bls12: hash to G1 complaint with h2c draft - Githubissues

cloudflare / circl

CIRCL: Cloudflare Interoperable Reusable Cryptographic Library

http://blog.cloudflare.com/introducing-circl

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bls12: hash to G1 complaint with h2c draft #258

Closed armfazh closed 3 years ago

armfazh commented 3 years ago

Implements encode and hash to curve as recommended in IETF draft. See https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-hash-to-curve-11

Removes insecure try-and-increment method for hashing.

Changes:

Implements encode and hash to curve as recommended in IETF draft.
G1 ciphersuites for BLS12-381.
Removes certain memory allocations.
Adding test vectors for hash to G1.
Return int rather than bool in ff predicates.