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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:20:04 ADT
Hamdi Tounsi (hamdi.tounsi@ati.tn)
Thu, 2 Jul 1998 09:42:43 -0100 (GMT+1)
hi and thanks for your help
the objective from behind my question was not if 576-bit keys gives extra security.
i know that they are no more secure than 448-bit keys and even
128-bit keys (am i too optimist ?)
in fact, i have a case where i need to use a 128-bit blf key (it is an md5 hash)
but for some reason i can't use the normal blf key setup where the key bytes
are cyclically xored through the P-array. so i used a 576-bits key:
128-bit md5 hash + zeros until 576 bits total
this is going to be xored in one pass with the p-array without any bytes being recycled
do you think that this schema is acceptable ?
(the case i'm talking about is an inlined blf key setup in a very limited memory space, so i used a modified key setup where key is :
l0 l1 l2 l3 (4 unsigned long) is xored with P[0] P[1] P[2] P[3]
the other P-array elements are not touched as if they were xored with a zero value)
best regards
The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:20:04 ADT