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OpenSSL: Use EVP_Digest*() functions

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Instead of using low level, digest-specific functions, use the generic
EVP interface for digest functions. In addition, report OpenSSL errors
in more detail.
This commit is contained in:
Jouni Malinen 2009-08-16 14:12:06 +03:00
parent 0a5d68aba5
commit 4b77bf2a40
1 changed files with 35 additions and 36 deletions
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71
src/crypto/crypto_openssl.c
View file

@ -14,9 +14,7 @@
#include "includes.h"
#include <openssl/opensslv.h>
#include <openssl/md4.h>
#include <openssl/md5.h>
#include <openssl/sha.h>
#include <openssl/err.h>
#include <openssl/des.h>
#include <openssl/aes.h>
#include <openssl/bn.h>
@ -34,19 +32,40 @@
#endif /* openssl < 0.9.7 */
int openssl_digest_vector(const EVP_MD *type, size_t num_elem,
const u8 *addr[], const size_t *len, u8 *mac)
{
EVP_MD_CTX ctx;
size_t i;
unsigned int mac_len;
EVP_MD_CTX_init(&ctx);
if (!EVP_DigestInit_ex(&ctx, type, NULL)) {
wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestInit_ex failed: %s",
ERR_error_string(ERR_get_error(), NULL));
return -1;
}
for (i = 0; i < num_elem; i++) {
if (!EVP_DigestUpdate(&ctx, addr[i], len[i])) {
wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestUpdate "
"failed: %s",
ERR_error_string(ERR_get_error(), NULL));
return -1;
}
}
if (!EVP_DigestFinal(&ctx, mac, &mac_len)) {
wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestFinal failed: %s",
ERR_error_string(ERR_get_error(), NULL));
return -1;
}
return 0;
}
int md4_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
{
MD4_CTX ctx;
size_t i;
if (!MD4_Init(&ctx))
return -1;
for (i = 0; i < num_elem; i++)
if (!MD4_Update(&ctx, addr[i], len[i]))
return -1;
if (!MD4_Final(mac, &ctx))
return -1;
return 0;
return openssl_digest_vector(EVP_md4(), num_elem, addr, len, mac);
}
@ -73,33 +92,13 @@ void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
int md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
{
MD5_CTX ctx;
size_t i;
if (!MD5_Init(&ctx))
return -1;
for (i = 0; i < num_elem; i++)
if (!MD5_Update(&ctx, addr[i], len[i]))
return -1;
if (!MD5_Final(mac, &ctx))
return -1;
return 0;
return openssl_digest_vector(EVP_md5(), num_elem, addr, len, mac);
}
int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
{
SHA_CTX ctx;
size_t i;
if (!SHA1_Init(&ctx))
return -1;
for (i = 0; i < num_elem; i++)
if (!SHA1_Update(&ctx, addr[i], len[i]))
return -1;
if (!SHA1_Final(mac, &ctx))
return -1;
return 0;
return openssl_digest_vector(EVP_sha1(), num_elem, addr, len, mac);
}