EAP-pwd: Use abstract crypto API

This makes it easier to use EAP-pwd with other crypto libraries than
OpenSSL.

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

hostapd/Android.mk

@@ -455,6 +455,7 @@ ifdef CONFIG_EAP_PWD
 L_CFLAGS += -DEAP_SERVER_PWD
 OBJS += src/eap_server/eap_server_pwd.c src/eap_common/eap_pwd_common.c
 NEED_SHA256=y
+NEED_ECC=y
 endif
 
 ifdef CONFIG_EAP_EKE

hostapd/Makefile

@@ -489,6 +489,7 @@ ifdef CONFIG_EAP_PWD
 CFLAGS += -DEAP_SERVER_PWD
 OBJS += ../src/eap_server/eap_server_pwd.o ../src/eap_common/eap_pwd_common.o
 NEED_SHA256=y
+NEED_ECC=y
 endif
 
 ifdef CONFIG_EAP_EKE

src/eap_common/eap_pwd_common.c

@@ -91,91 +91,33 @@ int compute_password_element(EAP_PWD_group *grp, u16 num,
 			     const u8 *id_peer, size_t id_peer_len,
 			     const u8 *token)
 {
-	BIGNUM *x_candidate = NULL, *rnd = NULL, *cofactor = NULL;
 	struct crypto_hash *hash;
 	unsigned char pwe_digest[SHA256_MAC_LEN], *prfbuf = NULL, ctr;
-	int nid, is_odd, ret = 0;
+	int is_odd, ret = 0;
 	size_t primebytelen, primebitlen;
-
-	switch (num) { /* from IANA registry for IKE D-H groups */
-        case 19:
-		nid = NID_X9_62_prime256v1;
-		break;
-        case 20:
-		nid = NID_secp384r1;
-		break;
-        case 21:
-		nid = NID_secp521r1;
-		break;
-#ifndef OPENSSL_IS_BORINGSSL
-        case 25:
-		nid = NID_X9_62_prime192v1;
-		break;
-#endif /* OPENSSL_IS_BORINGSSL */
-        case 26:
-		nid = NID_secp224r1;
-		break;
-#ifdef NID_brainpoolP224r1
-	case 27:
-		nid = NID_brainpoolP224r1;
-		break;
-#endif /* NID_brainpoolP224r1 */
-#ifdef NID_brainpoolP256r1
-	case 28:
-		nid = NID_brainpoolP256r1;
-		break;
-#endif /* NID_brainpoolP256r1 */
-#ifdef NID_brainpoolP384r1
-	case 29:
-		nid = NID_brainpoolP384r1;
-		break;
-#endif /* NID_brainpoolP384r1 */
-#ifdef NID_brainpoolP512r1
-	case 30:
-		nid = NID_brainpoolP512r1;
-		break;
-#endif /* NID_brainpoolP512r1 */
-        default:
-		wpa_printf(MSG_INFO, "EAP-pwd: unsupported group %d", num);
-		return -1;
-	}
+	struct crypto_bignum *x_candidate = NULL, *rnd = NULL, *cofactor = NULL;
 
 	grp->pwe = NULL;
-	grp->order = NULL;
-	grp->prime = NULL;
-
-	if ((grp->group = EC_GROUP_new_by_curve_name(nid)) == NULL) {
-		wpa_printf(MSG_INFO, "EAP-pwd: unable to create EC_GROUP");
+	grp->group = crypto_ec_init(num);
+	if (!grp->group) {
+		wpa_printf(MSG_INFO, "EAP-pwd: unable to create EC group");
 		goto fail;
 	}
 
-	if (((rnd = BN_new()) == NULL) ||
-	    ((cofactor = BN_new()) == NULL) ||
-	    ((grp->pwe = EC_POINT_new(grp->group)) == NULL) ||
-	    ((grp->order = BN_new()) == NULL) ||
-	    ((grp->prime = BN_new()) == NULL) ||
-	    ((x_candidate = BN_new()) == NULL)) {
+	cofactor = crypto_bignum_init();
+	grp->pwe = crypto_ec_point_init(grp->group);
+	if (!cofactor || !grp->pwe) {
 		wpa_printf(MSG_INFO, "EAP-pwd: unable to create bignums");
 		goto fail;
 	}
 
-	if (!EC_GROUP_get_curve_GFp(grp->group, grp->prime, NULL, NULL, NULL))
-	{
-		wpa_printf(MSG_INFO, "EAP-pwd: unable to get prime for GFp "
-			   "curve");
-		goto fail;
-	}
-	if (!EC_GROUP_get_order(grp->group, grp->order, NULL)) {
-		wpa_printf(MSG_INFO, "EAP-pwd: unable to get order for curve");
-		goto fail;
-	}
-	if (!EC_GROUP_get_cofactor(grp->group, cofactor, NULL)) {
+	if (crypto_ec_cofactor(grp->group, cofactor) < 0) {
 		wpa_printf(MSG_INFO, "EAP-pwd: unable to get cofactor for "
 			   "curve");
 		goto fail;
 	}
-	primebitlen = BN_num_bits(grp->prime);
-	primebytelen = BN_num_bytes(grp->prime);
+	primebitlen = crypto_ec_prime_len_bits(grp->group);
+	primebytelen = crypto_ec_prime_len(grp->group);
 	if ((prfbuf = os_malloc(primebytelen)) == NULL) {
 		wpa_printf(MSG_INFO, "EAP-pwd: unable to malloc space for prf "
 			   "buffer");
@@ -207,15 +149,25 @@ int compute_password_element(EAP_PWD_group *grp, u16 num,
 		eap_pwd_h_update(hash, &ctr, sizeof(ctr));
 		eap_pwd_h_final(hash, pwe_digest);
 
-		BN_bin2bn(pwe_digest, SHA256_MAC_LEN, rnd);
-
+		crypto_bignum_deinit(rnd, 1);
+		rnd = crypto_bignum_init_set(pwe_digest, SHA256_MAC_LEN);
+		if (!rnd) {
+			wpa_printf(MSG_INFO, "EAP-pwd: unable to create rnd");
+			goto fail;
+		}
 		if (eap_pwd_kdf(pwe_digest, SHA256_MAC_LEN,
 				(u8 *) "EAP-pwd Hunting And Pecking",
 				os_strlen("EAP-pwd Hunting And Pecking"),
 				prfbuf, primebitlen) < 0)
 			goto fail;
 
-		BN_bin2bn(prfbuf, primebytelen, x_candidate);
+		crypto_bignum_deinit(x_candidate, 1);
+		x_candidate = crypto_bignum_init_set(prfbuf, primebytelen);
+		if (!x_candidate) {
+			wpa_printf(MSG_INFO,
+				   "EAP-pwd: unable to create x_candidate");
+			goto fail;
+		}
 
 		/*
 		 * eap_pwd_kdf() returns a string of bits 0..primebitlen but
@@ -224,11 +176,14 @@ int compute_password_element(EAP_PWD_group *grp, u16 num,
 		 * then excessive bits-- those _after_ primebitlen-- so now
 		 * we have to shift right the amount we masked off.
 		 */
-		if (primebitlen % 8)
-			BN_rshift(x_candidate, x_candidate,
-				  (8 - (primebitlen % 8)));
+		if ((primebitlen % 8) &&
+		    crypto_bignum_rshift(x_candidate,
+					 (8 - (primebitlen % 8)),
+					 x_candidate) < 0)
+			goto fail;
 
-		if (BN_ucmp(x_candidate, grp->prime) >= 0)
+		if (crypto_bignum_cmp(x_candidate,
+				      crypto_ec_get_prime(grp->group)) >= 0)
 			continue;
 
 		wpa_hexdump(MSG_DEBUG, "EAP-pwd: x_candidate",
@@ -238,40 +193,38 @@ int compute_password_element(EAP_PWD_group *grp, u16 num,
 		 * need to unambiguously identify the solution, if there is
 		 * one...
 		 */
-		if (BN_is_odd(rnd))
-			is_odd = 1;
-		else
-			is_odd = 0;
+		is_odd = crypto_bignum_is_odd(rnd);
 
 		/*
 		 * solve the quadratic equation, if it's not solvable then we
 		 * don't have a point
 		 */
-		if (!EC_POINT_set_compressed_coordinates_GFp(grp->group,
-							     grp->pwe,
-							     x_candidate,
-							     is_odd, NULL))
+		if (crypto_ec_point_solve_y_coord(grp->group, grp->pwe,
+						  x_candidate, is_odd) != 0) {
+			wpa_printf(MSG_INFO, "EAP-pwd: Could not solve for y");
 			continue;
+		}
 		/*
 		 * If there's a solution to the equation then the point must be
 		 * on the curve so why check again explicitly? OpenSSL code
 		 * says this is required by X9.62. We're not X9.62 but it can't
 		 * hurt just to be sure.
 		 */
-		if (!EC_POINT_is_on_curve(grp->group, grp->pwe, NULL)) {
+		if (!crypto_ec_point_is_on_curve(grp->group, grp->pwe)) {
 			wpa_printf(MSG_INFO, "EAP-pwd: point is not on curve");
 			continue;
 		}
 
-		if (BN_cmp(cofactor, BN_value_one())) {
+		if (!crypto_bignum_is_one(cofactor)) {
 			/* make sure the point is not in a small sub-group */
-			if (!EC_POINT_mul(grp->group, grp->pwe, NULL, grp->pwe,
-					  cofactor, NULL)) {
+			if (crypto_ec_point_mul(grp->group, grp->pwe,
+						cofactor, grp->pwe) != 0) {
 				wpa_printf(MSG_INFO, "EAP-pwd: cannot "
 					   "multiply generator by order");
 				continue;
 			}
-			if (EC_POINT_is_at_infinity(grp->group, grp->pwe)) {
+			if (crypto_ec_point_is_at_infinity(grp->group,
+							   grp->pwe)) {
 				wpa_printf(MSG_INFO, "EAP-pwd: point is at "
 					   "infinity");
 				continue;
@@ -284,37 +237,38 @@ int compute_password_element(EAP_PWD_group *grp, u16 num,
 	grp->group_num = num;
 	if (0) {
  fail:
-		EC_GROUP_free(grp->group);
+		crypto_ec_deinit(grp->group);
 		grp->group = NULL;
-		EC_POINT_clear_free(grp->pwe);
+		crypto_ec_point_deinit(grp->pwe, 1);
 		grp->pwe = NULL;
-		BN_clear_free(grp->order);
-		grp->order = NULL;
-		BN_clear_free(grp->prime);
-		grp->prime = NULL;
 		ret = 1;
 	}
 	/* cleanliness and order.... */
-	BN_clear_free(cofactor);
-	BN_clear_free(x_candidate);
-	BN_clear_free(rnd);
+	crypto_bignum_deinit(cofactor, 1);
+	crypto_bignum_deinit(x_candidate, 1);
+	crypto_bignum_deinit(rnd, 1);
 	os_free(prfbuf);
 
 	return ret;
 }
 
 
-int compute_keys(EAP_PWD_group *grp, BN_CTX *bnctx, const BIGNUM *k,
-		 const BIGNUM *peer_scalar, const BIGNUM *server_scalar,
+int compute_keys(EAP_PWD_group *grp, const struct crypto_bignum *k,
+		 const struct crypto_bignum *peer_scalar,
+		 const struct crypto_bignum *server_scalar,
 		 const u8 *confirm_peer, const u8 *confirm_server,
 		 const u32 *ciphersuite, u8 *msk, u8 *emsk, u8 *session_id)
 {
 	struct crypto_hash *hash;
 	u8 mk[SHA256_MAC_LEN], *cruft;
 	u8 msk_emsk[EAP_MSK_LEN + EAP_EMSK_LEN];
-	int offset;
+	size_t prime_len, order_len;
+
+	prime_len = crypto_ec_prime_len(grp->group);
+	order_len = crypto_ec_order_len(grp->group);
 
-	if ((cruft = os_malloc(BN_num_bytes(grp->prime))) == NULL)
+	cruft = os_malloc(prime_len);
+	if (!cruft)
 		return -1;
 
 	/*
@@ -328,14 +282,10 @@ int compute_keys(EAP_PWD_group *grp, BN_CTX *bnctx, const BIGNUM *k,
 		return -1;
 	}
 	eap_pwd_h_update(hash, (const u8 *) ciphersuite, sizeof(u32));
-	offset = BN_num_bytes(grp->order) - BN_num_bytes(peer_scalar);
-	os_memset(cruft, 0, BN_num_bytes(grp->prime));
-	BN_bn2bin(peer_scalar, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(grp->order));
-	offset = BN_num_bytes(grp->order) - BN_num_bytes(server_scalar);
-	os_memset(cruft, 0, BN_num_bytes(grp->prime));
-	BN_bn2bin(server_scalar, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(grp->order));
+	crypto_bignum_to_bin(peer_scalar, cruft, order_len, order_len);
+	eap_pwd_h_update(hash, cruft, order_len);
+	crypto_bignum_to_bin(server_scalar, cruft, order_len, order_len);
+	eap_pwd_h_update(hash, cruft, order_len);
 	eap_pwd_h_final(hash, &session_id[1]);
 
 	/* then compute MK = H(k | confirm-peer | confirm-server) */
@@ -344,10 +294,8 @@ int compute_keys(EAP_PWD_group *grp, BN_CTX *bnctx, const BIGNUM *k,
 		os_free(cruft);
 		return -1;
 	}
-	offset = BN_num_bytes(grp->prime) - BN_num_bytes(k);
-	os_memset(cruft, 0, BN_num_bytes(grp->prime));
-	BN_bn2bin(k, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(grp->prime));
+	crypto_bignum_to_bin(k, cruft, prime_len, prime_len);
+	eap_pwd_h_update(hash, cruft, prime_len);
 	os_free(cruft);
 	eap_pwd_h_update(hash, confirm_peer, SHA256_MAC_LEN);
 	eap_pwd_h_update(hash, confirm_server, SHA256_MAC_LEN);

src/eap_common/eap_pwd_common.h

@@ -9,20 +9,14 @@
 #ifndef EAP_PWD_COMMON_H
 #define EAP_PWD_COMMON_H
 
-#include <openssl/bn.h>
-#include <openssl/ec.h>
-#include <openssl/evp.h>
-
 /*
  * definition of a finite cyclic group
  * TODO: support one based on a prime field
  */
 typedef struct group_definition_ {
 	u16 group_num;
-	EC_GROUP *group;
-	EC_POINT *pwe;
-	BIGNUM *order;
-	BIGNUM *prime;
+	struct crypto_ec *group;
+	struct crypto_ec_point *pwe;
 } EAP_PWD_group;
 
 /*
@@ -61,8 +55,9 @@ int compute_password_element(EAP_PWD_group *grp, u16 num,
 			     const u8 *id_server, size_t id_server_len,
 			     const u8 *id_peer, size_t id_peer_len,
 			     const u8 *token);
-int compute_keys(EAP_PWD_group *grp, BN_CTX *bnctx, const BIGNUM *k,
-		 const BIGNUM *peer_scalar, const BIGNUM *server_scalar,
+int compute_keys(EAP_PWD_group *grp, const struct crypto_bignum *k,
+		 const struct crypto_bignum *peer_scalar,
+		 const struct crypto_bignum  *server_scalar,
 		 const u8 *confirm_peer, const u8 *confirm_server,
 		 const u32 *ciphersuite, u8 *msk, u8 *emsk, u8 *session_id);
 struct crypto_hash * eap_pwd_h_init(void);

src/eap_peer/eap_pwd.c

@@ -11,6 +11,7 @@
 #include "common.h"
 #include "crypto/sha256.h"
 #include "crypto/ms_funcs.h"
+#include "crypto/crypto.h"
 #include "eap_peer/eap_i.h"
 #include "eap_common/eap_pwd_common.h"
 
@@ -36,18 +37,16 @@ struct eap_pwd_data {
 	size_t out_frag_pos;
 	size_t mtu;
 
-	BIGNUM *k;
-	BIGNUM *private_value;
-	BIGNUM *server_scalar;
-	BIGNUM *my_scalar;
-	EC_POINT *my_element;
-	EC_POINT *server_element;
+	struct crypto_bignum *k;
+	struct crypto_bignum *private_value;
+	struct crypto_bignum *server_scalar;
+	struct crypto_bignum *my_scalar;
+	struct crypto_ec_point *my_element;
+	struct crypto_ec_point *server_element;
 
 	u8 msk[EAP_MSK_LEN];
 	u8 emsk[EAP_EMSK_LEN];
 	u8 session_id[1 + SHA256_MAC_LEN];
-
-	BN_CTX *bnctx;
 };
 
 
@@ -107,15 +106,8 @@ static void * eap_pwd_init(struct eap_sm *sm)
 		return NULL;
 	}
 
-	if ((data->bnctx = BN_CTX_new()) == NULL) {
-		wpa_printf(MSG_INFO, "EAP-PWD: bn context allocation fail");
-		os_free(data);
-		return NULL;
-	}
-
 	if ((data->id_peer = os_malloc(identity_len)) == NULL) {
 		wpa_printf(MSG_INFO, "EAP-PWD: memory allocation id fail");
-		BN_CTX_free(data->bnctx);
 		os_free(data);
 		return NULL;
 	}
@@ -125,7 +117,6 @@ static void * eap_pwd_init(struct eap_sm *sm)
 
 	if ((data->password = os_malloc(password_len)) == NULL) {
 		wpa_printf(MSG_INFO, "EAP-PWD: memory allocation psk fail");
-		BN_CTX_free(data->bnctx);
 		bin_clear_free(data->id_peer, data->id_peer_len);
 		os_free(data);
 		return NULL;
@@ -152,21 +143,18 @@ static void eap_pwd_deinit(struct eap_sm *sm, void *priv)
 {
 	struct eap_pwd_data *data = priv;
 
-	BN_clear_free(data->private_value);
-	BN_clear_free(data->server_scalar);
-	BN_clear_free(data->my_scalar);
-	BN_clear_free(data->k);
-	BN_CTX_free(data->bnctx);
-	EC_POINT_clear_free(data->my_element);
-	EC_POINT_clear_free(data->server_element);
+	crypto_bignum_deinit(data->private_value, 1);
+	crypto_bignum_deinit(data->server_scalar, 1);
+	crypto_bignum_deinit(data->my_scalar, 1);
+	crypto_bignum_deinit(data->k, 1);
+	crypto_ec_point_deinit(data->my_element, 1);
+	crypto_ec_point_deinit(data->server_element, 1);
 	bin_clear_free(data->id_peer, data->id_peer_len);
 	bin_clear_free(data->id_server, data->id_server_len);
 	bin_clear_free(data->password, data->password_len);
 	if (data->grp) {
-		EC_GROUP_free(data->grp->group);
-		EC_POINT_clear_free(data->grp->pwe);
-		BN_clear_free(data->grp->order);
-		BN_clear_free(data->grp->prime);
+		crypto_ec_deinit(data->grp->group);
+		crypto_ec_point_deinit(data->grp->pwe, 1);
 		os_free(data->grp);
 	}
 	wpabuf_free(data->inbuf);
@@ -331,7 +319,7 @@ eap_pwd_perform_id_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 	}
 
 	wpa_printf(MSG_DEBUG, "EAP-PWD (peer): computed %d bit PWE...",
-		   BN_num_bits(data->grp->prime));
+		   (int) crypto_ec_prime_len_bits(data->grp->group));
 
 	data->outbuf = wpabuf_alloc(sizeof(struct eap_pwd_id) +
 				    data->id_peer_len);
@@ -356,10 +344,10 @@ eap_pwd_perform_commit_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 				const struct wpabuf *reqData,
 				const u8 *payload, size_t payload_len)
 {
-	EC_POINT *K = NULL, *point = NULL;
-	BIGNUM *mask = NULL, *x = NULL, *y = NULL, *cofactor = NULL;
-	u16 offset;
-	u8 *ptr, *scalar = NULL, *element = NULL;
+	struct crypto_ec_point *K = NULL, *point = NULL;
+	struct crypto_bignum *mask = NULL, *cofactor = NULL;
+	const u8 *ptr;
+	u8 *scalar = NULL, *element = NULL;
 	size_t prime_len, order_len;
 
 	if (data->state != PWD_Commit_Req) {
@@ -367,8 +355,8 @@ eap_pwd_perform_commit_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 		goto fin;
 	}
 
-	prime_len = BN_num_bytes(data->grp->prime);
-	order_len = BN_num_bytes(data->grp->order);
+	prime_len = crypto_ec_prime_len(data->grp->group);
+	order_len = crypto_ec_order_len(data->grp->group);
 
 	if (payload_len != 2 * prime_len + order_len) {
 		wpa_printf(MSG_INFO,
@@ -378,87 +366,85 @@ eap_pwd_perform_commit_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 		goto fin;
 	}
 
-	if (((data->private_value = BN_new()) == NULL) ||
-	    ((data->my_element = EC_POINT_new(data->grp->group)) == NULL) ||
-	    ((cofactor = BN_new()) == NULL) ||
-	    ((data->my_scalar = BN_new()) == NULL) ||
-	    ((mask = BN_new()) == NULL)) {
+	data->private_value = crypto_bignum_init();
+	data->my_element = crypto_ec_point_init(data->grp->group);
+	cofactor = crypto_bignum_init();
+	data->my_scalar = crypto_bignum_init();
+	mask = crypto_bignum_init();
+	if (!data->private_value || !data->my_element || !cofactor ||
+	    !data->my_scalar || !mask) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): scalar allocation fail");
 		goto fin;
 	}
 
-	if (!EC_GROUP_get_cofactor(data->grp->group, cofactor, NULL)) {
+	if (crypto_ec_cofactor(data->grp->group, cofactor) < 0) {
 		wpa_printf(MSG_INFO, "EAP-pwd (peer): unable to get cofactor "
 			   "for curve");
 		goto fin;
 	}
 
-	if (BN_rand_range(data->private_value, data->grp->order) != 1 ||
-	    BN_rand_range(mask, data->grp->order) != 1 ||
-	    BN_add(data->my_scalar, data->private_value, mask) != 1 ||
-	    BN_mod(data->my_scalar, data->my_scalar, data->grp->order,
-		   data->bnctx) != 1) {
+	if (crypto_bignum_rand(data->private_value,
+			       crypto_ec_get_order(data->grp->group)) < 0 ||
+	    crypto_bignum_rand(mask,
+			       crypto_ec_get_order(data->grp->group)) < 0 ||
+	    crypto_bignum_add(data->private_value, mask,
+			      data->my_scalar) < 0 ||
+	    crypto_bignum_mod(data->my_scalar,
+			      crypto_ec_get_order(data->grp->group),
+			      data->my_scalar) < 0) {
 		wpa_printf(MSG_INFO,
 			   "EAP-pwd (peer): unable to get randomness");
 		goto fin;
 	}
 
-	if (!EC_POINT_mul(data->grp->group, data->my_element, NULL,
-			  data->grp->pwe, mask, data->bnctx)) {
+	if (crypto_ec_point_mul(data->grp->group, data->grp->pwe, mask,
+				data->my_element) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): element allocation "
 			   "fail");
 		eap_pwd_state(data, FAILURE);
 		goto fin;
 	}
 
-	if (!EC_POINT_invert(data->grp->group, data->my_element, data->bnctx))
-	{
+	if (crypto_ec_point_invert(data->grp->group, data->my_element) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): element inversion fail");
 		goto fin;
 	}
 
-	if (((x = BN_new()) == NULL) ||
-	    ((y = BN_new()) == NULL)) {
-		wpa_printf(MSG_INFO, "EAP-PWD (peer): point allocation fail");
-		goto fin;
-	}
-
 	/* process the request */
-	if (((data->server_scalar = BN_new()) == NULL) ||
-	    ((data->k = BN_new()) == NULL) ||
-	    ((K = EC_POINT_new(data->grp->group)) == NULL) ||
-	    ((point = EC_POINT_new(data->grp->group)) == NULL) ||
-	    ((data->server_element = EC_POINT_new(data->grp->group)) == NULL))
-	{
+	data->k = crypto_bignum_init();
+	K = crypto_ec_point_init(data->grp->group);
+	point = crypto_ec_point_init(data->grp->group);
+	if (!data->k || !K || !point) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): peer data allocation "
 			   "fail");
 		goto fin;
 	}
 
 	/* element, x then y, followed by scalar */
-	ptr = (u8 *) payload;
-	BN_bin2bn(ptr, BN_num_bytes(data->grp->prime), x);
-	ptr += BN_num_bytes(data->grp->prime);
-	BN_bin2bn(ptr, BN_num_bytes(data->grp->prime), y);
-	ptr += BN_num_bytes(data->grp->prime);
-	BN_bin2bn(ptr, BN_num_bytes(data->grp->order), data->server_scalar);
-	if (!EC_POINT_set_affine_coordinates_GFp(data->grp->group,
-						 data->server_element, x, y,
-						 data->bnctx)) {
+	ptr = payload;
+	data->server_element = crypto_ec_point_from_bin(data->grp->group, ptr);
+	if (!data->server_element) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): setting peer element "
 			   "fail");
 		goto fin;
 	}
+	ptr += prime_len * 2;
+	data->server_scalar = crypto_bignum_init_set(ptr, order_len);
+	if (!data->server_scalar) {
+		wpa_printf(MSG_INFO,
+			   "EAP-PWD (peer): setting peer scalar fail");
+		goto fin;
+	}
 
 	/* check to ensure server's element is not in a small sub-group */
-	if (BN_cmp(cofactor, BN_value_one())) {
-		if (!EC_POINT_mul(data->grp->group, point, NULL,
-				  data->server_element, cofactor, NULL)) {
+	if (!crypto_bignum_is_one(cofactor)) {
+		if (crypto_ec_point_mul(data->grp->group, data->server_element,
+					cofactor, point) < 0) {
 			wpa_printf(MSG_INFO, "EAP-PWD (peer): cannot multiply "
 				   "server element by order!\n");
 			goto fin;
 		}
-		if (EC_POINT_is_at_infinity(data->grp->group, point)) {
+		if (crypto_ec_point_is_at_infinity(data->grp->group, point)) {
 			wpa_printf(MSG_INFO, "EAP-PWD (peer): server element "
 				   "is at infinity!\n");
 			goto fin;
@@ -466,21 +452,20 @@ eap_pwd_perform_commit_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 	}
 
 	/* compute the shared key, k */
-	if ((!EC_POINT_mul(data->grp->group, K, NULL, data->grp->pwe,
-			   data->server_scalar, data->bnctx)) ||
-	    (!EC_POINT_add(data->grp->group, K, K, data->server_element,
-			   data->bnctx)) ||
-	    (!EC_POINT_mul(data->grp->group, K, NULL, K, data->private_value,
-			   data->bnctx))) {
+	if (crypto_ec_point_mul(data->grp->group, data->grp->pwe,
+				data->server_scalar, K) < 0 ||
+	    crypto_ec_point_add(data->grp->group, K, data->server_element,
+				K) < 0 ||
+	    crypto_ec_point_mul(data->grp->group, K, data->private_value,
+				K) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): computing shared key "
 			   "fail");
 		goto fin;
 	}
 
 	/* ensure that the shared key isn't in a small sub-group */
-	if (BN_cmp(cofactor, BN_value_one())) {
-		if (!EC_POINT_mul(data->grp->group, K, NULL, K, cofactor,
-				  NULL)) {
+	if (!crypto_bignum_is_one(cofactor)) {
+		if (crypto_ec_point_mul(data->grp->group, K, cofactor, K) < 0) {
 			wpa_printf(MSG_INFO, "EAP-PWD (peer): cannot multiply "
 				   "shared key point by order");
 			goto fin;
@@ -493,30 +478,22 @@ eap_pwd_perform_commit_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 	 * never going to happen it is a simple and safe check "just to be
 	 * sure" so let's be safe.
 	 */
-	if (EC_POINT_is_at_infinity(data->grp->group, K)) {
+	if (crypto_ec_point_is_at_infinity(data->grp->group, K)) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): shared key point is at "
 			   "infinity!\n");
 		goto fin;
 	}
 
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group, K, data->k,
-						 NULL, data->bnctx)) {
+	if (crypto_ec_point_x(data->grp->group, K, data->k) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): unable to extract "
 			   "shared secret from point");
 		goto fin;
 	}
 
 	/* now do the response */
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group,
-						 data->my_element, x, y,
-						 data->bnctx)) {
-		wpa_printf(MSG_INFO, "EAP-PWD (peer): point assignment fail");
-		goto fin;
-	}
-
-	if (((scalar = os_malloc(BN_num_bytes(data->grp->order))) == NULL) ||
-	    ((element = os_malloc(BN_num_bytes(data->grp->prime) * 2)) ==
-	     NULL)) {
+	scalar = os_zalloc(order_len);
+	element = os_zalloc(prime_len * 2);
+	if (!scalar || !element) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): data allocation fail");
 		goto fin;
 	}
@@ -526,36 +503,28 @@ eap_pwd_perform_commit_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 	 * sufficiently smaller than the prime or order might need pre-pending
 	 * with zeros.
 	 */
-	os_memset(scalar, 0, BN_num_bytes(data->grp->order));
-	os_memset(element, 0, BN_num_bytes(data->grp->prime) * 2);
-	offset = BN_num_bytes(data->grp->order) -
-		BN_num_bytes(data->my_scalar);
-	BN_bn2bin(data->my_scalar, scalar + offset);
-
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(x);
-	BN_bn2bin(x, element + offset);
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(y);
-	BN_bn2bin(y, element + BN_num_bytes(data->grp->prime) + offset);
-
-	data->outbuf = wpabuf_alloc(BN_num_bytes(data->grp->order) +
-				    2 * BN_num_bytes(data->grp->prime));
+	crypto_bignum_to_bin(data->my_scalar, scalar, order_len, order_len);
+	if (crypto_ec_point_to_bin(data->grp->group, data->my_element, element,
+				   element + prime_len) != 0) {
+		wpa_printf(MSG_INFO, "EAP-PWD (peer): point assignment fail");
+		goto fin;
+	}
+
+	data->outbuf = wpabuf_alloc(order_len + 2 * prime_len);
 	if (data->outbuf == NULL)
 		goto fin;
 
 	/* we send the element as (x,y) follwed by the scalar */
-	wpabuf_put_data(data->outbuf, element,
-			2 * BN_num_bytes(data->grp->prime));
-	wpabuf_put_data(data->outbuf, scalar, BN_num_bytes(data->grp->order));
+	wpabuf_put_data(data->outbuf, element, 2 * prime_len);
+	wpabuf_put_data(data->outbuf, scalar, order_len);
 
 fin:
 	os_free(scalar);
 	os_free(element);
-	BN_clear_free(x);
-	BN_clear_free(y);
-	BN_clear_free(mask);
-	BN_clear_free(cofactor);
-	EC_POINT_clear_free(K);
-	EC_POINT_clear_free(point);
+	crypto_bignum_deinit(mask, 1);
+	crypto_bignum_deinit(cofactor, 1);
+	crypto_ec_point_deinit(K, 1);
+	crypto_ec_point_deinit(point, 1);
 	if (data->outbuf == NULL)
 		eap_pwd_state(data, FAILURE);
 	else
@@ -569,12 +538,11 @@ eap_pwd_perform_confirm_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 				 const struct wpabuf *reqData,
 				 const u8 *payload, size_t payload_len)
 {
-	BIGNUM *x = NULL, *y = NULL;
 	struct crypto_hash *hash;
 	u32 cs;
 	u16 grp;
 	u8 conf[SHA256_MAC_LEN], *cruft = NULL, *ptr;
-	int offset;
+	size_t prime_len = 0, order_len = 0;
 
 	if (data->state != PWD_Confirm_Req) {
 		ret->ignore = TRUE;
@@ -588,6 +556,9 @@ eap_pwd_perform_confirm_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 		goto fin;
 	}
 
+	prime_len = crypto_ec_prime_len(data->grp->group);
+	order_len = crypto_ec_order_len(data->grp->group);
+
 	/*
 	 * first build up the ciphersuite which is group | random_function |
 	 *	prf
@@ -600,9 +571,9 @@ eap_pwd_perform_confirm_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 	ptr += sizeof(u8);
 	*ptr = EAP_PWD_DEFAULT_PRF;
 
-	/* each component of the cruft will be at most as big as the prime */
-	if (((cruft = os_malloc(BN_num_bytes(data->grp->prime))) == NULL) ||
-	    ((x = BN_new()) == NULL) || ((y = BN_new()) == NULL)) {
+	/* each component of the point will be at most as big as the prime */
+	cruft = os_malloc(prime_len * 2);
+	if (!cruft) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): confirm allocation "
 			   "fail");
 		goto fin;
@@ -620,59 +591,34 @@ eap_pwd_perform_confirm_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 	 * zero the memory each time because this is mod prime math and some
 	 * value may start with a few zeros and the previous one did not.
 	 */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(data->k);
-	BN_bn2bin(data->k, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	crypto_bignum_to_bin(data->k, cruft, prime_len, prime_len);
+	eap_pwd_h_update(hash, cruft, prime_len);
 
 	/* server element: x, y */
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group,
-						 data->server_element, x, y,
-						 data->bnctx)) {
+	if (crypto_ec_point_to_bin(data->grp->group, data->server_element,
+				   cruft, cruft + prime_len) != 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): confirm point "
 			   "assignment fail");
 		goto fin;
 	}
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(x);
-	BN_bn2bin(x, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(y);
-	BN_bn2bin(y, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	eap_pwd_h_update(hash, cruft, prime_len * 2);
 
 	/* server scalar */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->order) -
-		BN_num_bytes(data->server_scalar);
-	BN_bn2bin(data->server_scalar, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->order));
+	crypto_bignum_to_bin(data->server_scalar, cruft, order_len, order_len);
+	eap_pwd_h_update(hash, cruft, order_len);
 
 	/* my element: x, y */
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group,
-						 data->my_element, x, y,
-						 data->bnctx)) {
+	if (crypto_ec_point_to_bin(data->grp->group, data->my_element, cruft,
+				   cruft + prime_len) != 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): confirm point "
 			   "assignment fail");
 		goto fin;
 	}
-
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(x);
-	BN_bn2bin(x, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(y);
-	BN_bn2bin(y, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	eap_pwd_h_update(hash, cruft, prime_len * 2);
 
 	/* my scalar */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->order) -
-		BN_num_bytes(data->my_scalar);
-	BN_bn2bin(data->my_scalar, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->order));
+	crypto_bignum_to_bin(data->my_scalar, cruft, order_len, order_len);
+	eap_pwd_h_update(hash, cruft, order_len);
 
 	/* the ciphersuite */
 	eap_pwd_h_update(hash, (u8 *) &cs, sizeof(u32));
@@ -698,58 +644,34 @@ eap_pwd_perform_confirm_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 		goto fin;
 
 	/* k */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(data->k);
-	BN_bn2bin(data->k, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	crypto_bignum_to_bin(data->k, cruft, prime_len, prime_len);
+	eap_pwd_h_update(hash, cruft, prime_len);
 
 	/* my element */
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group,
-						 data->my_element, x, y,
-						 data->bnctx)) {
+	if (crypto_ec_point_to_bin(data->grp->group, data->my_element, cruft,
+				   cruft + prime_len) != 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): confirm point "
 			   "assignment fail");
 		goto fin;
 	}
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(x);
-	BN_bn2bin(x, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(y);
-	BN_bn2bin(y, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	eap_pwd_h_update(hash, cruft, prime_len * 2);
 
 	/* my scalar */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->order) -
-		BN_num_bytes(data->my_scalar);
-	BN_bn2bin(data->my_scalar, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->order));
+	crypto_bignum_to_bin(data->my_scalar, cruft, order_len, order_len);
+	eap_pwd_h_update(hash, cruft, order_len);
 
 	/* server element: x, y */
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group,
-						 data->server_element, x, y,
-						 data->bnctx)) {
+	if (crypto_ec_point_to_bin(data->grp->group, data->server_element,
+				   cruft, cruft + prime_len) != 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): confirm point "
 			   "assignment fail");
 		goto fin;
 	}
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(x);
-	BN_bn2bin(x, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(y);
-	BN_bn2bin(y, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	eap_pwd_h_update(hash, cruft, prime_len * 2);
 
 	/* server scalar */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->order) -
-		BN_num_bytes(data->server_scalar);
-	BN_bn2bin(data->server_scalar, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->order));
+	crypto_bignum_to_bin(data->server_scalar, cruft, order_len, order_len);
+	eap_pwd_h_update(hash, cruft, order_len);
 
 	/* the ciphersuite */
 	eap_pwd_h_update(hash, (u8 *) &cs, sizeof(u32));
@@ -757,7 +679,7 @@ eap_pwd_perform_confirm_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 	/* all done */
 	eap_pwd_h_final(hash, conf);
 
-	if (compute_keys(data->grp, data->bnctx, data->k,
+	if (compute_keys(data->grp, data->k,
 			 data->my_scalar, data->server_scalar, conf, ptr,
 			 &cs, data->msk, data->emsk, data->session_id) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): unable to compute MSK | "
@@ -772,10 +694,7 @@ eap_pwd_perform_confirm_exchange(struct eap_sm *sm, struct eap_pwd_data *data,
 	wpabuf_put_data(data->outbuf, conf, SHA256_MAC_LEN);
 
 fin:
-	if (data->grp)
-		bin_clear_free(cruft, BN_num_bytes(data->grp->prime));
-	BN_clear_free(x);
-	BN_clear_free(y);
+	bin_clear_free(cruft, prime_len * 2);
 	if (data->outbuf == NULL) {
 		ret->methodState = METHOD_DONE;
 		ret->decision = DECISION_FAIL;

src/eap_server/eap_server_pwd.c

@@ -11,6 +11,7 @@
 #include "common.h"
 #include "crypto/sha256.h"
 #include "crypto/ms_funcs.h"
+#include "crypto/crypto.h"
 #include "eap_server/eap_i.h"
 #include "eap_common/eap_pwd_common.h"
 
@@ -36,20 +37,18 @@ struct eap_pwd_data {
 	size_t out_frag_pos;
 	size_t mtu;
 
-	BIGNUM *k;
-	BIGNUM *private_value;
-	BIGNUM *peer_scalar;
-	BIGNUM *my_scalar;
-	EC_POINT *my_element;
-	EC_POINT *peer_element;
+	struct crypto_bignum *k;
+	struct crypto_bignum *private_value;
+	struct crypto_bignum *peer_scalar;
+	struct crypto_bignum *my_scalar;
+	struct crypto_ec_point *my_element;
+	struct crypto_ec_point *peer_element;
 
 	u8 my_confirm[SHA256_MAC_LEN];
 
 	u8 msk[EAP_MSK_LEN];
 	u8 emsk[EAP_EMSK_LEN];
 	u8 session_id[1 + SHA256_MAC_LEN];
-
-	BN_CTX *bnctx;
 };
 
 
@@ -116,15 +115,6 @@ static void * eap_pwd_init(struct eap_sm *sm)
 	os_memcpy(data->password, sm->user->password, data->password_len);
 	data->password_hash = sm->user->password_hash;
 
-	data->bnctx = BN_CTX_new();
-	if (data->bnctx == NULL) {
-		wpa_printf(MSG_INFO, "EAP-PWD: bn context allocation fail");
-		bin_clear_free(data->password, data->password_len);
-		bin_clear_free(data->id_server, data->id_server_len);
-		os_free(data);
-		return NULL;
-	}
-
 	data->in_frag_pos = data->out_frag_pos = 0;
 	data->inbuf = data->outbuf = NULL;
 	/* use default MTU from RFC 5931 if not configured otherwise */
@@ -138,21 +128,18 @@ static void eap_pwd_reset(struct eap_sm *sm, void *priv)
 {
 	struct eap_pwd_data *data = priv;
 
-	BN_clear_free(data->private_value);
-	BN_clear_free(data->peer_scalar);
-	BN_clear_free(data->my_scalar);
-	BN_clear_free(data->k);
-	BN_CTX_free(data->bnctx);
-	EC_POINT_clear_free(data->my_element);
-	EC_POINT_clear_free(data->peer_element);
+	crypto_bignum_deinit(data->private_value, 1);
+	crypto_bignum_deinit(data->peer_scalar, 1);
+	crypto_bignum_deinit(data->my_scalar, 1);
+	crypto_bignum_deinit(data->k, 1);
+	crypto_ec_point_deinit(data->my_element, 1);
+	crypto_ec_point_deinit(data->peer_element, 1);
 	bin_clear_free(data->id_peer, data->id_peer_len);
 	bin_clear_free(data->id_server, data->id_server_len);
 	bin_clear_free(data->password, data->password_len);
 	if (data->grp) {
-		EC_GROUP_free(data->grp->group);
-		EC_POINT_clear_free(data->grp->pwe);
-		BN_clear_free(data->grp->order);
-		BN_clear_free(data->grp->prime);
+		crypto_ec_deinit(data->grp->group);
+		crypto_ec_point_deinit(data->grp->pwe, 1);
 		os_free(data->grp);
 	}
 	wpabuf_free(data->inbuf);
@@ -198,9 +185,9 @@ static void eap_pwd_build_id_req(struct eap_sm *sm, struct eap_pwd_data *data,
 static void eap_pwd_build_commit_req(struct eap_sm *sm,
 				     struct eap_pwd_data *data, u8 id)
 {
-	BIGNUM *mask = NULL, *x = NULL, *y = NULL;
+	struct crypto_bignum *mask = NULL;
 	u8 *scalar = NULL, *element = NULL;
-	u16 offset;
+	size_t prime_len, order_len;
 
 	wpa_printf(MSG_DEBUG, "EAP-pwd: Commit/Request");
 	/*
@@ -210,93 +197,75 @@ static void eap_pwd_build_commit_req(struct eap_sm *sm,
 	if (data->out_frag_pos)
 		return;
 
-	if (((data->private_value = BN_new()) == NULL) ||
-	    ((data->my_element = EC_POINT_new(data->grp->group)) == NULL) ||
-	    ((data->my_scalar = BN_new()) == NULL) ||
-	    ((mask = BN_new()) == NULL)) {
+	prime_len = crypto_ec_prime_len(data->grp->group);
+	order_len = crypto_ec_order_len(data->grp->group);
+
+	data->private_value = crypto_bignum_init();
+	data->my_element = crypto_ec_point_init(data->grp->group);
+	data->my_scalar = crypto_bignum_init();
+	mask = crypto_bignum_init();
+	if (!data->private_value || !data->my_element || !data->my_scalar ||
+	    !mask) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): scalar allocation "
 			   "fail");
 		goto fin;
 	}
 
-	if (BN_rand_range(data->private_value, data->grp->order) != 1 ||
-	    BN_rand_range(mask, data->grp->order) != 1 ||
-	    BN_add(data->my_scalar, data->private_value, mask) != 1 ||
-	    BN_mod(data->my_scalar, data->my_scalar, data->grp->order,
-		   data->bnctx) != 1) {
+	if (crypto_bignum_rand(data->private_value,
+			       crypto_ec_get_order(data->grp->group)) < 0 ||
+	    crypto_bignum_rand(mask,
+			       crypto_ec_get_order(data->grp->group)) < 0 ||
+	    crypto_bignum_add(data->private_value, mask, data->my_scalar) < 0 ||
+	    crypto_bignum_mod(data->my_scalar,
+			      crypto_ec_get_order(data->grp->group),
+			      data->my_scalar) < 0) {
 		wpa_printf(MSG_INFO,
 			   "EAP-pwd (server): unable to get randomness");
 		goto fin;
 	}
 
-	if (!EC_POINT_mul(data->grp->group, data->my_element, NULL,
-			  data->grp->pwe, mask, data->bnctx)) {
+	if (crypto_ec_point_mul(data->grp->group, data->grp->pwe, mask,
+				data->my_element) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): element allocation "
 			   "fail");
 		eap_pwd_state(data, FAILURE);
 		goto fin;
 	}
 
-	if (!EC_POINT_invert(data->grp->group, data->my_element, data->bnctx))
-	{
+	if (crypto_ec_point_invert(data->grp->group, data->my_element) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): element inversion "
 			   "fail");
 		goto fin;
 	}
-	BN_clear_free(mask);
 
-	if (((x = BN_new()) == NULL) ||
-	    ((y = BN_new()) == NULL)) {
-		wpa_printf(MSG_INFO, "EAP-PWD (server): point allocation "
-			   "fail");
+	scalar = os_malloc(order_len);
+	element = os_malloc(prime_len * 2);
+	if (!scalar || !element) {
+		wpa_printf(MSG_INFO, "EAP-PWD (server): data allocation fail");
 		goto fin;
 	}
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group,
-						 data->my_element, x, y,
-						 data->bnctx)) {
+
+	if (crypto_ec_point_to_bin(data->grp->group, data->my_element, element,
+				   element + prime_len) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): point assignment "
 			   "fail");
 		goto fin;
 	}
 
-	if (((scalar = os_malloc(BN_num_bytes(data->grp->order))) == NULL) ||
-	    ((element = os_malloc(BN_num_bytes(data->grp->prime) * 2)) ==
-	     NULL)) {
-		wpa_printf(MSG_INFO, "EAP-PWD (server): data allocation fail");
-		goto fin;
-	}
+	crypto_bignum_to_bin(data->my_scalar, scalar, order_len, order_len);
 
-	/*
-	 * bignums occupy as little memory as possible so one that is
-	 * sufficiently smaller than the prime or order might need pre-pending
-	 * with zeros.
-	 */
-	os_memset(scalar, 0, BN_num_bytes(data->grp->order));
-	os_memset(element, 0, BN_num_bytes(data->grp->prime) * 2);
-	offset = BN_num_bytes(data->grp->order) -
-		BN_num_bytes(data->my_scalar);
-	BN_bn2bin(data->my_scalar, scalar + offset);
-
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(x);
-	BN_bn2bin(x, element + offset);
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(y);
-	BN_bn2bin(y, element + BN_num_bytes(data->grp->prime) + offset);
-
-	data->outbuf = wpabuf_alloc(2 * BN_num_bytes(data->grp->prime) +
-				    BN_num_bytes(data->grp->order));
+	data->outbuf = wpabuf_alloc(2 * prime_len + order_len);
 	if (data->outbuf == NULL)
 		goto fin;
 
 	/* We send the element as (x,y) followed by the scalar */
-	wpabuf_put_data(data->outbuf, element,
-			2 * BN_num_bytes(data->grp->prime));
-	wpabuf_put_data(data->outbuf, scalar, BN_num_bytes(data->grp->order));
+	wpabuf_put_data(data->outbuf, element, 2 * prime_len);
+	wpabuf_put_data(data->outbuf, scalar, order_len);
 
 fin:
+	crypto_bignum_deinit(mask, 1);
 	os_free(scalar);
 	os_free(element);
-	BN_clear_free(x);
-	BN_clear_free(y);
 	if (data->outbuf == NULL)
 		eap_pwd_state(data, FAILURE);
 }
@@ -305,11 +274,10 @@ fin:
 static void eap_pwd_build_confirm_req(struct eap_sm *sm,
 				      struct eap_pwd_data *data, u8 id)
 {
-	BIGNUM *x = NULL, *y = NULL;
 	struct crypto_hash *hash;
 	u8 conf[SHA256_MAC_LEN], *cruft = NULL, *ptr;
 	u16 grp;
-	int offset;
+	size_t prime_len, order_len;
 
 	wpa_printf(MSG_DEBUG, "EAP-pwd: Confirm/Request");
 	/*
@@ -319,9 +287,12 @@ static void eap_pwd_build_confirm_req(struct eap_sm *sm,
 	if (data->out_frag_pos)
 		return;
 
+	prime_len = crypto_ec_prime_len(data->grp->group);
+	order_len = crypto_ec_order_len(data->grp->group);
+
 	/* Each component of the cruft will be at most as big as the prime */
-	if (((cruft = os_malloc(BN_num_bytes(data->grp->prime))) == NULL) ||
-	    ((x = BN_new()) == NULL) || ((y = BN_new()) == NULL)) {
+	cruft = os_malloc(prime_len * 2);
+	if (!cruft) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): debug allocation "
 			   "fail");
 		goto fin;
@@ -341,64 +312,38 @@ static void eap_pwd_build_confirm_req(struct eap_sm *sm,
 	 *
 	 * First is k
 	 */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(data->k);
-	BN_bn2bin(data->k, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	crypto_bignum_to_bin(data->k, cruft, prime_len, prime_len);
+	eap_pwd_h_update(hash, cruft, prime_len);
 
 	/* server element: x, y */
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group,
-						 data->my_element, x, y,
-						 data->bnctx)) {
+	if (crypto_ec_point_to_bin(data->grp->group, data->my_element, cruft,
+				   cruft + prime_len) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): confirm point "
 			   "assignment fail");
 		goto fin;
 	}
-
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(x);
-	BN_bn2bin(x, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(y);
-	BN_bn2bin(y, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	eap_pwd_h_update(hash, cruft, prime_len * 2);
 
 	/* server scalar */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->order) -
-		BN_num_bytes(data->my_scalar);
-	BN_bn2bin(data->my_scalar, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->order));
+	crypto_bignum_to_bin(data->my_scalar, cruft, order_len, order_len);
+	eap_pwd_h_update(hash, cruft, order_len);
 
 	/* peer element: x, y */
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group,
-						 data->peer_element, x, y,
-						 data->bnctx)) {
+	if (crypto_ec_point_to_bin(data->grp->group, data->peer_element, cruft,
+				   cruft + prime_len) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): confirm point "
 			   "assignment fail");
 		goto fin;
 	}
-
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(x);
-	BN_bn2bin(x, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(y);
-	BN_bn2bin(y, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	eap_pwd_h_update(hash, cruft, prime_len * 2);
 
 	/* peer scalar */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->order) -
-		BN_num_bytes(data->peer_scalar);
-	BN_bn2bin(data->peer_scalar, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->order));
+	crypto_bignum_to_bin(data->peer_scalar, cruft, order_len, order_len);
+	eap_pwd_h_update(hash, cruft, order_len);
 
 	/* ciphersuite */
 	grp = htons(data->group_num);
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
+	os_memset(cruft, 0, prime_len);
 	ptr = cruft;
 	os_memcpy(ptr, &grp, sizeof(u16));
 	ptr += sizeof(u16);
@@ -419,9 +364,7 @@ static void eap_pwd_build_confirm_req(struct eap_sm *sm,
 	wpabuf_put_data(data->outbuf, conf, SHA256_MAC_LEN);
 
 fin:
-	bin_clear_free(cruft, BN_num_bytes(data->grp->prime));
-	BN_clear_free(x);
-	BN_clear_free(y);
+	bin_clear_free(cruft, prime_len * 2);
 	if (data->outbuf == NULL)
 		eap_pwd_state(data, FAILURE);
 }
@@ -649,7 +592,7 @@ static void eap_pwd_process_id_resp(struct eap_sm *sm,
 		return;
 	}
 	wpa_printf(MSG_DEBUG, "EAP-PWD (server): computed %d bit PWE...",
-		   BN_num_bits(data->grp->prime));
+		   (int) crypto_ec_prime_len_bits(data->grp->group));
 
 	eap_pwd_state(data, PWD_Commit_Req);
 }
@@ -659,16 +602,16 @@ static void
 eap_pwd_process_commit_resp(struct eap_sm *sm, struct eap_pwd_data *data,
 			    const u8 *payload, size_t payload_len)
 {
-	u8 *ptr;
-	BIGNUM *x = NULL, *y = NULL, *cofactor = NULL;
-	EC_POINT *K = NULL, *point = NULL;
+	const u8 *ptr;
+	struct crypto_bignum *cofactor = NULL;
+	struct crypto_ec_point *K = NULL, *point = NULL;
 	int res = 0;
 	size_t prime_len, order_len;
 
 	wpa_printf(MSG_DEBUG, "EAP-pwd: Received commit response");
 
-	prime_len = BN_num_bytes(data->grp->prime);
-	order_len = BN_num_bytes(data->grp->order);
+	prime_len = crypto_ec_prime_len(data->grp->group);
+	order_len = crypto_ec_order_len(data->grp->group);
 
 	if (payload_len != 2 * prime_len + order_len) {
 		wpa_printf(MSG_INFO,
@@ -678,49 +621,47 @@ eap_pwd_process_commit_resp(struct eap_sm *sm, struct eap_pwd_data *data,
 		goto fin;
 	}
 
-	if (((data->peer_scalar = BN_new()) == NULL) ||
-	    ((data->k = BN_new()) == NULL) ||
-	    ((cofactor = BN_new()) == NULL) ||
-	    ((x = BN_new()) == NULL) ||
-	    ((y = BN_new()) == NULL) ||
-	    ((point = EC_POINT_new(data->grp->group)) == NULL) ||
-	    ((K = EC_POINT_new(data->grp->group)) == NULL) ||
-	    ((data->peer_element = EC_POINT_new(data->grp->group)) == NULL)) {
+	data->k = crypto_bignum_init();
+	cofactor = crypto_bignum_init();
+	point = crypto_ec_point_init(data->grp->group);
+	K = crypto_ec_point_init(data->grp->group);
+	if (!data->k || !cofactor || !point || !K) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): peer data allocation "
 			   "fail");
 		goto fin;
 	}
 
-	if (!EC_GROUP_get_cofactor(data->grp->group, cofactor, NULL)) {
+	if (crypto_ec_cofactor(data->grp->group, cofactor) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): unable to get "
 			   "cofactor for curve");
 		goto fin;
 	}
 
 	/* element, x then y, followed by scalar */
-	ptr = (u8 *) payload;
-	BN_bin2bn(ptr, BN_num_bytes(data->grp->prime), x);
-	ptr += BN_num_bytes(data->grp->prime);
-	BN_bin2bn(ptr, BN_num_bytes(data->grp->prime), y);
-	ptr += BN_num_bytes(data->grp->prime);
-	BN_bin2bn(ptr, BN_num_bytes(data->grp->order), data->peer_scalar);
-	if (!EC_POINT_set_affine_coordinates_GFp(data->grp->group,
-						 data->peer_element, x, y,
-						 data->bnctx)) {
+	ptr = payload;
+	data->peer_element = crypto_ec_point_from_bin(data->grp->group, ptr);
+	if (!data->peer_element) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): setting peer element "
 			   "fail");
 		goto fin;
 	}
+	ptr += prime_len * 2;
+	data->peer_scalar = crypto_bignum_init_set(ptr, order_len);
+	if (!data->peer_scalar) {
+		wpa_printf(MSG_INFO, "EAP-PWD (server): peer data allocation "
+			   "fail");
+		goto fin;
+	}
 
 	/* check to ensure peer's element is not in a small sub-group */
-	if (BN_cmp(cofactor, BN_value_one())) {
-		if (!EC_POINT_mul(data->grp->group, point, NULL,
-				  data->peer_element, cofactor, NULL)) {
+	if (!crypto_bignum_is_one(cofactor)) {
+		if (crypto_ec_point_mul(data->grp->group, data->peer_element,
+					cofactor, point) != 0) {
 			wpa_printf(MSG_INFO, "EAP-PWD (server): cannot "
 				   "multiply peer element by order");
 			goto fin;
 		}
-		if (EC_POINT_is_at_infinity(data->grp->group, point)) {
+		if (crypto_ec_point_is_at_infinity(data->grp->group, point)) {
 			wpa_printf(MSG_INFO, "EAP-PWD (server): peer element "
 				   "is at infinity!\n");
 			goto fin;
@@ -728,21 +669,21 @@ eap_pwd_process_commit_resp(struct eap_sm *sm, struct eap_pwd_data *data,
 	}
 
 	/* compute the shared key, k */
-	if ((!EC_POINT_mul(data->grp->group, K, NULL, data->grp->pwe,
-			   data->peer_scalar, data->bnctx)) ||
-	    (!EC_POINT_add(data->grp->group, K, K, data->peer_element,
-			   data->bnctx)) ||
-	    (!EC_POINT_mul(data->grp->group, K, NULL, K, data->private_value,
-			   data->bnctx))) {
+	if ((crypto_ec_point_mul(data->grp->group, data->grp->pwe,
+				 data->peer_scalar, K) < 0) ||
+	    (crypto_ec_point_add(data->grp->group, K, data->peer_element,
+				 K) < 0) ||
+	    (crypto_ec_point_mul(data->grp->group, K, data->private_value,
+				 K) < 0)) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): computing shared key "
 			   "fail");
 		goto fin;
 	}
 
 	/* ensure that the shared key isn't in a small sub-group */
-	if (BN_cmp(cofactor, BN_value_one())) {
-		if (!EC_POINT_mul(data->grp->group, K, NULL, K, cofactor,
-				  NULL)) {
+	if (!crypto_bignum_is_one(cofactor)) {
+		if (crypto_ec_point_mul(data->grp->group, K, cofactor,
+					K) != 0) {
 			wpa_printf(MSG_INFO, "EAP-PWD (server): cannot "
 				   "multiply shared key point by order!\n");
 			goto fin;
@@ -755,13 +696,12 @@ eap_pwd_process_commit_resp(struct eap_sm *sm, struct eap_pwd_data *data,
 	 * never going to happen it is a simple and safe check "just to be
 	 * sure" so let's be safe.
 	 */
-	if (EC_POINT_is_at_infinity(data->grp->group, K)) {
+	if (crypto_ec_point_is_at_infinity(data->grp->group, K)) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): shared key point is "
 			   "at infinity");
 		goto fin;
 	}
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group, K, data->k,
-						 NULL, data->bnctx)) {
+	if (crypto_ec_point_x(data->grp->group, K, data->k)) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): unable to extract "
 			   "shared secret from secret point");
 		goto fin;
@@ -769,11 +709,9 @@ eap_pwd_process_commit_resp(struct eap_sm *sm, struct eap_pwd_data *data,
 	res = 1;
 
 fin:
-	EC_POINT_clear_free(K);
-	EC_POINT_clear_free(point);
-	BN_clear_free(cofactor);
-	BN_clear_free(x);
-	BN_clear_free(y);
+	crypto_ec_point_deinit(K, 1);
+	crypto_ec_point_deinit(point, 1);
+	crypto_bignum_deinit(cofactor, 1);
 
 	if (res)
 		eap_pwd_state(data, PWD_Confirm_Req);
@@ -786,12 +724,14 @@ static void
 eap_pwd_process_confirm_resp(struct eap_sm *sm, struct eap_pwd_data *data,
 			     const u8 *payload, size_t payload_len)
 {
-	BIGNUM *x = NULL, *y = NULL;
 	struct crypto_hash *hash;
 	u32 cs;
 	u16 grp;
 	u8 conf[SHA256_MAC_LEN], *cruft = NULL, *ptr;
-	int offset;
+	size_t prime_len, order_len;
+
+	prime_len = crypto_ec_prime_len(data->grp->group);
+	order_len = crypto_ec_order_len(data->grp->group);
 
 	if (payload_len != SHA256_MAC_LEN) {
 		wpa_printf(MSG_INFO,
@@ -810,8 +750,8 @@ eap_pwd_process_confirm_resp(struct eap_sm *sm, struct eap_pwd_data *data,
 	*ptr = EAP_PWD_DEFAULT_PRF;
 
 	/* each component of the cruft will be at most as big as the prime */
-	if (((cruft = os_malloc(BN_num_bytes(data->grp->prime))) == NULL) ||
-	    ((x = BN_new()) == NULL) || ((y = BN_new()) == NULL)) {
+	cruft = os_malloc(prime_len * 2);
+	if (!cruft) {
 		wpa_printf(MSG_INFO, "EAP-PWD (peer): allocation fail");
 		goto fin;
 	}
@@ -825,62 +765,36 @@ eap_pwd_process_confirm_resp(struct eap_sm *sm, struct eap_pwd_data *data,
 		goto fin;
 
 	/* k */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(data->k);
-	BN_bn2bin(data->k, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	crypto_bignum_to_bin(data->k, cruft, prime_len, prime_len);
+	eap_pwd_h_update(hash, cruft, prime_len);
 
 	/* peer element: x, y */
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group,
-						 data->peer_element, x, y,
-						 data->bnctx)) {
+	if (crypto_ec_point_to_bin(data->grp->group, data->peer_element, cruft,
+				   cruft + prime_len) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): confirm point "
 			   "assignment fail");
 		goto fin;
 	}
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(x);
-	BN_bn2bin(x, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(y);
-	BN_bn2bin(y, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	eap_pwd_h_update(hash, cruft, prime_len * 2);
 
 	/* peer scalar */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->order) -
-		BN_num_bytes(data->peer_scalar);
-	BN_bn2bin(data->peer_scalar, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->order));
+	crypto_bignum_to_bin(data->peer_scalar, cruft, order_len, order_len);
+	eap_pwd_h_update(hash, cruft, order_len);
 
 	/* server element: x, y */
-	if (!EC_POINT_get_affine_coordinates_GFp(data->grp->group,
-						 data->my_element, x, y,
-						 data->bnctx)) {
+	if (crypto_ec_point_to_bin(data->grp->group, data->my_element, cruft,
+				   cruft + prime_len) < 0) {
 		wpa_printf(MSG_INFO, "EAP-PWD (server): confirm point "
 			   "assignment fail");
 		goto fin;
 	}
-
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(x);
-	BN_bn2bin(x, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->prime) - BN_num_bytes(y);
-	BN_bn2bin(y, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->prime));
+	eap_pwd_h_update(hash, cruft, prime_len * 2);
 
 	/* server scalar */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
-	offset = BN_num_bytes(data->grp->order) -
-		BN_num_bytes(data->my_scalar);
-	BN_bn2bin(data->my_scalar, cruft + offset);
-	eap_pwd_h_update(hash, cruft, BN_num_bytes(data->grp->order));
+	crypto_bignum_to_bin(data->my_scalar, cruft, order_len, order_len);
+	eap_pwd_h_update(hash, cruft, order_len);
 
 	/* ciphersuite */
-	os_memset(cruft, 0, BN_num_bytes(data->grp->prime));
 	eap_pwd_h_update(hash, (u8 *) &cs, sizeof(u32));
 
 	/* all done */
@@ -894,7 +808,7 @@ eap_pwd_process_confirm_resp(struct eap_sm *sm, struct eap_pwd_data *data,
 	}
 
 	wpa_printf(MSG_DEBUG, "EAP-pwd (server): confirm verified");
-	if (compute_keys(data->grp, data->bnctx, data->k,
+	if (compute_keys(data->grp, data->k,
 			 data->peer_scalar, data->my_scalar, conf,
 			 data->my_confirm, &cs, data->msk, data->emsk,
 			 data->session_id) < 0)
@@ -903,9 +817,7 @@ eap_pwd_process_confirm_resp(struct eap_sm *sm, struct eap_pwd_data *data,
 		eap_pwd_state(data, SUCCESS);
 
 fin:
-	bin_clear_free(cruft, BN_num_bytes(data->grp->prime));
-	BN_clear_free(x);
-	BN_clear_free(y);
+	bin_clear_free(cruft, prime_len * 2);
 }
 
 

wpa_supplicant/Android.mk

@@ -684,6 +684,7 @@ L_CFLAGS += -DEAP_PWD
 OBJS += src/eap_peer/eap_pwd.c src/eap_common/eap_pwd_common.c
 CONFIG_IEEE8021X_EAPOL=y
 NEED_SHA256=y
+NEED_ECC=y
 endif
 
 ifdef CONFIG_EAP_EKE

wpa_supplicant/Makefile

@@ -712,6 +712,7 @@ CFLAGS += -DEAP_PWD
 OBJS += ../src/eap_peer/eap_pwd.o ../src/eap_common/eap_pwd_common.o
 CONFIG_IEEE8021X_EAPOL=y
 NEED_SHA256=y
+NEED_ECC=y
 endif
 
 ifdef CONFIG_EAP_EKE