implement enough glue to support OpenSSLs EVP, RSA, DSA, DH, HMAC and ENGINE interfaces for use in hx509. rename all symbols to start with hc_ to avoid clobbering namespaces. contains no RSA/DH/DSA code, just glue to support using dynamic ENGINE. hx509 supports this via pkcs11 and there is a gmp ENGINE module supporting RSA

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@16480 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/des/rand.c

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2006 Kungliga Tekniska H<>gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ *
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+RCSID("$Id$");
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <rand.h>
+
+#include <roken.h>
+
+int
+RAND_bytes(void *outdata, size_t size)
+{
+    static const char *rnd_devices[] = {
+	"/dev/random",
+	"/dev/srandom",
+	"/dev/urandom",
+	"/dev/arandom",
+	NULL
+    };
+    const char **p;
+
+    for(p = rnd_devices; *p; p++) {
+	int fd = open(*p, O_RDONLY | O_NDELAY);
+      
+	if(fd >= 0 && read(fd, outdata, size) == size) {
+	    close(fd);
+	    return 1;
+	}
+	close(fd);
+    }
+
+    abort();
+}
+
+int
+RAND_pseudo_bytes(void *outdata, size_t num)
+{
+    return RAND_bytes(outdata, num);
+}
+