Re: Calculating HMAC for a key based on password and salt

Peter Gutmann <[email protected]> Fri, 15 Mar 2013 00:42:26 +1300
Newsgroups gmane.comp.encryption.cryptlib
Message-ID <[email protected]>
Phil Arcuri <[email protected]> writes:

>Is this a general bug for which we should apply the fix you give below? Or
>should we wait for the next incremental release? Asking this another way - is
>the risk of making this change to our code less than leaving it "as is" and
>living with this bug?

It won't hurt anything to apply it, but since this had gone unnoticed for
several years now it also seems unlikely that anyone else ever used this
capability.  When cryptlib uses HMAC (e.g. in SSL/TLS, SSH, private-key
storage, envelopes, CMP, and others) it does its own key management, it never
derives a key directly from a password, so it would also never trigger this.

Peter.

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