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Subject: Re: [emergency] CAP and Signatures/Encryption
Interesting discussion. I would like to add that are also a number of
Internet standards (IETF) that deal with encryption and are used for encrypting
messages, such as e-mail. This includes the work of the IETF S/MIME working
group, specifically the S/MIME electronic mail security protocol that is widely
implemented in commercial mail agents. If you want something a bit more
low-level, I would also check out the work of the IPSEC group, specifically RFC
3686 - Using Advanced Encryption Standard (AES) Counter Mode With IPsec
Encapsulating Security Payload (ESP). This standard incorporates the
NIST standard that defines five modes of operation for AES and other
FIPS approved block ciphers [MODES].
As Bob suggests, rather than the EM TC define a new method of encryption, I
would opt for a statement of best practices for encrypting a CAP message using
existing, well known industry standards.
Regards
Carl