57 lines
2.0 KiB
Nim
57 lines
2.0 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/math/config/curves,
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../constantine/math/extension_fields,
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../constantine/math/ec_shortweierstrass,
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../constantine/hash_to_curve/hash_to_curve,
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../constantine/hashes,
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../constantine/math/constants/zoo_subgroups,
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# Test utilities
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../helpers/prng_unsafe
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const Iters = 6
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# Random seed for reproducibility
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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 "\n------------------------------------------------------\n"
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echo "Hash-to-curve (randomized) xoshiro512** seed: ", seed
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proc testH2C_consistency[EC: ECP_ShortW](curve: typedesc[EC]) =
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var P{.noInit.}: EC
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let msg = rng.random_byte_seq(32)
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sha256.hashToCurve(
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k = 128,
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output = P,
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augmentation = "",
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message = msg,
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domainSepTag = "H2C-CONSTANTINE-TESTSUITE"
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)
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doAssert bool isOnCurve(P.x, P.y, EC.G)
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doAssert bool isInSubgroup(P)
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suite "Hash-to-curve produces points on curve and in correct subgroup":
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test "BLS12-381 G1":
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for i in 0 ..< Iters:
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testH2C_consistency(ECP_ShortW_Aff[Fp[BLS12_381], G1])
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test "BLS12-381 G2":
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for i in 0 ..< Iters:
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testH2C_consistency(ECP_ShortW_Aff[Fp2[BLS12_381], G2])
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test "BN254_Snarks G1":
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for i in 0 ..< Iters:
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testH2C_consistency(ECP_ShortW_Aff[Fp[BN254_Snarks], G1])
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test "BN254_Snarks G2":
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for i in 0 ..< Iters:
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testH2C_consistency(ECP_ShortW_Aff[Fp2[BN254_Snarks], G2]) |