70 lines
2.0 KiB
Python
70 lines
2.0 KiB
Python
# Constantine
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# Copyright (c) 2018-2019 Status Research & Development GmbH
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# Copyright (c) 2020-Present Mamy André-Ratsimbazafy
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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# ############################################################
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#
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# BN254 test generator
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#
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# ############################################################
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# Parameters
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u = Integer('0x44E992B44A6909F1')
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p = 36*u^4 + 36*u^3 + 24*u^2 + 6*u + 1
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r = 36*u^4 + 36*u^3 + 18*u^2 + 6*u + 1
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cofactor = 1
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# Finite fields
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F = GF(p)
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K2.<u> = PolynomialRing(F)
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# F2.<beta> = F.extension(u^2+9)
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# K6.<v> = PolynomialRing(F2)
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# F6.<eta> = F2.extension(v^3-beta)
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# K12.<w> = PolynomialRing(F6)
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# K12.<gamma> = F6.extension(w^2-eta)
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# Curves
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b = 3
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G1 = EllipticCurve(F, [0, b])
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# G2 = EllipticCurve(F2, [0, b/beta])
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# Test generator
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set_random_seed(1337)
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for i in range(10):
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print('---------------------------------------')
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P = G1.random_point()
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(Px, Py, Pz) = P
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print('Px: ' + Integer(Px).hex())
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print('Py: ' + Integer(Py).hex())
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print('Pz: ' + Integer(Pz).hex())
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exponent = randrange(r) # Pick an integer below curve order
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print('scalar: ' + Integer(exponent).hex())
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Q = exponent * P
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(Qx, Qy, Qz) = Q
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print('Qx: ' + Integer(Qx).hex())
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print('Qy: ' + Integer(Qy).hex())
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print('Qz: ' + Integer(Qz).hex())
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print('=========================================')
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# CurveOrder sanity check
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#
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# P = G1.random_point()
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# (Px, Py, Pz) = P
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# print('Px: ' + Integer(Px).hex())
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# print('Py: ' + Integer(Py).hex())
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# print('Pz: ' + Integer(Pz).hex())
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#
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# print('order: ' + Integer(r).hex())
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#
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# Q = (r * cofactor) * P
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# (Qx, Qy, Qz) = Q
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# print('Qx: ' + Integer(Qx).hex())
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# print('Qy: ' + Integer(Qy).hex())
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# print('Qz: ' + Integer(Qz).hex())
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