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c_curve_decls.nim
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# Constantine
# Copyright (c) 2018-2019 Status Research & Development GmbH
# Copyright (c) 2020-Present Mamy André-Ratsimbazafy
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
import
../constantine/math/config/curves,
../constantine/curves_primitives,
../constantine/math/extension_fields # generic sandwich
export curves, curves_primitives, extension_fields
# Overview
# ------------------------------------------------------------
#
# This files provides template for C bindings generation
template genBindingsField*(Field: untyped) =
when appType == "lib":
{.push noconv, dynlib, exportc, raises: [].} # No exceptions allowed
else:
{.push noconv, exportc, raises: [].} # No exceptions allowed
func `ctt _ Field _ unmarshalBE`(dst: var Field, src: openarray[byte]): bool =
## Deserialize
unmarshalBE(dst, src)
func `ctt _ Field _ marshalBE`(dst: var openarray[byte], src: Field): bool =
marshalBE(dst, src)
# --------------------------------------------------------------------------------------
func `ctt _ Field _ is_eq`(a, b: Field): SecretBool =
a == b
func `ctt _ Field _ is_zero`(a: Field): SecretBool =
a.isZero()
func `ctt _ Field _ is_one`(a: Field): SecretBool =
a.isOne()
func `ctt _ Field _ is_minus_one`(a: Field): SecretBool =
a.isMinusOne()
# --------------------------------------------------------------------------------------
func `ctt _ Field _ set_zero`(a: var Field) =
a.setZero()
func `ctt _ Field _ set_one`(a: var Field) =
a.setOne()
func `ctt _ Field _ set_minus_one`(a: var Field) =
a.setMinusOne()
# --------------------------------------------------------------------------------------
func `ctt _ Field _ neg`(r: var Field, a: Field) =
r.neg(a)
func `ctt _ Field _ neg_in_place`(a: var Field) =
a.neg()
func `ctt _ Field _ sum`(r: var Field, a, b: Field) =
r.sum(a,b)
func `ctt _ Field _ add_in_place`(a: var Field, b: Field) =
a += b
func `ctt _ Field _ diff`(r: var Field, a, b: Field) =
r.diff(a,b)
func `ctt _ Field _ sub_in_place`(a: var Field, b: Field) =
a -= b
func `ctt _ Field _ double`(r: var Field, a: Field) =
r.double(a)
func `ctt _ Field _ double_in_place`(a: var Field) =
a.double()
# --------------------------------------------------------------------------------------
func `ctt _ Field _ prod`(r: var Field, a, b: Field) =
r.prod(a,b)
func `ctt _ Field _ mul_in_place`(a: var Field, b: Field) =
a *= b
func `ctt _ Field _ square`(r: var Field, a: Field) =
r.square(a)
func `ctt _ Field _ square_in_place`(a: var Field) =
a.square()
# --------------------------------------------------------------------------------------
func `ctt _ Field _ div2`(a: var Field) =
a.div2()
func `ctt _ Field _ inv`(r: var Field, a: Field) =
r.inv(a)
func `ctt _ Field _ inv_in_place`(a: var Field) =
a.inv()
# --------------------------------------------------------------------------------------
func `ctt _ Field _ ccopy`(a: var Field, b: Field, ctl: SecretBool) =
a.ccopy(b, ctl)
func `ctt _ Field _ cswap`(a, b: var Field, ctl: SecretBool) =
a.cswap(b, ctl)
func `ctt _ Field _ cset_zero`(a: var Field, ctl: SecretBool) =
a.csetZero(ctl)
func `ctt _ Field _ cset_one`(a: var Field, ctl: SecretBool) =
a.csetOne(ctl)
func `ctt _ Field _ cneg_in_place`(a: var Field, ctl: SecretBool) =
a.cneg(ctl)
func `ctt _ Field _ cadd_in_place`(a: var Field, b: Field, ctl: SecretBool) =
a.cadd(b, ctl)
func `ctt _ Field _ csub_in_place`(a: var Field, b: Field, ctl: SecretBool) =
a.csub(b, ctl)
{.pop.}
template genBindingsFieldSqrt*(Field: untyped) =
when appType == "lib":
{.push noconv, dynlib, exportc, raises: [].} # No exceptions allowed
else:
{.push noconv, exportc, raises: [].} # No exceptions allowed
func `ctt _ Field _ is_square`(a: Field): SecretBool =
a.isSquare()
func `ctt _ Field _ invsqrt`(r: var Field, a: Field) =
r.invsqrt(a)
func `ctt _ Field _ invsqrt_in_place`(r: var Field, a: Field): SecretBool =
r.invsqrt_if_square(a)
func `ctt _ Field _ sqrt_in_place`(a: var Field) =
a.sqrt()
func `ctt _ Field _ sqrt_if_square_in_place`(a: var Field): SecretBool =
a.sqrt_if_square()
func `ctt _ Field _ sqrt_invsqrt`(sqrt, invsqrt: var Field, a: Field) =
sqrt_invsqrt(sqrt, invsqrt, a)
func `ctt _ Field _ sqrt_invsqrt_if_square`(sqrt, invsqrt: var Field, a: Field): SecretBool =
sqrt_invsqrt_if_square(sqrt, invsqrt, a)
func `ctt _ Field _ sqrt_ratio_if_square`(r: var Field, u, v: Field): SecretBool =
r.sqrt_ratio_if_square(u, v)
{.pop.}
template genBindingsExtField*(Field: untyped) =
when appType == "lib":
{.push noconv, dynlib, exportc, raises: [].} # No exceptions allowed
else:
{.push noconv, exportc, raises: [].} # No exceptions allowed
# --------------------------------------------------------------------------------------
func `ctt _ Field _ is_eq`(a, b: Field): SecretBool =
a == b
func `ctt _ Field _ is_zero`(a: Field): SecretBool =
a.isZero()
func `ctt _ Field _ is_one`(a: Field): SecretBool =
a.isOne()
func `ctt _ Field _ is_minus_one`(a: Field): SecretBool =
a.isMinusOne()
# --------------------------------------------------------------------------------------
func `ctt _ Field _ set_zero`(a: var Field) =
a.setZero()
func `ctt _ Field _ set_one`(a: var Field) =
a.setOne()
func `ctt _ Field _ set_minus_one`(a: var Field) =
a.setMinusOne()
# --------------------------------------------------------------------------------------
func `ctt _ Field _ neg`(a: var Field) =
a.neg()
func `ctt _ Field _ sum`(r: var Field, a, b: Field) =
r.sum(a,b)
func `ctt _ Field _ add_in_place`(a: var Field, b: Field) =
a += b
func `ctt _ Field _ diff`(r: var Field, a, b: Field) =
r.diff(a,b)
func `ctt _ Field _ sub_in_place`(a: var Field, b: Field) =
a -= b
func `ctt _ Field _ double`(r: var Field, a: Field) =
r.double(a)
func `ctt _ Field _ double_in_place`(a: var Field) =
a.double()
func `ctt _ Field _ conj`(r: var Field, a: Field) =
r.conj(a)
func `ctt _ Field _ conj_in_place`(a: var Field) =
a.conj()
func `ctt _ Field _ conjneg`(r: var Field, a: Field) =
r.conjneg(a)
func `ctt _ Field _ conjneg_in_place`(a: var Field) =
a.conjneg()
# --------------------------------------------------------------------------------------
func `ctt _ Field _ prod`(r: var Field, a, b: Field) =
r.prod(a,b)
func `ctt _ Field _ mul_in_place`(a: var Field, b: Field) =
a *= b
func `ctt _ Field _ square`(r: var Field, a: Field) =
r.square(a)
func `ctt _ Field _ square_in_place`(a: var Field) =
a.square()
# --------------------------------------------------------------------------------------
func `ctt _ Field _ div2`(a: var Field) =
a.div2()
func `ctt _ Field _ inv`(r: var Field, a: Field) =
r.inv(a)
func `ctt _ Field _ inv_in_place`(a: var Field) =
a.inv()
# --------------------------------------------------------------------------------------
func `ctt _ Field _ ccopy`(a: var Field, b: Field, ctl: SecretBool) =
a.ccopy(b, ctl)
func `ctt _ Field _ cset_zero`(a: var Field, ctl: SecretBool) =
a.csetZero(ctl)
func `ctt _ Field _ cset_one`(a: var Field, ctl: SecretBool) =
a.csetOne(ctl)
func `ctt _ Field _ cneg_in_place`(a: var Field, ctl: SecretBool) =
a.cneg(ctl)
func `ctt _ Field _ cadd_in_place`(a: var Field, b: Field, ctl: SecretBool) =
a.cadd(b, ctl)
func `ctt _ Field _ csub_in_place`(a: var Field, b: Field, ctl: SecretBool) =
a.csub(b, ctl)
{.pop.}
template genBindingsExtFieldSqrt*(Field: untyped) =
when appType == "lib":
{.push noconv, dynlib, exportc, raises: [].} # No exceptions allowed
else:
{.push noconv, exportc, raises: [].} # No exceptions allowed
func `ctt _ Field _ is_square`(a: Field): SecretBool =
a.isSquare()
func `ctt _ Field _ sqrt_in_place`(a: var Field) =
a.sqrt()
func `ctt _ Field _ sqrt_if_square_in_place`(a: var Field): SecretBool =
a.sqrt_if_square()
{.pop}
template genBindings_EC_ShortW_Affine*(ECP, Field: untyped) =
when appType == "lib":
{.push noconv, dynlib, exportc, raises: [].} # No exceptions allowed
else:
{.push noconv, exportc, raises: [].} # No exceptions allowed
# --------------------------------------------------------------------------------------
func `ctt _ ECP _ is_eq`(P, Q: ECP): SecretBool =
P == Q
func `ctt _ ECP _ is_inf`(P: ECP): SecretBool =
P.isInf()
func `ctt _ ECP _ set_inf`(P: var ECP) =
P.setInf()
func `ctt _ ECP _ ccopy`(P: var ECP, Q: ECP, ctl: SecretBool) =
P.ccopy(Q, ctl)
func `ctt _ ECP _ is_on_curve`(x, y: Field): SecretBool =
isOnCurve(x, y, ECP.G)
func `ctt _ ECP _ neg`(P: var ECP, Q: ECP) =
P.neg(Q)
func `ctt _ ECP _ neg_in_place`(P: var ECP) =
P.neg()
{.pop.}
template genBindings_EC_ShortW_NonAffine*(ECP, ECP_Aff, ScalarBig, ScalarField: untyped) =
# TODO: remove the need of explicit ScalarBig and ScalarField
when appType == "lib":
{.push noconv, dynlib, exportc, raises: [].} # No exceptions allowed
else:
{.push noconv, exportc, raises: [].} # No exceptions allowed
# --------------------------------------------------------------------------------------
func `ctt _ ECP _ is_eq`(P, Q: ECP): SecretBool =
P == Q
func `ctt _ ECP _ is_inf`(P: ECP): SecretBool =
P.isInf()
func `ctt _ ECP _ set_inf`(P: var ECP) =
P.setInf()
func `ctt _ ECP _ ccopy`(P: var ECP, Q: ECP, ctl: SecretBool) =
P.ccopy(Q, ctl)
func `ctt _ ECP _ neg`(P: var ECP, Q: ECP) =
P.neg(Q)
func `ctt _ ECP _ neg_in_place`(P: var ECP) =
P.neg()
func `ctt _ ECP _ cneg_in_place`(P: var ECP, ctl: SecretBool) =
P.neg()
func `ctt _ ECP _ sum`(r: var ECP, P, Q: ECP) =
r.sum(P, Q)
func `ctt _ ECP _ add_in_place`(P: var ECP, Q: ECP) =
P += Q
func `ctt _ ECP _ diff`(r: var ECP, P, Q: ECP) =
r.diff(P, Q)
func `ctt _ ECP _ double`(r: var ECP, P: ECP) =
r.double(P)
func `ctt _ ECP _ double_in_place`(P: var ECP) =
P.double()
func `ctt _ ECP _ affine`(dst: var ECP_Aff, src: ECP) =
dst.affine(src)
func `ctt _ ECP _ from_affine`(dst: var ECP, src: ECP_Aff) =
dst.fromAffine(src)
func `ctt _ ECP _ batch_affine`(dst: ptr UncheckedArray[ECP_Aff], src: ptr UncheckedArray[ECP], n: csize_t) =
dst.batchAffine(src, cast[int](n))
when ECP.G == G1:
# Workaround gensym issue in templates like mulCheckSparse
# for {.noInit.} temporaries and probably generic sandwich
func `ctt _ ECP _ scalar_mul_big_coef`(
P: var ECP, scalar: ScalarBig) =
P.scalarMul(scalar)
func `ctt _ ECP _ scalar_mul_fr_coef`(
P: var ECP, scalar: ScalarField) =
var big: ScalarBig # TODO: {.noInit.}
big.fromField(scalar)
P.scalarMul(big)
func `ctt _ ECP _ scalar_mul_big_coef_vartime`(
P: var ECP, scalar: ScalarBig) =
P.scalarMul_vartime(scalar)
func `ctt _ ECP _ scalar_mul_fr_coef_vartime`(
P: var ECP, scalar: ScalarField) =
var big: ScalarBig # TODO: {.noInit.}
big.fromField(scalar)
P.scalarMul_vartime(big)
func `ctt _ ECP _ multi_scalar_mul_big_coefs_vartime`(
r: var ECP,
coefs: ptr UncheckedArray[ScalarBig],
points: ptr UncheckedArray[ECP_Aff],
len: csize_t) =
r.multiScalarMul_vartime(coefs, points, cast[int](len))
func `ctt _ ECP _ multi_scalar_mul_fr_coefs_vartime`(
r: var ECP,
coefs: ptr UncheckedArray[ScalarField],
points: ptr UncheckedArray[ECP_Aff],
len: csize_t)=
let n = cast[int](len)
let coefs_fr = allocHeapArrayAligned(ScalarBig, n, alignment = 64)
for i in 0 ..< n:
coefs_fr[i].fromField(coefs[i])
r.multiScalarMul_vartime(coefs_fr, points, n)
freeHeapAligned(coefs_fr)
{.pop.}