Vicarious (sp?) changes to try to fix -k option

1 files changed, 75 insertions, 0 deletions

diff --git a/fingerprint.c b/fingerprint.c
new file mode 100644
index 00000000..6fdbd911
--- /dev/null
+++ b/fingerprint.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 1999 Markus Friedl.  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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Markus Friedl.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#include "includes.h"
+RCSID("$Id: fingerprint.c,v 1.4 1999/11/24 16:15:25 markus Exp $");
+
+
+#include "ssh.h"
+#include "xmalloc.h"
+#ifdef HAVE_OPENSSL
+#include <openssl/md5.h>
+#endif
+#ifdef HAVE_SSL
+#include <ssl/md5.h>
+#endif
+
+#define FPRINT "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x"
+
+/*
+ * Generate key fingerprint in ascii format.
+ * Based on ideas and code from Bjoern Groenvall <bg@sics.se>
+ */
+char *
+fingerprint(BIGNUM *e, BIGNUM *n)
+{
+	static char retval[80];
+	MD5_CTX md;
+	unsigned char d[16];
+	char *buf;
+	int nlen, elen;
+
+	nlen = BN_num_bytes(n);
+	elen = BN_num_bytes(e);
+
+	buf = xmalloc(nlen + elen);
+
+	BN_bn2bin(n, buf);
+	BN_bn2bin(e, buf + nlen);
+
+	MD5_Init(&md);
+	MD5_Update(&md, buf, nlen + elen);
+	MD5_Final(d, &md);
+	snprintf(retval, sizeof(retval), FPRINT,
+	    d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7],
+	    d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15]);
+	memset(buf, 0, nlen + elen);
+	xfree(buf);
+	return retval;
+}