_success_data(struct tls_connection *conn,
+				     struct wpabuf *data)
+{
+	WOLFSSL_SESSION *sess;
+	struct wpabuf *old;
+
+	wpa_printf(MSG_DEBUG, "wolfSSL: Set success data");
+
+	sess = wolfSSL_get_session(conn->ssl);
+	if (!sess) {
+		wpa_printf(MSG_DEBUG,
+			   "wolfSSL: No session found for success data");
+		goto fail;
+	}
+
+	old = wolfSSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
+	if (old) {
+		wpa_printf(MSG_DEBUG, "wolfSSL: Replacing old success data %p",
+			   old);
+		wpabuf_free(old);
+	}
+	if (wolfSSL_SESSION_set_ex_data(sess, tls_ex_idx_session, data) != 1)
+		goto fail;
+
+	wpa_printf(MSG_DEBUG, "wolfSSL: Stored success data %p", data);
+	conn->success_data = 1;
+	return;
+
+fail:
+	wpa_printf(MSG_INFO, "wolfSSL: Failed to store success data");
+	wpabuf_free(data);
+}
+
+
+const struct wpabuf *
+tls_connection_get_success_data(struct tls_connection *conn)
+{
+	WOLFSSL_SESSION *sess;
+
+	wpa_printf(MSG_DEBUG, "wolfSSL: Get success data");
+
+	sess = wolfSSL_get_session(conn->ssl);
+	if (!sess)
+		return NULL;
+	return wolfSSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
+}

wpa_supplicant/Makefile

@@ -709,6 +709,9 @@ endif
 
 ifdef CONFIG_EAP_PWD
 CFLAGS += -DEAP_PWD
+ifeq ($(CONFIG_TLS), wolfssl)
+CFLAGS += -DCONFIG_ECC
+endif
 OBJS += ../src/eap_peer/eap_pwd.o ../src/eap_common/eap_pwd_common.o
 CONFIG_IEEE8021X_EAPOL=y
 NEED_SHA256=y
@@ -1054,6 +1057,20 @@ CFLAGS += -DCONFIG_TLSV12
 NEED_SHA256=y
 endif
 
+ifeq ($(CONFIG_TLS), wolfssl)
+ifdef TLS_FUNCS
+CFLAGS += -DWOLFSSL_DER_LOAD -I/usr/local/include/wolfssl
+OBJS += ../src/crypto/tls_wolfssl.o
+endif
+OBJS += ../src/crypto/crypto_wolfssl.o
+OBJS_p += ../src/crypto/crypto_wolfssl.o
+ifdef NEED_FIPS186_2_PRF
+OBJS += ../src/crypto/fips_prf_wolfssl.o
+endif
+LIBS += -lwolfssl -lm
+LIBS_p += -lwolfssl -lm
+endif
+
 ifeq ($(CONFIG_TLS), openssl)
 ifdef TLS_FUNCS
 CFLAGS += -DEAP_TLS_OPENSSL
@@ -1274,8 +1291,10 @@ AESOBJS += ../src/crypto/aes-internal.o ../src/crypto/aes-internal-dec.o
 endif
 
 ifneq ($(CONFIG_TLS), openssl)
+ifneq ($(CONFIG_TLS), wolfssl)
 NEED_INTERNAL_AES_WRAP=y
 endif
+endif
 ifdef CONFIG_OPENSSL_INTERNAL_AES_WRAP
 # Seems to be needed at least with BoringSSL
 NEED_INTERNAL_AES_WRAP=y
@@ -1314,10 +1333,12 @@ ifdef CONFIG_OPENSSL_CMAC
 CFLAGS += -DCONFIG_OPENSSL_CMAC
 else
 ifneq ($(CONFIG_TLS), linux)
+ifneq ($(CONFIG_TLS), wolfssl)
 AESOBJS += ../src/crypto/aes-omac1.o
 endif
 endif
 endif
+endif
 ifdef NEED_AES_WRAP
 NEED_AES_ENC=y
 ifdef NEED_INTERNAL_AES_WRAP
@@ -1328,10 +1349,12 @@ ifdef NEED_AES_CBC
 NEED_AES_ENC=y
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
+ifneq ($(CONFIG_TLS), wolfssl)
 AESOBJS += ../src/crypto/aes-cbc.o
 endif
 endif
 endif
+endif
 ifdef NEED_AES_ENC
 ifdef CONFIG_INTERNAL_AES
 AESOBJS += ../src/crypto/aes-internal-enc.o
@@ -1345,10 +1368,12 @@ ifdef NEED_SHA1
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
 ifneq ($(CONFIG_TLS), gnutls)
+ifneq ($(CONFIG_TLS), wolfssl)
 SHA1OBJS += ../src/crypto/sha1.o
 endif
 endif
 endif
+endif
 SHA1OBJS += ../src/crypto/sha1-prf.o
 ifdef CONFIG_INTERNAL_SHA1
 SHA1OBJS += ../src/crypto/sha1-internal.o
@@ -1360,9 +1385,11 @@ ifdef CONFIG_NO_WPA_PASSPHRASE
 CFLAGS += -DCONFIG_NO_PBKDF2
 else
 ifneq ($(CONFIG_TLS), openssl)
+ifneq ($(CONFIG_TLS), wolfssl)
 SHA1OBJS += ../src/crypto/sha1-pbkdf2.o
 endif
 endif
+endif
 ifdef NEED_T_PRF
 SHA1OBJS += ../src/crypto/sha1-tprf.o
 endif
@@ -1375,11 +1402,13 @@ ifndef CONFIG_FIPS
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
 ifneq ($(CONFIG_TLS), gnutls)
+ifneq ($(CONFIG_TLS), wolfssl)
 MD5OBJS += ../src/crypto/md5.o
 endif
 endif
 endif
 endif
+endif
 ifdef NEED_MD5
 ifdef CONFIG_INTERNAL_MD5
 MD5OBJS += ../src/crypto/md5-internal.o
@@ -1397,6 +1426,9 @@ endif
 
 DESOBJS = # none needed when not internal
 ifdef NEED_DES
+ifndef CONFIG_FIPS
+CFLAGS += -DCONFIG_DES
+endif
 ifdef CONFIG_INTERNAL_DES
 DESOBJS += ../src/crypto/des-internal.o
 endif
@@ -1420,10 +1452,12 @@ CFLAGS += -DCONFIG_SHA256
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
 ifneq ($(CONFIG_TLS), gnutls)
+ifneq ($(CONFIG_TLS), wolfssl)
 SHA256OBJS += ../src/crypto/sha256.o
 endif
 endif
 endif
+endif
 SHA256OBJS += ../src/crypto/sha256-prf.o
 ifdef CONFIG_INTERNAL_SHA256
 SHA256OBJS += ../src/crypto/sha256-internal.o
@@ -1457,10 +1491,12 @@ ifdef NEED_SHA384
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
 ifneq ($(CONFIG_TLS), gnutls)
+ifneq ($(CONFIG_TLS), wolfssl)
 OBJS += ../src/crypto/sha384.o
 endif
 endif
 endif
+endif
 CFLAGS += -DCONFIG_SHA384
 OBJS += ../src/crypto/sha384-prf.o
 endif
@@ -1468,10 +1504,12 @@ ifdef NEED_SHA512
 ifneq ($(CONFIG_TLS), openssl)
 ifneq ($(CONFIG_TLS), linux)
 ifneq ($(CONFIG_TLS), gnutls)
+ifneq ($(CONFIG_TLS), wolfssl)
 OBJS += ../src/crypto/sha512.o
 endif
 endif
 endif
+endif
 CFLAGS += -DCONFIG_SHA512
 OBJS += ../src/crypto/sha512-prf.o
 endif
@@ -1668,9 +1706,11 @@ endif
 ifdef CONFIG_FIPS
 CFLAGS += -DCONFIG_FIPS
 ifneq ($(CONFIG_TLS), openssl)
+ifneq ($(CONFIG_TLS), wolfssl)
 $(error CONFIG_FIPS=y requires CONFIG_TLS=openssl)
 endif
 endif
+endif
 
 OBJS += $(SHA1OBJS) $(DESOBJS)