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Re: [jose] Platform Support for JWA Crypto Algorithms

Wan-Teh Chang <wtc@google.com> Wed, 31 October 2012 17:00 UTC

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Date: Wed, 31 Oct 2012 10:00:45 -0700
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From: Wan-Teh Chang <wtc@google.com>
To: Ryan Sleevi <sleevi@google.com>
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Cc: Michael.Jones@microsoft.com, jose@ietf.org, Axel.Nennker@telekom.de, public-webcrypto@w3.org
Subject: Re: [jose] Platform Support for JWA Crypto Algorithms
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On Mon, Oct 29, 2012 at 4:23 PM, Ryan Sleevi <sleevi@google.com> wrote:
>
> However, as an NSS developer, I do not see your presented argument as a
> reason not to use Concat-KDF, and Concat-KDF would be more preferable, as a
> NIST-blessed KDF, since NSS cares especially for NIST-blessed algorithms.

I think HKDF (hash-based key derivation function) is also worth considering.
It is specified in RFC 5869 and is also blessed by NIST in SP 800-56C.

Wan-Teh

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