Hmmmm....
Tom
> In the linux/crypto/des.c from the 2.2.9 international patch, there is
>a section of code in des_set_key() that always rejects my keys. I was
hoping
>someone could explain the purpose of this bit of code, and maybe why it
>doesnt seem to like any of my keys.
>
...
>
> Here is the code snip: (for all my keys, the conditional is true. If I
>just skip this check, everything seems to work ok.)
>
>
>int des_set_key(struct cipher_context *cx,
> u8 *key, int keybytes)
>{
> register u32 n, w;
> register char * b0, * b1;
> char bits0[56], bits1[56];
>
>.....
>
> /* check for bad parity and weak keys */
> b0 = parity;
> n = b0[key[0]]; n <<= 4;
> n |= b0[key[1]]; n <<= 4;
> n |= b0[key[2]]; n <<= 4;
> n |= b0[key[3]]; n <<= 4;
> n |= b0[key[4]]; n <<= 4;
> n |= b0[key[5]]; n <<= 4;
> n |= b0[key[6]]; n <<= 4;
> n |= b0[key[7]];
> w = 0X88888888L;
> /* report bad parity in key */
> if ( n & w )
> return -1;
>
...
>
>Paul
>set@pobox.com
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