1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
from py_ecc.fields import (
optimized_bls12_381_FQ2 as FQ2,
)
from py_ecc.optimized_bls12_381 import (
field_modulus as q,
)
G2_COFACTOR = 305502333931268344200999753193121504214466019254188142667664032982267604182971884026507427359259977847832272839041616661285803823378372096355777062779109 # noqa: E501
FQ2_ORDER = q**2 - 1
EIGHTH_ROOTS_OF_UNITY = tuple(FQ2([1, 1]) ** ((FQ2_ORDER * k) // 8) for k in range(8))
POW_2_381 = 2**381
POW_2_382 = 2**382
POW_2_383 = 2**383
POW_2_384 = 2**384
# Parameters for hashing to the field as specified in:
# https://tools.ietf.org/html/draft-irtf-cfrg-hash-to-curve-09#section-8.8.1
HASH_TO_FIELD_L = 64
|
