Changeset 4832 for pjproject/trunk/pjlib/src/pj/ssl_sock_ossl.c

Timestamp:

May 2, 2014 10:20:14 AM (11 years ago)

Author:

ming

Message:

Fixed #1765: Add PFS support

File:

• pjproject/trunk/pjlib/src/pj/ssl_sock_ossl.c (modified) (2 diffs)

pjproject/trunk/pjlib/src/pj/ssl_sock_ossl.c

@@ -488 +488 @@
 static pj_status_t create_ssl(pj_ssl_sock_t *ssock)
 {
+    BIO *bio;
+    DH *dh;
+    long options;
+    EC_KEY *ecdh;
     SSL_METHOD *ssl_method;
     SSL_CTX *ctx;
@@ -583 +587 @@
                 return status;
             }
+
+            bio = BIO_new_file(cert->privkey_file.ptr, "r");
+            if (bio != NULL) {
+                dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
+                if (dh != NULL) {
+                   if (SSL_CTX_set_tmp_dh(ctx, dh)) {
+                        options = SSL_OP_CIPHER_SERVER_PREFERENCE |
+                                  SSL_OP_SINGLE_DH_USE;
+                        options = SSL_CTX_set_options(ctx, options);
+                        PJ_LOG(4,(ssock->pool->obj_name, "SSL DH "
+                                  "initialized, PFS cipher-suites enabled"));
+                   }
+                   DH_free(dh);
+                }
+                BIO_free(bio);
+            }
+        }
+    }
+
+    #ifndef SSL_CTRL_SET_ECDH_AUTO
+        #define SSL_CTRL_SET_ECDH_AUTO 94
+    #endif
+    
+    /* SSL_CTX_set_ecdh_auto(ctx, on); requires OpenSSL 1.0.2 which wraps: */
+    if (SSL_CTX_ctrl(ctx, SSL_CTRL_SET_ECDH_AUTO, 1, NULL)) {
+        PJ_LOG(4,(ssock->pool->obj_name, "SSL ECDH initialized (automatic), "
+                  "faster PFS ciphers enabled"));
+    } else {
+        /* enables AES-128 ciphers, to get AES-256 use NID_secp384r1 */
+        ecdh = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
+        if (ecdh != NULL) {
+            if (SSL_CTX_set_tmp_ecdh(ctx, ecdh)) {
+                PJ_LOG(4,(ssock->pool->obj_name, "SSL ECDH initialized "
+                          "(secp256r1), faster PFS cipher-suites enabled"));
+            }
+            EC_KEY_free(ecdh);
         }
     }