Esempi in C++ (Cpp) per EVP_MD_CTX_ctrl

Esempio n. 1

File: s3_enc.c Progetto: super-ala/openssl

int ssl3_final_finish_mac(SSL *s, const char *sender, int len, unsigned char *p)
{
    int ret;
    EVP_MD_CTX ctx;

    if (!ssl3_digest_cached_records(s, 0))
        return 0;

    if (EVP_MD_CTX_type(s->s3->handshake_dgst) != NID_md5_sha1) {
        SSLerr(SSL_F_SSL3_HANDSHAKE_MAC, SSL_R_NO_REQUIRED_DIGEST);
        return 0;
    }

    EVP_MD_CTX_init(&ctx);
    EVP_MD_CTX_copy_ex(&ctx, s->s3->handshake_dgst);

    ret = EVP_MD_CTX_size(&ctx);
    if (ret < 0) {
        EVP_MD_CTX_cleanup(&ctx);
        return 0;
    }

    if ((sender != NULL && EVP_DigestUpdate(&ctx, sender, len) <= 0)
            || EVP_MD_CTX_ctrl(&ctx, EVP_CTRL_SSL3_MASTER_SECRET,
                               s->session->master_key_length,
                               s->session->master_key) <= 0
            || EVP_DigestFinal_ex(&ctx, p, NULL) <= 0) {
        SSLerr(SSL_F_SSL3_HANDSHAKE_MAC, ERR_R_INTERNAL_ERROR);
        ret = 0;
    }

    EVP_MD_CTX_cleanup(&ctx);

    return ret;
}

Esempio n. 2

File: s3_enc.c Progetto: matthauck/openssl

size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t len,
                             unsigned char *p)
{
    int ret;
    EVP_MD_CTX *ctx = NULL;

    if (!ssl3_digest_cached_records(s, 0)) {
        /* SSLfatal() already called */
        return 0;
    }

    if (EVP_MD_CTX_type(s->s3->handshake_dgst) != NID_md5_sha1) {
        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
                 SSL_R_NO_REQUIRED_DIGEST);
        return 0;
    }

    ctx = EVP_MD_CTX_new();
    if (ctx == NULL) {
        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
                 ERR_R_MALLOC_FAILURE);
        return 0;
    }
    if (!EVP_MD_CTX_copy_ex(ctx, s->s3->handshake_dgst)) {
        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
                 ERR_R_INTERNAL_ERROR);
        return 0;
    }

    ret = EVP_MD_CTX_size(ctx);
    if (ret < 0) {
        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
                 ERR_R_INTERNAL_ERROR);
        EVP_MD_CTX_reset(ctx);
        return 0;
    }

    if ((sender != NULL && EVP_DigestUpdate(ctx, sender, len) <= 0)
        || EVP_MD_CTX_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET,
                           (int)s->session->master_key_length,
                           s->session->master_key) <= 0
        || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) {
        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
                 ERR_R_INTERNAL_ERROR);
        ret = 0;
    }

    EVP_MD_CTX_free(ctx);

    return ret;
}