[127040] in cryptography@c2.net mail archive
Using a MAC in addition to symmetric encryption
daemon@ATHENA.MIT.EDU (Erik Ostermueller)
Sun Jun 29 14:57:50 2008
Date: Fri, 27 Jun 2008 07:52:59 -0700 (PDT)
From: Erik Ostermueller <eostermueller@yahoo.com>
Reply-To: eostermueller@yahoo.com
To: cryptography@metzdowd.com
Hello all,
If I exchange messages with a system and the messages are encrypted with a symmetric key, what further benefit would we get by using a MAC (Message Authentication Code) along with the message encryption?
Being new to all this, using the encrytpion and MAC together seem redundant.
Thanks,
--Erik Ostermueller
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