GnuTLS: Implement sha{256,384,512}_vector() using libgcrypt

Replace the internal SHA256 implementation with the one from libgcrypt
and also add the SHA384 and SHA512 versions.

Signed-off-by: Jouni Malinen <j@w1.fi>

hostapd/Android.mk

@@ -651,7 +651,6 @@ OBJS += src/crypto/sha1-internal.c
 endif
 LIBS += -lgcrypt
 LIBS_h += -lgcrypt
-CONFIG_INTERNAL_SHA256=y
 CONFIG_INTERNAL_RC4=y
 CONFIG_INTERNAL_DH_GROUP5=y
 endif

hostapd/Makefile

@@ -689,7 +689,6 @@ SHA1OBJS += ../src/crypto/sha1-internal.o
 endif
 LIBS += -lgcrypt
 LIBS_h += -lgcrypt
-CONFIG_INTERNAL_SHA256=y
 CONFIG_INTERNAL_RC4=y
 CONFIG_INTERNAL_DH_GROUP5=y
 endif

src/crypto/crypto_gnutls.c

@@ -1,6 +1,6 @@
 /*
  * WPA Supplicant / wrapper functions for libgcrypt
- * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi>
+ * 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.
@@ -72,6 +72,24 @@ int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
 }
 
 
+int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
+{
+	return gnutls_digest_vector(GCRY_MD_SHA256, num_elem, addr, len, mac);
+}
+
+
+int sha384_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
+{
+	return gnutls_digest_vector(GCRY_MD_SHA384, num_elem, addr, len, mac);
+}
+
+
+int sha512_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
+{
+	return gnutls_digest_vector(GCRY_MD_SHA512, num_elem, addr, len, mac);
+}
+
+
 void * aes_encrypt_init(const u8 *key, size_t len)
 {
 	gcry_cipher_hd_t hd;

wpa_supplicant/Android.mk

@@ -1051,7 +1051,6 @@ OBJS += src/crypto/sha1-internal.c
 endif
 LIBS += -lgcrypt
 LIBS_p += -lgcrypt
-CONFIG_INTERNAL_SHA256=y
 CONFIG_INTERNAL_RC4=y
 CONFIG_INTERNAL_DH_GROUP5=y
 endif

wpa_supplicant/Makefile

@@ -1095,7 +1095,6 @@ SHA1OBJS += ../src/crypto/sha1-internal.o
 endif
 LIBS += -lgcrypt
 LIBS_p += -lgcrypt
-CONFIG_INTERNAL_SHA256=y
 CONFIG_INTERNAL_RC4=y
 CONFIG_INTERNAL_DH_GROUP5=y
 endif