vendor/ssleay/des_051a

1 files changed, 107 insertions, 0 deletions

diff --git a/secure/lib/libdes/rand_key.c b/secure/lib/libdes/rand_key.c
new file mode 100644
index 000000000000..c4c4caaf95ca
--- /dev/null
+++ b/secure/lib/libdes/rand_key.c
@@ -0,0 +1,107 @@
+/* lib/des/rand_key.c */
+/* Copyright (C) 1995 Eric Young (eay@mincom.oz.au)
+ * All rights reserved.
+ * 
+ * This file is part of an SSL implementation written
+ * by Eric Young (eay@mincom.oz.au).
+ * The implementation was written so as to conform with Netscapes SSL
+ * specification.  This library and applications are
+ * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
+ * as long as the following conditions are aheared to.
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.  If this code is used in a product,
+ * Eric Young should be given attribution as the author of the parts used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * 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 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 Eric Young (eay@mincom.oz.au)
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 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.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include "des_locl.h"
+#include <time.h>
+
+static int seed=0;
+static des_cblock init;
+
+void des_random_seed(key)
+des_cblock key;
+	{
+	memcpy(init,key,sizeof(des_cblock));
+	seed=1;
+	}
+
+void des_random_key(ret)
+unsigned char *ret;
+	{
+	des_key_schedule ks;
+	static unsigned long c=0;
+	static unsigned short pid=0;
+	static des_cblock data={0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef};
+	des_cblock key;
+	unsigned char *p;
+	unsigned long t;
+	int i;
+
+#ifdef MSDOS
+	pid=1;
+#else
+	if (!pid) pid=getpid();
+#endif
+	p=key;
+	if (seed)
+		{
+		for (i=0; i<8; i++)
+			{
+			data[i] ^= init[i];
+			init[i]=0;
+			}
+		seed=0;
+		}
+	t=(unsigned long)time(NULL);
+	l2c(t,p);
+	t=(unsigned long)((pid)|((c++)<<16));
+	l2c(t,p);
+
+	des_set_odd_parity((des_cblock *)data);
+	des_set_key((des_cblock *)data,ks);
+	des_cbc_cksum((des_cblock *)key,(des_cblock *)key,
+		(long)sizeof(key),ks,(des_cblock *)data);
+
+	des_set_odd_parity((des_cblock *)key);
+	des_set_key((des_cblock *)key,ks);
+	des_cbc_cksum((des_cblock *)key,(des_cblock *)data,
+		(long)sizeof(key),ks,(des_cblock *)key);
+
+	memcpy(ret,data,sizeof(key));
+	memset(key,0,sizeof(key));
+	memset(ks,0,sizeof(ks));
+	t=0;
+	}