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Re: HMAC-MD5 test vectors?

To: "Theodore Y. Ts'o" <tytso@MIT.EDU>
Subject: Re: HMAC-MD5 test vectors?
From: Nina Yuan <nyuan@bbn.com>
Date: Thu, 24 Jul 1997 18:07:03 -0400
cc: ipsec@tis.com
In-reply-to: Your message of "Thu, 24 Jul 1997 17:40:38 EDT." <199707242140.RAA18896@dcl.MIT.EDU>
Sender: owner-ipsec@ex.tis.com

Ted,

> Has anyone else tried implementing HMAC-MD5 and used the test vectors
> specified in RFC 2104 to verify their implementation?
> 
> I'm tearing my hair out, because I'm consistently getting
> 
> 		6372bd727c8a3c98f2850e7766e4148a
> 
> as the MAC for first test vector, but RFC 2104 says that the correct MAC
> should be:
> 
> 		9294727a3638bb1c13f48ef8158bfc9d

I just checked and I do get the correct MAC (as specified in the RFC) for
tests #1 and #2.  I'm using the reference implementation from the RFC atop
the NSA Cryptoki 1.0 implementation, which in turn uses RSAREF to do MD5.
Interesting that you're getting the correct MACs for tests 2 and 3 though!
Silly question, but are you sure you're giving it the right key and key
length?

-Nina
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Network Security Department              (617) 873-1878; FAX (617) 873-4086
BBN Technologies, GTE Corp.              nyuan@bbn.com
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References:

HMAC-MD5 test vectors?

From: "Theodore Y. Ts'o" <tytso@MIT.EDU>

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