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-rw-r--r--crypto/des/str2key.c192
1 files changed, 91 insertions, 101 deletions
diff --git a/crypto/des/str2key.c b/crypto/des/str2key.c
index 1077f99d1b27..38a478cf4358 100644
--- a/crypto/des/str2key.c
+++ b/crypto/des/str2key.c
@@ -5,21 +5,21 @@
* 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:
@@ -34,10 +34,10 @@
* 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
+ * 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
@@ -49,7 +49,7 @@
* 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
@@ -60,115 +60,105 @@
#include "des_locl.h"
void DES_string_to_key(const char *str, DES_cblock *key)
- {
- DES_key_schedule ks;
- int i,length;
- register unsigned char j;
+{
+ DES_key_schedule ks;
+ int i, length;
+ register unsigned char j;
- memset(key,0,8);
- length=strlen(str);
+ 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;
- }
- }
+ 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(key);
+ DES_set_odd_parity(key);
#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
- if(DES_is_weak_key(key))
- (*key)[7] ^= 0xF0;
- DES_set_key(key,&ks);
+ if (DES_is_weak_key(key))
+ (*key)[7] ^= 0xF0;
+ DES_set_key(key, &ks);
#else
- DES_set_key_unchecked(key,&ks);
+ DES_set_key_unchecked(key, &ks);
#endif
- DES_cbc_cksum((const unsigned char*)str,key,length,&ks,key);
- OPENSSL_cleanse(&ks,sizeof(ks));
- DES_set_odd_parity(key);
- }
+ DES_cbc_cksum((const unsigned char *)str, key, length, &ks, key);
+ OPENSSL_cleanse(&ks, sizeof(ks));
+ DES_set_odd_parity(key);
+}
void DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2)
- {
- DES_key_schedule ks;
- int i,length;
- register unsigned char j;
+{
+ DES_key_schedule ks;
+ int i, length;
+ register unsigned char j;
- memset(key1,0,8);
- memset(key2,0,8);
- length=strlen(str);
+ 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);
+ 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(key1);
- DES_set_odd_parity(key2);
+ DES_set_odd_parity(key1);
+ DES_set_odd_parity(key2);
#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
- if(DES_is_weak_key(key1))
- (*key1)[7] ^= 0xF0;
- DES_set_key(key1,&ks);
+ if (DES_is_weak_key(key1))
+ (*key1)[7] ^= 0xF0;
+ DES_set_key(key1, &ks);
#else
- DES_set_key_unchecked(key1,&ks);
+ DES_set_key_unchecked(key1, &ks);
#endif
- DES_cbc_cksum((const unsigned char*)str,key1,length,&ks,key1);
+ DES_cbc_cksum((const unsigned char *)str, key1, length, &ks, key1);
#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
- if(DES_is_weak_key(key2))
- (*key2)[7] ^= 0xF0;
- DES_set_key(key2,&ks);
+ if (DES_is_weak_key(key2))
+ (*key2)[7] ^= 0xF0;
+ DES_set_key(key2, &ks);
#else
- DES_set_key_unchecked(key2,&ks);
+ DES_set_key_unchecked(key2, &ks);
#endif
- DES_cbc_cksum((const unsigned char*)str,key2,length,&ks,key2);
- OPENSSL_cleanse(&ks,sizeof(ks));
- DES_set_odd_parity(key1);
- DES_set_odd_parity(key2);
- }
+ DES_cbc_cksum((const unsigned char *)str, key2, length, &ks, key2);
+ OPENSSL_cleanse(&ks, sizeof(ks));
+ DES_set_odd_parity(key1);
+ DES_set_odd_parity(key2);
+}