[SNMP4J] HMAC-MD5 vs MD5

[Ping Chen]

MD5 is just a hash function to calculate the Message digest.  

Any iterative cryptographic hash function, such as SHA-1 and  MD5, may be used in the calculation of an HMAC.
HMAC-MD5 means using MD5 hash function to calculate the Message digest  WITH A SECRET KEY(normally attach the secret at the end of the message then MD5).  If you use HMAC-MD5 to authenticate, the secret key is the shared key between client and server.

Hopefully this helps

Ping

----- Original Message ----
From: "Marco.Bresciani at alcatel.it" <Marco.Bresciani at alcatel.it>
To: snmp4j at agentpp.org
Sent: Monday, October 30, 2006 12:24:20 AM
Subject: [SNMP4J] HMAC-MD5 vs MD5

Which is the difference between HMAC-MD5 and MD5!?

Thanks,

Ing. Marco Bresciani

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