1 files changed, 121 insertions, 0 deletions
diff --git a/eBones/des/str2key.c b/eBones/des/str2key.c
new file mode 100644
index 0000000..baad3c2
--- /dev/null
+++ b/eBones/des/str2key.c
@@ -0,0 +1,121 @@
+/* str2key.c */
+/* Copyright (C) 1993 Eric Young - see README for more details */
+
+/*-
+ *	$Id: str2key.c,v 1.2 1994/07/19 19:22:08 g89r4222 Exp $
+ */
+
+#include "des_locl.h"
+
+extern int des_check_key;
+
+int des_string_to_key(str,key)
+char *str;
+des_cblock *key;
+	{
+	des_key_schedule ks;
+	int i,length;
+	register unsigned char j;
+
+	bzero(key,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);
+	bzero(ks,sizeof(ks));
+	des_set_odd_parity((des_cblock *)key);
+	return(0);
+	}
+
+int des_string_to_2keys(str,key1,key2)
+char *str;
+des_cblock *key1,*key2;
+	{
+	des_key_schedule ks;
+	int i,length;
+	register unsigned char j;
+
+	bzero(key1,8);
+	bzero(key2,8);
+	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) bcopy(key1,key2,8);
+#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;
+	bzero(ks,sizeof(ks));
+	des_set_odd_parity(key1);
+	des_set_odd_parity(key2);
+	return(0);
+	}