diff options
Diffstat (limited to 'src/openvpn/crypto_openssl.c')
| -rw-r--r-- | src/openvpn/crypto_openssl.c | 78 |
1 files changed, 56 insertions, 22 deletions
diff --git a/src/openvpn/crypto_openssl.c b/src/openvpn/crypto_openssl.c index b016d98..a55e65c 100644 --- a/src/openvpn/crypto_openssl.c +++ b/src/openvpn/crypto_openssl.c @@ -17,10 +17,9 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ /** @@ -42,6 +41,7 @@ #include "integer.h" #include "crypto.h" #include "crypto_backend.h" +#include "openssl_compat.h" #include <openssl/des.h> #include <openssl/err.h> @@ -186,14 +186,14 @@ crypto_clear_error(void) } void -crypto_print_openssl_errors(const unsigned int flags) { +crypto_print_openssl_errors(const unsigned int flags) +{ size_t err = 0; while ((err = ERR_get_error())) { /* Be more clear about frequently occurring "no shared cipher" error */ - if (err == ERR_PACK(ERR_LIB_SSL,SSL_F_SSL3_GET_CLIENT_HELLO, - SSL_R_NO_SHARED_CIPHER)) + if (ERR_GET_REASON(err) == SSL_R_NO_SHARED_CIPHER) { msg(D_CRYPT_ERRORS, "TLS error: The server has no TLS ciphersuites " "in common with the client. Your --tls-cipher setting might be " @@ -286,8 +286,7 @@ show_available_ciphers() size_t i; /* If we ever exceed this, we must be more selective */ - const size_t cipher_list_len = 1000; - const EVP_CIPHER *cipher_list[cipher_list_len]; + const EVP_CIPHER *cipher_list[1000]; size_t num_ciphers = 0; #ifndef ENABLE_SMALL printf("The following ciphers and cipher modes are available for use\n" @@ -312,7 +311,7 @@ show_available_ciphers() { cipher_list[num_ciphers++] = cipher; } - if (num_ciphers == cipher_list_len) + if (num_ciphers == (sizeof(cipher_list)/sizeof(*cipher_list))) { msg(M_WARN, "WARNING: Too many ciphers, not showing all"); break; @@ -551,8 +550,10 @@ cipher_kt_iv_size(const EVP_CIPHER *cipher_kt) } int -cipher_kt_block_size(const EVP_CIPHER *cipher) { - /* OpenSSL reports OFB/CFB/GCM cipher block sizes as '1 byte'. To work +cipher_kt_block_size(const EVP_CIPHER *cipher) +{ + /* + * OpenSSL reports OFB/CFB/GCM cipher block sizes as '1 byte'. To work * around that, try to replace the mode with 'CBC' and return the block size * reported for that cipher, if possible. If that doesn't work, just return * the value reported by OpenSSL. @@ -649,6 +650,19 @@ cipher_kt_mode_aead(const cipher_kt_t *cipher) * */ +cipher_ctx_t * +cipher_ctx_new(void) +{ + EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new(); + check_malloc_return(ctx); + return ctx; +} + +void +cipher_ctx_free(EVP_CIPHER_CTX *ctx) +{ + EVP_CIPHER_CTX_free(ctx); +} void cipher_ctx_init(EVP_CIPHER_CTX *ctx, uint8_t *key, int key_len, @@ -656,8 +670,6 @@ cipher_ctx_init(EVP_CIPHER_CTX *ctx, uint8_t *key, int key_len, { ASSERT(NULL != kt && NULL != ctx); - CLEAR(*ctx); - EVP_CIPHER_CTX_init(ctx); if (!EVP_CipherInit(ctx, kt, NULL, NULL, enc)) { @@ -669,7 +681,7 @@ cipher_ctx_init(EVP_CIPHER_CTX *ctx, uint8_t *key, int key_len, crypto_msg(M_FATAL, "EVP set key size"); } #endif - if (!EVP_CipherInit(ctx, NULL, key, NULL, enc)) + if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, enc)) { crypto_msg(M_FATAL, "EVP cipher init #2"); } @@ -722,7 +734,7 @@ cipher_ctx_get_cipher_kt(const cipher_ctx_t *ctx) int cipher_ctx_reset(EVP_CIPHER_CTX *ctx, uint8_t *iv_buf) { - return EVP_CipherInit(ctx, NULL, NULL, iv_buf, -1); + return EVP_CipherInit_ex(ctx, NULL, NULL, NULL, iv_buf, -1); } int @@ -843,13 +855,24 @@ md_full(const EVP_MD *kt, const uint8_t *src, int src_len, uint8_t *dst) return EVP_Digest(src, src_len, dst, &in_md_len, kt, NULL); } +EVP_MD_CTX * +md_ctx_new(void) +{ + EVP_MD_CTX *ctx = EVP_MD_CTX_new(); + check_malloc_return(ctx); + return ctx; +} + +void md_ctx_free(EVP_MD_CTX *ctx) +{ + EVP_MD_CTX_free(ctx); +} + void md_ctx_init(EVP_MD_CTX *ctx, const EVP_MD *kt) { ASSERT(NULL != ctx && NULL != kt); - CLEAR(*ctx); - EVP_MD_CTX_init(ctx); EVP_DigestInit(ctx, kt); } @@ -857,7 +880,7 @@ md_ctx_init(EVP_MD_CTX *ctx, const EVP_MD *kt) void md_ctx_cleanup(EVP_MD_CTX *ctx) { - EVP_MD_CTX_cleanup(ctx); + EVP_MD_CTX_reset(ctx); } int @@ -887,6 +910,19 @@ md_ctx_final(EVP_MD_CTX *ctx, uint8_t *dst) * */ +HMAC_CTX * +hmac_ctx_new(void) +{ + HMAC_CTX *ctx = HMAC_CTX_new(); + check_malloc_return(ctx); + return ctx; +} + +void +hmac_ctx_free(HMAC_CTX *ctx) +{ + HMAC_CTX_free(ctx); +} void hmac_ctx_init(HMAC_CTX *ctx, const uint8_t *key, int key_len, @@ -894,8 +930,6 @@ hmac_ctx_init(HMAC_CTX *ctx, const uint8_t *key, int key_len, { ASSERT(NULL != kt && NULL != ctx); - CLEAR(*ctx); - HMAC_CTX_init(ctx); HMAC_Init_ex(ctx, key, key_len, kt, NULL); @@ -906,7 +940,7 @@ hmac_ctx_init(HMAC_CTX *ctx, const uint8_t *key, int key_len, void hmac_ctx_cleanup(HMAC_CTX *ctx) { - HMAC_CTX_cleanup(ctx); + HMAC_CTX_reset(ctx); } int |