| # 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 = 0x4080000000000001 |
| 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 = 0x1B377619212E7C8CB6499B50A846953F850974924D3F77C2E17DE6C06F2A6DE9 |
| Frb = 0x9EBEE691ED1837503EAB22F57B96AC8DC178B6DB2C08850C582193F90D5922A |
| |
| # Generator point on G2 |
| Pxa = 0x61A10BB519EB62FEB8D8C7E8C61EDB6A4648BBB4898BF0D91EE4224C803FB2B |
| Pxb = 0x516AAF9BA737833310AA78C5982AA5B1F4D746BAE3784B70D8C34C1E7D54CF3 |
| Pya = 0x21897A06BAF93439A90E096698C822329BD0AE6BDBE09BD19F0E07891CD2B9A |
| Pyb = 0xEBB2B0E7C8B15268F6D4456F5F38D37B09006FFD739C9578A2D1AEC6B3ACE9B |
