Re: Parity Error on keys used for DES crypto test

[leroy christophe <christophe.leroy@c-s.fr>]

Le 24/04/2014 01:58, Kim Phillips a écrit :
> On Wed, 23 Apr 2014 10:20:16 +0200
> leroy christophe <christophe.leroy@c-s.fr> wrote:
>
>> I'm altering the Freescale Talitos Driver in order to support the SEC1
>> security engine, and I have a big issue with the DES test vectors in
>> testmgr.h:
>>
>> The Sec Engine reports key parity error.
>>
>> Looking at the keys defined in testmgr.h for DES3, it looks like there
>> is a real parity issue with the test vectors. A DES key is supposed to
>> have all bytes with an odd number of ones. It is not the case in the key
>> below. At least the second byte 0xC0 has an even number of ones.
>>
>> static struct cipher_testvec des3_ede_cbc_enc_tv_template[] = {
>>       { /* Generated from openssl */
>>           .key    = "\xE9\xC0\xFF\x2E\x76\x0B\x64\x24"
>>                 "\x44\x4D\x99\x5A\x12\xD6\x40\xC0"
>>                 "\xEA\xC2\x84\xE8\x14\x95\xDB\xE8",
>>
>> So, how can this test vector work ?
> I'm not going to comment on the validity of the test key vector
> other than to say that you can turn off key parity errors in the
> SEC1 in the DEU Interrupt Control Register.
>
> Kim
>
Thanks, it works

Christophe