On Thu, Feb 29, 2024 at 09:20:06PM -0500, Stefan Berger wrote: > Adjust the calculation of the maximum signature size for support of > NIST P521. While existing curves may prepend a 0 byte to their coordinates > (to make the number positive), NIST P521 will not do this since only the > first bit in the most significant byte is used. > > If the encoding of the x & y coordinates requires more than 128 bytes then > an additional byte is needed for the encoding of the length. Take this into > account when calculating the maximum signature size. > > Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxxxxx> Reviewed-by: Lukas Wunner <lukas@xxxxxxxxx>
