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OpenSSL: Implement SHA1 HMAC functions using HMAC API

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Use the OpenSSL HMAC implementation instead of the internal sha1.c
implementation of HMAC with SHA1.

Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2012-08-16 20:38:25 +03:00
parent d6150094e0
commit 030d062fac
5 changed files with 47 additions and 0 deletions
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2
hostapd/Android.mk
View file

@ -669,7 +669,9 @@ endif
SHA1OBJS =
ifdef NEED_SHA1
ifneq ($(CONFIG_TLS), openssl)
SHA1OBJS += src/crypto/sha1.c
endif
SHA1OBJS += src/crypto/sha1-prf.c
ifdef CONFIG_INTERNAL_SHA1
SHA1OBJS += src/crypto/sha1-internal.c

2
hostapd/Makefile
View file

@ -660,7 +660,9 @@ OBJS += $(AESOBJS)
endif
ifdef NEED_SHA1
ifneq ($(CONFIG_TLS), openssl)
SHA1OBJS += ../src/crypto/sha1.o
endif
SHA1OBJS += ../src/crypto/sha1-prf.o
ifdef CONFIG_INTERNAL_SHA1
SHA1OBJS += ../src/crypto/sha1-internal.o

39
src/crypto/crypto_openssl.c
View file

@ -698,3 +698,42 @@ int pbkdf2_sha1(const char *passphrase, const u8 *ssid, size_t ssid_len,
return -1;
return 0;
}
int hmac_sha1_vector(const u8 *key, size_t key_len, size_t num_elem,
const u8 *addr[], const size_t *len, u8 *mac)
{
HMAC_CTX ctx;
size_t i;
unsigned int mdlen;
int res;
HMAC_CTX_init(&ctx);
#if OPENSSL_VERSION_NUMBER < 0x00909000
HMAC_Init_ex(&ctx, key, key_len, EVP_sha1(), NULL);
#else /* openssl < 0.9.9 */
if (HMAC_Init_ex(&ctx, key, key_len, EVP_sha1(), NULL) != 1)
return -1;
#endif /* openssl < 0.9.9 */
for (i = 0; i < num_elem; i++)
HMAC_Update(&ctx, addr[i], len[i]);
mdlen = 20;
#if OPENSSL_VERSION_NUMBER < 0x00909000
HMAC_Final(&ctx, mac, &mdlen);
res = 1;
#else /* openssl < 0.9.9 */
res = HMAC_Final(&ctx, mac, &mdlen);
#endif /* openssl < 0.9.9 */
HMAC_CTX_cleanup(&ctx);
return res == 1 ? 0 : -1;
}
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);
}

2
wpa_supplicant/Android.mk
View file

@ -1054,7 +1054,9 @@ endif
SHA1OBJS =
ifdef NEED_SHA1
ifneq ($(CONFIG_TLS), openssl)
SHA1OBJS += src/crypto/sha1.c
endif
SHA1OBJS += src/crypto/sha1-prf.c
ifdef CONFIG_INTERNAL_SHA1
SHA1OBJS += src/crypto/sha1-internal.c

2
wpa_supplicant/Makefile
View file

@ -1081,7 +1081,9 @@ OBJS += $(AESOBJS)
endif
ifdef NEED_SHA1
ifneq ($(CONFIG_TLS), openssl)
SHA1OBJS += ../src/crypto/sha1.o
endif
SHA1OBJS += ../src/crypto/sha1-prf.o
ifdef CONFIG_INTERNAL_SHA1
SHA1OBJS += ../src/crypto/sha1-internal.o