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https://github.com/logos-storage/nim-poseidon2.git
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45 lines
1.0 KiB
Nim
45 lines
1.0 KiB
Nim
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import
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constantine/math/arithmetic,
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constantine/math/io/io_fields,
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constantine/math/io/io_bigints,
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constantine/math/config/curves
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#-------------------------------------------------------------------------------
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type B* = BigInt[254]
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type F* = Fr[BN254Snarks]
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type S* = (F,F,F)
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#-------------------------------------------------------------------------------
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func getZero*() : F =
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var z : F
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setZero(z)
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return z
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func getOne*() : F =
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var y : F
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# y.fromUint(1'u32) # WTF, why does this not compile ???
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y.fromHex("0x01")
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return y
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# for some reason this one does not compile... ???
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# (when actually called)
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func toF*(a: int) : F =
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var y : F
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y.fromInt(a)
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return y
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func hexToF*(s : string, endian: static Endianness = bigEndian) : F =
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let bigint = B.fromHex(s, endian)
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return F.fromBig(bigint)
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func arrayFromHex*[N](
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inp: array[N, string],
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endian: static Endianness = bigEndian) : array[N, F] =
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var tmp : array[N, F]
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for i in low(inp)..high(inp):
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tmp[i] = hexToF(inp[i], endian)
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return tmp
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