| # BN254 curve constants |
| |
| from constants import * |
| |
| SHA = 'sha256' # hash type to use with this curve |
| EFS = 32 # Elliptic curve Field Size in bytes |
| CurveType = WEIERSTRASS |
| |
| SexticTwist = D_TYPE |
| SignOfX = NEGATIVEX |
| PairingFriendly = BN |
| |
| x = 0x4000000003C012B1 |
| if SignOfX == NEGATIVEX: |
| p = 36 * x * x * x * x - 36 * x * x * x + 24 * x * x - 6 * x + 1 |
| else: |
| p = 36 * x * x * x * x + 36 * x * x * x + 24 * x * x + 6 * x + 1 |
| |
| t = 6 * x * x + 1 |
| r = p + 1 - t |
| |
| # elliptic curve |
| A = 0 |
| B = 2 |
| |
| # generator point on G1 |
| Gx = p - 1 |
| Gy = 1 |
| |
| # Frobenius constant |
| Fra = 0x1359082FA63A0164AFE18B8AACA7189868677326F173F8215BD9083355C80EA3 |
| Frb = 0x10A6F7D0623628A900DC53D9CDBC4E3ABBD863C7269546C0628D1BBC06534710 |
| |
| # Generator point on G2 |
| |
| Pxa = 0x1AC95A5B7F9A9B4FA7121C73CB19C2F0944FB8E61B99362851C3E806CB5FAAF5 |
| Pxb = 0x53D3001036566043F11C2D1681F364C1BBA33A1ABDA094DEDE50060FC15F433 |
| Pya = 0x15727970B09E6FB2EE06BBFEF918406479DFF0936EA3484E6833216A9772A299 |
| Pyb = 0x11BCB56C02AC189FD57BD77F56070166D320056091A061ADC41BC11F9C49E8CD |
