diff options
| author | Matt Caswell <matt@openssl.org> | 2020-03-13 23:51:28 +0000 |
|---|---|---|
| committer | Matt Caswell <matt@openssl.org> | 2020-03-24 16:13:59 +0000 |
| commit | 6f829f58effd958c75cb7bc3cf2781fbdae22b9b (patch) | |
| tree | 4b40d8d92bce25b337ea35abe5aadf37af223926 /ssl | |
| parent | abd86cecce06a2f56f2d0ccc4743273e5981d547 (diff) | |
Make sure we use a fetched cipher when encrypting stateless tickets
We use AES-256-CBC to encrypt stateless session tickets. We should
ensure that the implementation is fetched from the appropriate provider.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11356)
Diffstat (limited to 'ssl')
| -rw-r--r-- | ssl/statem/statem_srvr.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/ssl/statem/statem_srvr.c b/ssl/statem/statem_srvr.c index 1cc106876c..7ca76fc0fe 100644 --- a/ssl/statem/statem_srvr.c +++ b/ssl/statem/statem_srvr.c @@ -3906,7 +3906,14 @@ static int construct_stateless_ticket(SSL *s, WPACKET *pkt, uint32_t age_add, } iv_len = EVP_CIPHER_CTX_iv_length(ctx); } else { - const EVP_CIPHER *cipher = EVP_aes_256_cbc(); + EVP_CIPHER *cipher = EVP_CIPHER_fetch(s->ctx->libctx, "AES-256-CBC", + s->ctx->propq); + + if (cipher == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_CONSTRUCT_STATELESS_TICKET, + SSL_R_ALGORITHM_FETCH_FAILED); + goto err; + } iv_len = EVP_CIPHER_iv_length(cipher); if (RAND_bytes_ex(s->ctx->libctx, iv, iv_len) <= 0 @@ -3915,10 +3922,12 @@ static int construct_stateless_ticket(SSL *s, WPACKET *pkt, uint32_t age_add, || !ssl_hmac_init(hctx, tctx->ext.secure->tick_hmac_key, sizeof(tctx->ext.secure->tick_hmac_key), "SHA256")) { + EVP_CIPHER_free(cipher); SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_CONSTRUCT_STATELESS_TICKET, ERR_R_INTERNAL_ERROR); goto err; } + EVP_CIPHER_free(cipher); memcpy(key_name, tctx->ext.tick_key_name, sizeof(tctx->ext.tick_key_name)); } |