Import of old SSLeay release: SSLeay 0.8.1b

1 files changed, 171 insertions, 0 deletions

diff --git a/crypto/des/str2key.c b/crypto/des/str2key.c
new file mode 100644
index 0000000000..65a1184653
--- /dev/null
+++ b/crypto/des/str2key.c
@@ -0,0 +1,171 @@
+/* crypto/des/str2key.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library 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 cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * 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"
+
+extern int des_check_key;
+
+void des_string_to_key(str, key)
+char *str;
+des_cblock (*key);
+	{
+	des_key_schedule ks;
+	int i,length;
+	register unsigned char j;
+
+	memset(key,0,8);
+	length=strlen(str);
+#ifdef OLD_STR_TO_KEY
+	for (i=0; i<length; i++)
+		(*key)[i%8]^=(str[i]<<1);
+#else /* MIT COMPATIBLE */
+	for (i=0; i<length; i++)
+		{
+		j=str[i];
+		if ((i%16) < 8)
+			(*key)[i%8]^=(j<<1);
+		else
+			{
+			/* Reverse the bit order 05/05/92 eay */
+			j=((j<<4)&0xf0)|((j>>4)&0x0f);
+			j=((j<<2)&0xcc)|((j>>2)&0x33);
+			j=((j<<1)&0xaa)|((j>>1)&0x55);
+			(*key)[7-(i%8)]^=j;
+			}
+		}
+#endif
+	des_set_odd_parity((des_cblock *)key);
+	i=des_check_key;
+	des_check_key=0;
+	des_set_key((des_cblock *)key,ks);
+	des_check_key=i;
+	des_cbc_cksum((des_cblock *)str,(des_cblock *)key,(long)length,ks,
+		(des_cblock *)key);
+	memset(ks,0,sizeof(ks));
+	des_set_odd_parity((des_cblock *)key);
+	}
+
+void des_string_to_2keys(str, key1, key2)
+char *str;
+des_cblock (*key1);
+des_cblock (*key2);
+	{
+	des_key_schedule ks;
+	int i,length;
+	register unsigned char j;
+
+	memset(key1,0,8);
+	memset(key2,0,8);
+	length=strlen(str);
+#ifdef OLD_STR_TO_KEY
+	if (length <= 8)
+		{
+		for (i=0; i<length; i++)
+			{
+			(*key2)[i]=(*key1)[i]=(str[i]<<1);
+			}
+		}
+	else
+		{
+		for (i=0; i<length; i++)
+			{
+			if ((i/8)&1)
+				(*key2)[i%8]^=(str[i]<<1);
+			else
+				(*key1)[i%8]^=(str[i]<<1);
+			}
+		}
+#else /* MIT COMPATIBLE */
+	for (i=0; i<length; i++)
+		{
+		j=str[i];
+		if ((i%32) < 16)
+			{
+			if ((i%16) < 8)
+				(*key1)[i%8]^=(j<<1);
+			else
+				(*key2)[i%8]^=(j<<1);
+			}
+		else
+			{
+			j=((j<<4)&0xf0)|((j>>4)&0x0f);
+			j=((j<<2)&0xcc)|((j>>2)&0x33);
+			j=((j<<1)&0xaa)|((j>>1)&0x55);
+			if ((i%16) < 8)
+				(*key1)[7-(i%8)]^=j;
+			else
+				(*key2)[7-(i%8)]^=j;
+			}
+		}
+	if (length <= 8) memcpy(key2,key1,8);
+#endif
+	des_set_odd_parity((des_cblock *)key1);
+	des_set_odd_parity((des_cblock *)key2);
+	i=des_check_key;
+	des_check_key=0;
+	des_set_key((des_cblock *)key1,ks);
+	des_cbc_cksum((des_cblock *)str,(des_cblock *)key1,(long)length,ks,
+		(des_cblock *)key1);
+	des_set_key((des_cblock *)key2,ks);
+	des_cbc_cksum((des_cblock *)str,(des_cblock *)key2,(long)length,ks,
+		(des_cblock *)key2);
+	des_check_key=i;
+	memset(ks,0,sizeof(ks));
+	des_set_odd_parity(key1);
+	des_set_odd_parity(key2);
+	}