Re[2]: Proposals for key-ed MD5

["burt" <burt@RSA.COM (Burt Kaliski)>]

Some notes on Russ's observation:

There's no reason that hardware couldn't have MD5(K|MD5(K|text)) or 
whatever is chosen for keyed-hashing as a primitive, so it's still 
possible to do everything with one command.

Also, the key K may be stored in the peripheral device, so some 
special handling will be required --- the MD5 primitive would not be 
enough, instead and MD5(stored key,.) primitive would be needed.

However, it's nice to reduce the total number of primitives in a 
system, so reusing the same MD5 command for hashing as for 
keyed-hashing has its advantages.

-- Burt


______________________________ Reply Separator _________________________________
Subject: Re: Proposals for key-ed MD5
Author:  ,"Housley, Russ" <housley@spyrus.com> at INTERNET
Date:    4/7/95 8:00 AM


Received: by ccmail from RSA.COM

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