75 lines
2.6 KiB
Nim
75 lines
2.6 KiB
Nim
# 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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import
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# Standard library
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std/[unittest, times],
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# Internals
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../constantine/config/[common, curves],
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../constantine/arithmetic,
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../constantine/io/io_bigints,
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../constantine/elliptic/[ec_weierstrass_affine, ec_weierstrass_projective, ec_scalar_mul],
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# Test utilities
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../helpers/prng_unsafe,
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./support/ec_reference_scalar_mult,
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./t_ec_template
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const
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Iters = 128
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ItersMul = Iters div 4
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run_EC_mul_sanity_tests(
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ec = ECP_SWei_Proj[Fp[BN254_Snarks]],
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ItersMul = ItersMul,
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moduleName = "test_ec_weierstrass_projective_g1_mul_sanity_" & $BN254_Snarks
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)
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run_EC_mul_sanity_tests(
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ec = ECP_SWei_Proj[Fp[BLS12_381]],
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ItersMul = ItersMul,
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moduleName = "test_ec_weierstrass_projective_g1_mul_sanity_" & $BLS12_381
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)
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test "EC mul [Order]P == Inf":
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var rng: RngState
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let seed = uint32(getTime().toUnix() and (1'i64 shl 32 - 1)) # unixTime mod 2^32
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rng.seed(seed)
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echo "test_ec_weierstrass_projective_g1_mul_sanity_extra_curve_order_mul_sanity xoshiro512** seed: ", seed
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proc test(EC: typedesc, bits: static int, randZ: static bool) =
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for _ in 0 ..< ItersMul:
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when randZ:
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let a = rng.random_unsafe_with_randZ(EC)
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else:
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let a = rng.random_unsafe(EC)
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let exponent = EC.F.C.getCurveOrder()
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var exponentCanonical{.noInit.}: array[(bits+7) div 8, byte]
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exponentCanonical.exportRawUint(exponent, bigEndian)
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var
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impl = a
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reference = a
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scratchSpace{.noInit.}: array[1 shl 4, EC]
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impl.scalarMulGeneric(exponentCanonical, scratchSpace)
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reference.unsafe_ECmul_double_add(exponentCanonical)
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check:
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bool(impl.isInf())
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bool(reference.isInf())
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test(ECP_SWei_Proj[Fp[BN254_Snarks]], bits = BN254_Snarks.getCurveOrderBitwidth(), randZ = false)
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test(ECP_SWei_Proj[Fp[BN254_Snarks]], bits = BN254_Snarks.getCurveOrderBitwidth(), randZ = true)
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# TODO: BLS12 is using a subgroup of order "r" such as r*h = CurveOrder
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# with h the curve cofactor
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# instead of the full group
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# test(Fp[BLS12_381], bits = BLS12_381.getCurveOrderBitwidth(), randZ = false)
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# test(Fp[BLS12_381], bits = BLS12_381.getCurveOrderBitwidth(), randZ = true)
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