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- Support for DES weak keys and parity bits added

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This commit is contained in:
Paul Bakker
2011-01-15 17:32:24 +00:00
parent f92d7a8c81
commit 1f87fb6896
5 changed files with 179 additions and 14 deletions
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43
tests/suites/test_suite_des.function
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@@ -254,6 +254,49 @@ des3_decrypt_cbc:key_count:hex_key_string:hex_iv_string:hex_src_string:hex_dst_s
}
END_CASE
BEGIN_CASE
des_key_parity_run:
{
int i, j, cnt;
unsigned char key[DES_KEY_SIZE];
unsigned int parity;
memset( key, 0, DES_KEY_SIZE );
cnt = 0;
// Iterate through all possible byte values
//
for( i = 0; i < 32; i++ )
{
for( j = 0; j < 8; j++ )
key[j] = cnt++;
// Set the key parity according to the table
//
des_key_set_parity( key );
// Check the parity with a function
//
for( j = 0; j < 8; j++ )
{
parity = key[j] ^ ( key[j] >> 4 );
parity = parity ^
( parity >> 1 ) ^
( parity >> 2 ) ^
( parity >> 3 );
parity &= 1;
if( parity != 1 )
TEST_ASSERT( 0 );
}
// Check the parity with the table
//
TEST_ASSERT( des_key_check_key_parity( key ) == 0 );
}
}
END_CASE
BEGIN_CASE
des_selftest:
{