History

Hsiao-Wei Wang 93fc81e761 Use relative inner repo link		2019-07-01 11:22:18 +08:00
..
README.md	Use relative inner repo link	2019-07-01 11:22:18 +08:00
main.py	update BLS test generator and format to reflect spec change in BLS	2019-06-30 22:18:52 +02:00
requirements.txt	update version used in test generators to get SHA-256 hash	2019-05-24 11:05:07 -07:00

README.md

BLS Test Generator

Explanation of BLS12-381 type hierarchy The base unit is bytes48 of which only 381 bits are used

FQ: uint381 modulo field modulus
FQ2: (FQ, FQ)
G2: (FQ2, FQ2, FQ2)

Resources

Eth2.0 spec
Finite Field Arithmetic
Chapter 2 of Elliptic Curve Cryptography. Darrel Hankerson, Alfred Menezes, and Scott Vanstone
Zcash BLS parameters
Trinity implementation

Comments

Compared to Zcash, Ethereum specs always requires the compressed form (c_flag / most significant bit always set). Also note that pubkeys and privkeys are reversed.