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Merged
ale-linux merged 2 commits into from
Dec 1, 2025
Merged

extendibility #36

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2268cab
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adecaro Dec 1, 2025
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adecaro Dec 1, 2025
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137 changes: 95 additions & 42 deletions math.go
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Original file line number Diff line number Diff line change
Expand Up @@ -55,27 +55,29 @@ func CurveIDToString(id CurveID) string {
}
}

// Curves defines the default available curves.
// They are instantiated either via the NewCurve function or directly.
var Curves []*Curve = []*Curve{
{
c: amcl.NewFp256bn(),
GenG1: &G1{g1: (&amcl.Fp256bn{}).GenG1(), curveID: FP256BN_AMCL},
GenG2: &G2{g2: (&amcl.Fp256bn{}).GenG2(), curveID: FP256BN_AMCL},
GenGt: &Gt{gt: (&amcl.Fp256bn{}).GenGt(), curveID: FP256BN_AMCL},
GroupOrder: &Zr{zr: amcl.NewFp256bn().GroupOrder(), curveID: FP256BN_AMCL},
CoordByteSize: (&amcl.Fp256bn{}).CoordinateByteSize(),
G1ByteSize: (&amcl.Fp256bn{}).G1ByteSize(),
CompressedG1ByteSize: (&amcl.Fp256bn{}).CompressedG1ByteSize(),
G2ByteSize: (&amcl.Fp256bn{}).G2ByteSize(),
CompressedG2ByteSize: (&amcl.Fp256bn{}).CompressedG2ByteSize(),
ScalarByteSize: (&amcl.Fp256bn{}).ScalarByteSize(),
curveID: FP256BN_AMCL,
},
NewCurve(
amcl.NewFp256bn(),
NewG1((&amcl.Fp256bn{}).GenG1(), FP256BN_AMCL),
NewG2((&amcl.Fp256bn{}).GenG2(), FP256BN_AMCL),
NewGt((&amcl.Fp256bn{}).GenGt(), FP256BN_AMCL),
NewZr(amcl.NewFp256bn().GroupOrder(), FP256BN_AMCL),
(&amcl.Fp256bn{}).CoordinateByteSize(),
(&amcl.Fp256bn{}).G1ByteSize(),
(&amcl.Fp256bn{}).CompressedG1ByteSize(),
(&amcl.Fp256bn{}).G2ByteSize(),
(&amcl.Fp256bn{}).CompressedG2ByteSize(),
(&amcl.Fp256bn{}).ScalarByteSize(),
FP256BN_AMCL,
),
{
c: gurvy.NewBn254(),
GenG1: &G1{g1: (&gurvy.Bn254{}).GenG1(), curveID: BN254},
GenG2: &G2{g2: (&gurvy.Bn254{}).GenG2(), curveID: BN254},
GenGt: &Gt{gt: (&gurvy.Bn254{}).GenGt(), curveID: BN254},
GroupOrder: &Zr{zr: gurvy.NewBn254().GroupOrder(), curveID: BN254},
GenG1: NewG1((&gurvy.Bn254{}).GenG1(), BN254),
GenG2: NewG2((&gurvy.Bn254{}).GenG2(), BN254),
GenGt: NewGt((&gurvy.Bn254{}).GenGt(), BN254),
GroupOrder: NewZr(gurvy.NewBn254().GroupOrder(), BN254),
CoordByteSize: (&gurvy.Bn254{}).CoordinateByteSize(),
G1ByteSize: (&gurvy.Bn254{}).G1ByteSize(),
CompressedG1ByteSize: (&gurvy.Bn254{}).CompressedG1ByteSize(),
Expand All @@ -86,10 +88,10 @@ var Curves []*Curve = []*Curve{
},
{
c: amcl.NewFp256Miraclbn(),
GenG1: &G1{g1: (&amcl.Fp256Miraclbn{}).GenG1(), curveID: FP256BN_AMCL_MIRACL},
GenG2: &G2{g2: (&amcl.Fp256Miraclbn{}).GenG2(), curveID: FP256BN_AMCL_MIRACL},
GenGt: &Gt{gt: (&amcl.Fp256Miraclbn{}).GenGt(), curveID: FP256BN_AMCL_MIRACL},
GroupOrder: &Zr{zr: amcl.NewFp256Miraclbn().GroupOrder(), curveID: FP256BN_AMCL_MIRACL},
GenG1: NewG1((&amcl.Fp256Miraclbn{}).GenG1(), FP256BN_AMCL_MIRACL),
GenG2: NewG2((&amcl.Fp256Miraclbn{}).GenG2(), FP256BN_AMCL_MIRACL),
GenGt: NewGt((&amcl.Fp256Miraclbn{}).GenGt(), FP256BN_AMCL_MIRACL),
GroupOrder: NewZr(amcl.NewFp256Miraclbn().GroupOrder(), FP256BN_AMCL_MIRACL),
CoordByteSize: (&amcl.Fp256Miraclbn{}).CoordinateByteSize(),
G1ByteSize: (&amcl.Fp256Miraclbn{}).G1ByteSize(),
CompressedG1ByteSize: (&amcl.Fp256Miraclbn{}).CompressedG1ByteSize(),
Expand All @@ -100,10 +102,10 @@ var Curves []*Curve = []*Curve{
},
{
c: kilic.NewBls12_381(),
GenG1: &G1{g1: (&kilic.Bls12_381{}).GenG1(), curveID: BLS12_381},
GenG2: &G2{g2: (&kilic.Bls12_381{}).GenG2(), curveID: BLS12_381},
GenGt: &Gt{gt: (&kilic.Bls12_381{}).GenGt(), curveID: BLS12_381},
GroupOrder: &Zr{zr: kilic.NewBls12_381().GroupOrder(), curveID: BLS12_381},
GenG1: NewG1((&kilic.Bls12_381{}).GenG1(), BLS12_381),
GenG2: NewG2((&kilic.Bls12_381{}).GenG2(), BLS12_381),
GenGt: NewGt((&kilic.Bls12_381{}).GenGt(), BLS12_381),
GroupOrder: NewZr(kilic.NewBls12_381().GroupOrder(), BLS12_381),
CoordByteSize: (&kilic.Bls12_381{}).CoordinateByteSize(),
G1ByteSize: (&kilic.Bls12_381{}).G1ByteSize(),
CompressedG1ByteSize: (&kilic.Bls12_381{}).CompressedG1ByteSize(),
Expand All @@ -114,10 +116,10 @@ var Curves []*Curve = []*Curve{
},
{
c: gurvy.NewBls12_377(),
GenG1: &G1{g1: (&gurvy.Bls12_377{}).GenG1(), curveID: BLS12_377_GURVY},
GenG2: &G2{g2: (&gurvy.Bls12_377{}).GenG2(), curveID: BLS12_377_GURVY},
GenGt: &Gt{gt: (&gurvy.Bls12_377{}).GenGt(), curveID: BLS12_377_GURVY},
GroupOrder: &Zr{zr: gurvy.NewBls12_377().GroupOrder(), curveID: BLS12_377_GURVY},
GenG1: NewG1((&gurvy.Bls12_377{}).GenG1(), BLS12_377_GURVY),
GenG2: NewG2((&gurvy.Bls12_377{}).GenG2(), BLS12_377_GURVY),
GenGt: NewGt((&gurvy.Bls12_377{}).GenGt(), BLS12_377_GURVY),
GroupOrder: NewZr(gurvy.NewBls12_377().GroupOrder(), BLS12_377_GURVY),
CoordByteSize: (&gurvy.Bls12_377{}).CoordinateByteSize(),
G1ByteSize: (&gurvy.Bls12_377{}).G1ByteSize(),
CompressedG1ByteSize: (&gurvy.Bls12_377{}).CompressedG1ByteSize(),
Expand All @@ -128,10 +130,10 @@ var Curves []*Curve = []*Curve{
},
{
c: gurvy.NewBls12_381(),
GenG1: &G1{g1: (&gurvy.Bls12_381{}).GenG1(), curveID: BLS12_381_GURVY},
GenG2: &G2{g2: (&gurvy.Bls12_381{}).GenG2(), curveID: BLS12_381_GURVY},
GenGt: &Gt{gt: (&gurvy.Bls12_381{}).GenGt(), curveID: BLS12_381_GURVY},
GroupOrder: &Zr{zr: gurvy.NewBls12_381().GroupOrder(), curveID: BLS12_381_GURVY},
GenG1: NewG1((&gurvy.Bls12_381{}).GenG1(), BLS12_381_GURVY),
GenG2: NewG2((&gurvy.Bls12_381{}).GenG2(), BLS12_381_GURVY),
GenGt: NewGt((&gurvy.Bls12_381{}).GenGt(), BLS12_381_GURVY),
GroupOrder: NewZr(gurvy.NewBls12_381().GroupOrder(), BLS12_381_GURVY),
CoordByteSize: (&gurvy.Bls12_381{}).CoordinateByteSize(),
G1ByteSize: (&gurvy.Bls12_381{}).G1ByteSize(),
CompressedG1ByteSize: (&gurvy.Bls12_381{}).CompressedG1ByteSize(),
Expand All @@ -142,10 +144,10 @@ var Curves []*Curve = []*Curve{
},
{
c: kilic.NewBls12_381BBS(),
GenG1: &G1{g1: kilic.NewBls12_381BBS().GenG1(), curveID: BLS12_381_BBS},
GenG2: &G2{g2: kilic.NewBls12_381BBS().GenG2(), curveID: BLS12_381_BBS},
GenGt: &Gt{gt: kilic.NewBls12_381BBS().GenGt(), curveID: BLS12_381_BBS},
GroupOrder: &Zr{zr: kilic.NewBls12_381().GroupOrder(), curveID: BLS12_381_BBS},
GenG1: NewG1(kilic.NewBls12_381BBS().GenG1(), BLS12_381_BBS),
GenG2: NewG2(kilic.NewBls12_381BBS().GenG2(), BLS12_381_BBS),
GenGt: NewGt(kilic.NewBls12_381BBS().GenGt(), BLS12_381_BBS),
GroupOrder: NewZr(kilic.NewBls12_381().GroupOrder(), BLS12_381_BBS),
CoordByteSize: kilic.NewBls12_381BBS().CoordinateByteSize(),
G1ByteSize: kilic.NewBls12_381BBS().G1ByteSize(),
CompressedG1ByteSize: kilic.NewBls12_381BBS().CompressedG1ByteSize(),
Expand All @@ -156,10 +158,10 @@ var Curves []*Curve = []*Curve{
},
{
c: gurvy.NewBls12_381BBS(),
GenG1: &G1{g1: gurvy.NewBls12_381BBS().GenG1(), curveID: BLS12_381_BBS_GURVY},
GenG2: &G2{g2: gurvy.NewBls12_381BBS().GenG2(), curveID: BLS12_381_BBS_GURVY},
GenGt: &Gt{gt: gurvy.NewBls12_381BBS().GenGt(), curveID: BLS12_381_BBS_GURVY},
GroupOrder: &Zr{zr: gurvy.NewBls12_381().GroupOrder(), curveID: BLS12_381_BBS_GURVY},
GenG1: NewG1(gurvy.NewBls12_381BBS().GenG1(), BLS12_381_BBS_GURVY),
GenG2: NewG2(gurvy.NewBls12_381BBS().GenG2(), BLS12_381_BBS_GURVY),
GenGt: NewGt(gurvy.NewBls12_381BBS().GenGt(), BLS12_381_BBS_GURVY),
GroupOrder: NewZr(gurvy.NewBls12_381().GroupOrder(), BLS12_381_BBS_GURVY),
CoordByteSize: gurvy.NewBls12_381BBS().CoordinateByteSize(),
G1ByteSize: gurvy.NewBls12_381BBS().G1ByteSize(),
CompressedG1ByteSize: gurvy.NewBls12_381BBS().CompressedG1ByteSize(),
Expand All @@ -177,6 +179,11 @@ type Zr struct {
curveID CurveID
}

// NewZr return a new Zr for the given arguments
func NewZr(zr driver.Zr, curveID CurveID) *Zr {
return &Zr{zr: zr, curveID: curveID}
}

func (z *Zr) CurveID() CurveID {
return z.curveID
}
Expand Down Expand Up @@ -257,6 +264,11 @@ type G1 struct {
curveID CurveID
}

// NewG1 return a new G1 for the given arguments
func NewG1(g1 driver.G1, curveID CurveID) *G1 {
return &G1{g1: g1, curveID: curveID}
}

func (g *G1) CurveID() CurveID {
return g.curveID
}
Expand Down Expand Up @@ -316,6 +328,11 @@ type G2 struct {
curveID CurveID
}

// NewG2 return a new G2 for the given arguments
func NewG2(g2 driver.G2, curveID CurveID) *G2 {
return &G2{g2: g2, curveID: curveID}
}

func (g *G2) CurveID() CurveID {
return g.curveID
}
Expand Down Expand Up @@ -367,6 +384,11 @@ type Gt struct {
curveID CurveID
}

// NewGt return a new Gt for the given arguments
func NewGt(gt driver.Gt, curveID CurveID) *Gt {
return &Gt{gt: gt, curveID: curveID}
}

func (g *Gt) CurveID() CurveID {
return g.curveID
}
Expand Down Expand Up @@ -416,6 +438,37 @@ type Curve struct {
curveID CurveID
}

// NewCurve returns a new instance of Curve for the given arguments
func NewCurve(
c driver.Curve,
genG1 *G1,
genG2 *G2,
genGt *Gt,
groupOrder *Zr,
coordByteSize int,
g1ByteSize int,
compressedG1ByteSize int,
g2ByteSize int,
compressedG2ByteSize int,
scalarByteSize int,
curveID CurveID,
) *Curve {
return &Curve{
c: c,
GenG1: genG1,
GenG2: genG2,
GenGt: genGt,
GroupOrder: groupOrder,
CoordByteSize: coordByteSize,
G1ByteSize: g1ByteSize,
CompressedG1ByteSize: compressedG1ByteSize,
G2ByteSize: g2ByteSize,
CompressedG2ByteSize: compressedG2ByteSize,
ScalarByteSize: scalarByteSize,
curveID: curveID,
}
}

func (c *Curve) Rand() (io.Reader, error) {
return c.c.Rand()
}
Expand Down