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Re: [TLS] Truncated HMAC



On Nov 15, 2006, at 5:02 PM, Mike wrote:

Hello,

I have a question regarding the truncated HMAC extension.
When this extension is negotiated, the spec says that
CipherSpec.hash_size is 10 bytes.  So does that mean I
should only generate 10 bytes for each MAC secret?


From RFC 4366, section 3.5:

"Note that this extension does not affect the calculation of the pseudo-random function (PRF) as part of handshaking or key derivation."

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