k256: add Scalar::from_digest #78
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This method is intended for use when implementing ECDSA, namely for computing a `Scalar` from the hash of the message: https://en.wikipedia.org/wiki/Elliptic_Curve_Digital_Signature_Algorithm#Signature_generation_algorithm 1. Calculate 𝑒 = HASH(𝑚) 2. Let 𝐳 be the 𝐋𝑛 leftmost bits of 𝑒, where 𝐋𝑛 is the bit length of the group order 𝑛
Codecov Report
@@ Coverage Diff @@
## master #78 +/- ##
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- Coverage 55.91% 55.51% -0.41%
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Files 15 15
Lines 2897 2918 +21
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Hits 1620 1620
- Misses 1277 1298 +21
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This was referenced Jul 16, 2020
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This PR is an alternative to #76
This method is intended for use when implementing ECDSA, namely for computing a
Scalarfrom the hash of the message:https://en.wikipedia.org/wiki/Elliptic_Curve_Digital_Signature_Algorithm#Signature_generation_algorithm