Initial revision

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@171 ec53bebd-3082-4978-b11e-865c3cabbd6b
1995-10-23 11:20:30 +00:00
parent b1fce0a864
commit b33abb44fd
118 changed files with 23033 additions and 0 deletions
--- a/lib/des/str2key.c
+++ b/lib/des/str2key.c
@@ -0,0 +1,112 @@
+/* str2key.c */
+/* Copyright (C) 1993 Eric Young - see README for more details */
+#include "des_locl.h"
+
+extern int des_check_key;
+
+int des_string_to_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);
+  return(0);
+}
+
+int des_string_to_2keys(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);
+  return(0);
+}