History

Danny Ryan 1f70d3eb97 add additional upgrade to py_ecc 2.0.0 to packages		2020-01-07 15:12:24 -07:00
..
README.md	[reopen] Eth2 shorthand standardized (#1452 )	2019-10-28 15:53:10 +08:00
main.py	fix BLS tests name length	2019-09-08 14:36:09 -04:00
requirements.txt	add additional upgrade to py_ecc 2.0.0 to packages	2020-01-07 15:12:24 -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 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.