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- Made des_key_check_weak() conform to other functions in return values.

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- Added documentation for des_key_check_weak() and des_key_check_key_parity()
This commit is contained in:
Paul Bakker 2011-07-06 14:37:33 +00:00
parent c43e326dca
commit 73206954d4
2 changed files with 6 additions and 3 deletions
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5
include/polarssl/des.h
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@ -77,14 +77,17 @@ void des_key_set_parity( unsigned char key[DES_KEY_SIZE] );
* a parity bit to allow verification. * a parity bit to allow verification.
* *
* \param key 8-byte secret key * \param key 8-byte secret key
*
* \return 0 is parity was ok, 1 if parity was not correct.
*/ */
int des_key_check_key_parity( const unsigned char key[DES_KEY_SIZE] ); int des_key_check_key_parity( const unsigned char key[DES_KEY_SIZE] );
/** /**
* \brief Check that key is not a weak or semi-weak DES key * \brief Check that key is not a weak or semi-weak DES key
* *
* \param key 8-byte secret key * \param key 8-byte secret key
*
* \resurn 0 if no weak key was found, 1 if a weak key was identified.
*/ */
int des_key_check_weak( const unsigned char key[DES_KEY_SIZE] ); int des_key_check_weak( const unsigned char key[DES_KEY_SIZE] );

4
library/des.c
View File

@ -371,9 +371,9 @@ int des_key_check_weak( const unsigned char key[DES_KEY_SIZE] )
for( i = 0; i < WEAK_KEY_COUNT; i++ ) for( i = 0; i < WEAK_KEY_COUNT; i++ )
if( memcmp( weak_key_table[i], key, DES_KEY_SIZE) == 0) if( memcmp( weak_key_table[i], key, DES_KEY_SIZE) == 0)
return( 0 ); return( 1 );
return( 1 ); return( 0 );
} }
static void des_setkey( unsigned long SK[32], const unsigned char key[DES_KEY_SIZE] ) static void des_setkey( unsigned long SK[32], const unsigned char key[DES_KEY_SIZE] )