mirror of
https://github.com/logos-storage/constantine.git
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4ccd8aaab8
* stash prep for Barret Reduction * benches lost in rebase * fix vartime reduction * some improvement and fixes on reduce_vartime * Fuse reductions when converting to Montgomery + use window=1 in powMont for small exponents. ~2.7x to 3.3x accel * modexp: Introduce a no-reduction path for small base+exponent compared to modulus. Fix DOS * optim for padded exponents * remove commented out code [skip ci] * Missing noInline for allocStackArray
22 lines
531 B
Nim
22 lines
531 B
Nim
# From issue #241
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import
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../../constantine/math/[
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arithmetic,
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io/io_bigints],
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../../constantine/math_arbitrary_precision/arithmetic/limbs_divmod_vartime
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let a = BigInt[64].fromUint(0xa0e5cb56a1c08396'u64)
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let M = BigInt[64].fromUint(0xae57180eceb0206f'u64)
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var r, r2: BigInt[64]
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r.reduce(a, M)
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doAssert r2.limbs.reduce_vartime(a.limbs, M.limbs)
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let rU64 = 0xa0e5cb56a1c08396'u64 mod 0xae57180eceb0206f'u64
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# echo r.toHex()
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doAssert rU64 == a.limbs[0].uint64
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doAssert bool(a == r)
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echo "SUCCESS: t_bigints_mod.nim" |