Add TLS exporter.

[openssl.git] / apps / s_server.c

diff --git a/apps/s_server.c b/apps/s_server.c
index e462c9951a3fd23938b10dfdec8ceee3aefce2a1..59e16ec34845d3239a5fa968dee27aa62d9f4004 100644 (file)
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -297,6 +297,9 @@ static int no_resume_ephemeral = 0;
 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;
@@ -548,6 +551,8 @@ 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;
@@ -1332,6 +1337,17 @@ 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);
@@ -2354,6 +2370,8 @@ static int init_ssl_connection(SSL *con)
 #ifndef OPENSSL_NO_KRB5
        char *client_princ;
 #endif
+       unsigned char *exportedkeymat;
+
 
        if ((i=SSL_accept(con)) <= 0)
                {
@@ -2425,6 +2443,32 @@ 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);
        }