Add TLS exporter.

[openssl.git] / apps / s_server.c

diff --git a/apps/s_server.c b/apps/s_server.c
index 14cffa6fa9e36649bc501147d8158b05f4f7ca4c..e89b888888bf6bfc8dd642d1d03212e36cebc485 100644 (file)
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -293,6 +293,9 @@ static int cert_status_cb(SSL *s, void *arg);
 static int s_msg=0;
 static int s_quiet=0;
 
+static char *keymatexportlabel=NULL;
+static int keymatexportlen=20;
+
 static int hack=0;
 #ifndef OPENSSL_NO_ENGINE
 static char *engine_id=NULL;
@@ -543,6 +546,8 @@ static void sv_usage(void)
 # endif
         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list");
 #endif
+       BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
+       BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
        }
 
 static int local_argc=0;
@@ -1315,6 +1320,17 @@ int MAIN(int argc, char *argv[])
                        if (--argc < 1) goto bad;
                        srtp_profiles = *(++argv);
                        }
+               else if (strcmp(*argv,"-keymatexport") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       keymatexportlabel= *(++argv);
+                       }
+               else if (strcmp(*argv,"-keymatexportlen") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       keymatexportlen=atoi(*(++argv));
+                       if (keymatexportlen == 0) goto bad;
+                       }
                else
                        {
                        BIO_printf(bio_err,"unknown option %s\n",*argv);
@@ -2324,6 +2340,8 @@ static int init_ssl_connection(SSL *con)
        const unsigned char *next_proto_neg;
        unsigned next_proto_neg_len;
 #endif
+       unsigned char *exportedkeymat;
+
 
        if ((i=SSL_accept(con)) <= 0)
                {
@@ -2395,6 +2413,32 @@ static int init_ssl_connection(SSL *con)
 #endif /* OPENSSL_NO_KRB5 */
        BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n",
                      SSL_get_secure_renegotiation_support(con) ? "" : " NOT");
+       if (keymatexportlabel != NULL) {
+               BIO_printf(bio_s_out, "Keying material exporter:\n");
+               BIO_printf(bio_s_out, "    Label: '%s'\n", keymatexportlabel);
+               BIO_printf(bio_s_out, "    Length: %i bytes\n",
+                          keymatexportlen);
+               exportedkeymat = OPENSSL_malloc(keymatexportlen);
+               if (exportedkeymat != NULL) {
+                       i = SSL_export_keying_material(con, exportedkeymat,
+                                                      keymatexportlen,
+                                                      keymatexportlabel,
+                                                    strlen(keymatexportlabel),
+                                                      NULL, 0, 0);
+                       if (i != keymatexportlen) {
+                               BIO_printf(bio_s_out,
+                                          "    Error: return value %i\n", i);
+                       } else {
+                               BIO_printf(bio_s_out, "    Keying material: ");
+                               for (i=0; i<keymatexportlen; i++)
+                                       BIO_printf(bio_s_out, "%02X",
+                                                  exportedkeymat[i]);
+                               BIO_printf(bio_s_out, "\n");
+                       }
+                       OPENSSL_free(exportedkeymat);
+               }
+       }
+
        return(1);
        }