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[Bug 27602] ECDSA's Sign operation is not explicit about how r and s are concatenated (padding)

From: <bugzilla@jessica.w3.org>
Date: Mon, 05 Jan 2015 18:03:56 +0000
To: public-webcrypto@w3.org
Message-ID: <bug-27602-7213-OYMHT3nxBx@http.www.w3.org/Bugs/Public/>

Mark Watson <watsonm@netflix.com> changed:

           What    |Removed                     |Added
                 CC|                            |watsonm@netflix.com

--- Comment #1 from Mark Watson <watsonm@netflix.com> ---
r and s are just integers in the interval [ 1, n-1 ] where n is the order of
the base point G of the elliptic curve.

The ambiguity is in "Convert r/s to a bitstring" since it is not specified what
the output bitstring length should be.

I assume it should be the smallest multiple of 8 bits which can represent the
value n-1 (I expect this is also what Eric meant in comment #0).

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Received on Monday, 5 January 2015 18:03:58 UTC

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