Extract Secp256r1 fast reduction from the prototype #7230
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Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
gabor-mezei-arm
added
enhancement
component-crypto
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
gabor-mezei-arm
added
needs-review
minosgalanakis
approved these changes
Mar 13, 2023
3 tasks
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Description
Extract Secp256r1 fast reduction from the prototype (replace the pre-existing implementation).
This function calculates the residue of the input mod secp256r1_p. The result will have the same bitlength as the modulus. (That is, it is not guaranteed that it will be canonical.) This function is intended for reducing the result of a multiplication and therefore the number of input limbs can't be more than twice the limbs in the modulus.
Resolve #6850
Gatekeeper checklist