[Cfrg] draft-mcgrew-hash-sigs question on the definition of one time
Jim Schaad <ietf@augustcellars.com> Sun, 29 April 2018 20:17 UTC
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From: Jim Schaad <ietf@augustcellars.com>
To: draft-mcgrew-hash-sigs@ietf.org
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Date: Sun, 29 Apr 2018 13:16:51 -0700
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Subject: [Cfrg] draft-mcgrew-hash-sigs question on the definition of one time
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I am doing a quick review of a draft dealing with LM-OTS One-Time signatures and I have run into a problem. Either my definition of one time is wrong or there appears to be an error in the draft. Before trying to do a deep read of this document I would like to get a clarification. The last sentence of paragraph 1 of section 4 says These are one-time signatures; each private key MUST be used at most one time to sign any given message. Is this "at most one time to sign" or "at most one time to sign a given message". That is don't re-sign the same message but a new message (for some definition of new) is ok. Jim