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SSL: factored out digest and cipher in session ticket callback.

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No functional changes.
This commit is contained in:
Sergey Kandaurov 2016-09-12 18:57:42 +03:00
parent d35f95c568
commit b39aa6148f
1 changed files with 14 additions and 14 deletions
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28
src/event/ngx_event_openssl.c
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@ -2941,13 +2941,6 @@ failed:
}
#ifdef OPENSSL_NO_SHA256
#define ngx_ssl_session_ticket_md EVP_sha1
#else
#define ngx_ssl_session_ticket_md EVP_sha256
#endif
static int
ngx_ssl_session_ticket_key_callback(ngx_ssl_conn_t *ssl_conn,
unsigned char *name, unsigned char *iv, EVP_CIPHER_CTX *ectx,
@ -2958,6 +2951,8 @@ ngx_ssl_session_ticket_key_callback(ngx_ssl_conn_t *ssl_conn,
ngx_array_t *keys;
ngx_connection_t *c;
ngx_ssl_session_ticket_key_t *key;
const EVP_MD *digest;
const EVP_CIPHER *cipher;
#if (NGX_DEBUG)
u_char buf[32];
#endif
@ -2965,6 +2960,13 @@ ngx_ssl_session_ticket_key_callback(ngx_ssl_conn_t *ssl_conn,
c = ngx_ssl_get_connection(ssl_conn);
ssl_ctx = c->ssl->session_ctx;
cipher = EVP_aes_128_cbc();
#ifdef OPENSSL_NO_SHA256
digest = EVP_sha1();
#else
digest = EVP_sha256();
#endif
keys = SSL_CTX_get_ex_data(ssl_ctx, ngx_ssl_session_ticket_keys_index);
if (keys == NULL) {
return -1;
@ -2980,10 +2982,9 @@ ngx_ssl_session_ticket_key_callback(ngx_ssl_conn_t *ssl_conn,
ngx_hex_dump(buf, key[0].name, 16) - buf, buf,
SSL_session_reused(ssl_conn) ? "reused" : "new");
RAND_bytes(iv, 16);
EVP_EncryptInit_ex(ectx, EVP_aes_128_cbc(), NULL, key[0].aes_key, iv);
HMAC_Init_ex(hctx, key[0].hmac_key, 16,
ngx_ssl_session_ticket_md(), NULL);
RAND_bytes(iv, EVP_CIPHER_iv_length(cipher));
EVP_EncryptInit_ex(ectx, cipher, NULL, key[0].aes_key, iv);
HMAC_Init_ex(hctx, key[0].hmac_key, 16, digest, NULL);
ngx_memcpy(name, key[0].name, 16);
return 1;
@ -3010,9 +3011,8 @@ ngx_ssl_session_ticket_key_callback(ngx_ssl_conn_t *ssl_conn,
ngx_hex_dump(buf, key[i].name, 16) - buf, buf,
(i == 0) ? " (default)" : "");
HMAC_Init_ex(hctx, key[i].hmac_key, 16,
ngx_ssl_session_ticket_md(), NULL);
EVP_DecryptInit_ex(ectx, EVP_aes_128_cbc(), NULL, key[i].aes_key, iv);
HMAC_Init_ex(hctx, key[i].hmac_key, 16, digest, NULL);
EVP_DecryptInit_ex(ectx, cipher, NULL, key[i].aes_key, iv);
return (i == 0) ? 1 : 2 /* renew */;
}