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638cb71e16
* Introduce Fr type: finite field over curve order. Need workaround for https://github.com/nim-lang/Nim/issues/16774 * Split curve properties into core and derived * Attach field properties to an instantiated field instead of the curve enum * Workaround https://github.com/nim-lang/Nim/issues/14021, yet another "working with types in macros" is difficult https://github.com/nim-lang/RFCs/issues/44 * Implement finite field over prime order of a curve subgroup * skip OpenSSL tests on windows
48 lines
1.5 KiB
Nim
48 lines
1.5 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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std/macros,
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../config/[curves, type_ff],
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../towers,
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./bls12_377_glv,
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./bls12_381_glv,
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./bn254_nogami_glv,
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./bn254_snarks_glv,
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./bw6_761_glv
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{.experimental: "dynamicBindSym".}
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macro dispatch(C: static Curve, tag: static string, G: static string): untyped =
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result = bindSym($C & "_" & tag & "_" & G)
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template babai*(F: typedesc[Fp or Fp2]): untyped =
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## Return the GLV Babai roundings vector
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const G = if F is Fp: "G1"
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else: "G2"
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dispatch(F.C, "Babai", G)
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template lattice*(F: typedesc[Fp or Fp2]): untyped =
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## Returns the GLV Decomposition Lattice
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const G = if F is Fp: "G1"
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else: "G2"
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dispatch(F.C, "Lattice", G)
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macro getCubicRootOfUnity_mod_p*(C: static Curve): untyped =
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## Get a non-trivial cubic root of unity (mod p) with p the prime field
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result = bindSym($C & "_cubicRootOfUnity_mod_p")
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func hasEndomorphismAcceleration*(C: static Curve): bool =
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C in {
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BN254_Nogami,
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BN254_Snarks,
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BLS12_377,
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BLS12_381,
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BW6_761
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}
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