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Re: [Cfrg] irsg review of draft-mcgrew-hash-sigs-12

"Salz, Rich" <rsalz@akamai.com> Wed, 05 September 2018 12:18 UTC

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From: "Salz, Rich" <rsalz@akamai.com>
To: Martin Thomson <martin.thomson@gmail.com>, Stephen Farrell <stephen.farrell@cs.tcd.ie>
CC: "irsg@irtf.org" <irsg@irtf.org>, IRTF CFRG <Cfrg@irtf.org>, "Scott Fluhrer (sfluhrer)" <sfluhrer@cisco.com>
Thread-Topic: [Cfrg] irsg review of draft-mcgrew-hash-sigs-12
Thread-Index: AQHUP5sB4cOqafrcpEeAkAByPGmfXaTfxtCAgAFU24CAAB21gIAAZ/gAgAAIq4D///vQAA==
Date: Wed, 05 Sep 2018 12:18:14 +0000
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Subject: Re: [Cfrg] irsg review of draft-mcgrew-hash-sigs-12
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  *   Too many primitives we get are effectively unusable as a result of having options. The debate around ed25519 use for DKIM is a great example of that. RSA-PSS is another great example of a tool with too many independent inputs.

Agree.  Unless there are simple use-cases that make it easy to pick which knob to use, such as keylength.  Please define one mechanism.

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