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564 lines
12 KiB
564 lines
12 KiB
package utils
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import (
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"errors"
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"math/big"
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snark "github.com/arnaucube/go-snark"
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"github.com/arnaucube/go-snark/circuitcompiler"
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"github.com/arnaucube/go-snark/groth16"
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)
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// []*big.Int
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func ArrayBigIntToString(b []*big.Int) []string {
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var o []string
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for i := 0; i < len(b); i++ {
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o = append(o, b[i].String())
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}
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return o
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}
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func ArrayStringToBigInt(s []string) ([]*big.Int, error) {
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var px []*big.Int
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for i := 0; i < len(s); i++ {
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param, ok := new(big.Int).SetString(s[i], 10)
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if !ok {
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return nil, errors.New("error parsing px from pxString")
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}
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px = append(px, param)
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}
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return px, nil
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}
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// [3]*big.Int
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func String3ToBigInt(s [3]string) ([3]*big.Int, error) {
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var o [3]*big.Int
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for i := 0; i < len(s); i++ {
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param, ok := new(big.Int).SetString(s[i], 10)
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if !ok {
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return o, errors.New("error parsing [3]*big.Int from [3]string")
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}
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o[i] = param
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}
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return o, nil
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}
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func BigInt3ToString(b [3]*big.Int) [3]string {
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var o [3]string
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o[0] = b[0].String()
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o[1] = b[1].String()
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o[2] = b[2].String()
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return o
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}
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// [][3]*big.Int
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func Array3StringToBigInt(s [][3]string) ([][3]*big.Int, error) {
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var o [][3]*big.Int
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for i := 0; i < len(s); i++ {
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parsed, err := String3ToBigInt(s[i])
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if err != nil {
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return o, err
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}
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o = append(o, parsed)
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}
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return o, nil
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}
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func Array3BigIntToString(b [][3]*big.Int) [][3]string {
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var o [][3]string
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for i := 0; i < len(b); i++ {
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o = append(o, BigInt3ToString(b[i]))
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}
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return o
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}
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func String2ToBigInt(s [2]string) ([2]*big.Int, error) {
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var o [2]*big.Int
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for i := 0; i < len(s); i++ {
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param, ok := new(big.Int).SetString(s[i], 10)
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if !ok {
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return o, errors.New("error parsing [2]*big.Int from [2]string")
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}
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o[i] = param
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}
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return o, nil
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}
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// [3][2]*big.Int
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func String32ToBigInt(s [3][2]string) ([3][2]*big.Int, error) {
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var o [3][2]*big.Int
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var err error
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o[0], err = String2ToBigInt(s[0])
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if err != nil {
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return o, err
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}
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o[1], err = String2ToBigInt(s[1])
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if err != nil {
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return o, err
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}
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o[2], err = String2ToBigInt(s[2])
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if err != nil {
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return o, err
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}
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return o, nil
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}
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func BigInt32ToString(b [3][2]*big.Int) [3][2]string {
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var o [3][2]string
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o[0][0] = b[0][0].String()
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o[0][1] = b[0][1].String()
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o[1][0] = b[1][0].String()
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o[1][1] = b[1][1].String()
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o[2][0] = b[2][0].String()
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o[2][1] = b[2][1].String()
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return o
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}
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// [][3][2]*big.Int
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func Array32StringToBigInt(s [][3][2]string) ([][3][2]*big.Int, error) {
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var o [][3][2]*big.Int
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for i := 0; i < len(s); i++ {
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parsed, err := String32ToBigInt(s[i])
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if err != nil {
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return o, err
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}
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o = append(o, parsed)
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}
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return o, nil
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}
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func Array32BigIntToString(b [][3][2]*big.Int) [][3][2]string {
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var o [][3][2]string
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for i := 0; i < len(b); i++ {
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o = append(o, BigInt32ToString(b[i]))
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}
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return o
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}
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// Setup
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type SetupString struct {
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// public
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G1T [][3]string
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G2T [][3][2]string
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Pk struct {
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A [][3]string
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B [][3][2]string
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C [][3]string
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Kp [][3]string
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Ap [][3]string
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Bp [][3]string
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Cp [][3]string
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Z []string
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}
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Vk struct {
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Vka [3][2]string
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Vkb [3]string
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Vkc [3][2]string
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IC [][3]string
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G1Kbg [3]string
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G2Kbg [3][2]string
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G2Kg [3][2]string
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Vkz [3][2]string
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}
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}
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func SetupToString(setup snark.Setup) SetupString {
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var s SetupString
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s.G1T = Array3BigIntToString(setup.G1T)
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s.G2T = Array32BigIntToString(setup.G2T)
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s.Pk.A = Array3BigIntToString(setup.Pk.A)
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s.Pk.B = Array32BigIntToString(setup.Pk.B)
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s.Pk.C = Array3BigIntToString(setup.Pk.C)
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s.Pk.Kp = Array3BigIntToString(setup.Pk.Kp)
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s.Pk.Ap = Array3BigIntToString(setup.Pk.Ap)
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s.Pk.Bp = Array3BigIntToString(setup.Pk.Bp)
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s.Pk.Cp = Array3BigIntToString(setup.Pk.Cp)
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s.Pk.Z = ArrayBigIntToString(setup.Pk.Z)
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s.Vk.Vka = BigInt32ToString(setup.Vk.Vka)
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s.Vk.Vkb = BigInt3ToString(setup.Vk.Vkb)
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s.Vk.Vkc = BigInt32ToString(setup.Vk.Vkc)
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s.Vk.IC = Array3BigIntToString(setup.Vk.IC)
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s.Vk.G1Kbg = BigInt3ToString(setup.Vk.G1Kbg)
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s.Vk.G2Kbg = BigInt32ToString(setup.Vk.G2Kbg)
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s.Vk.G2Kg = BigInt32ToString(setup.Vk.G2Kg)
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s.Vk.Vkz = BigInt32ToString(setup.Vk.Vkz)
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return s
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}
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func SetupFromString(s SetupString) (snark.Setup, error) {
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var o snark.Setup
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var err error
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o.G1T, err = Array3StringToBigInt(s.G1T)
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if err != nil {
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return o, err
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}
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o.G2T, err = Array32StringToBigInt(s.G2T)
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if err != nil {
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return o, err
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}
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o.Pk.A, err = Array3StringToBigInt(s.Pk.A)
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if err != nil {
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return o, err
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}
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o.Pk.B, err = Array32StringToBigInt(s.Pk.B)
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if err != nil {
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return o, err
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}
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o.Pk.C, err = Array3StringToBigInt(s.Pk.C)
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if err != nil {
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return o, err
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}
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o.Pk.Kp, err = Array3StringToBigInt(s.Pk.Kp)
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if err != nil {
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return o, err
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}
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o.Pk.Ap, err = Array3StringToBigInt(s.Pk.Ap)
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if err != nil {
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return o, err
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}
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o.Pk.Bp, err = Array3StringToBigInt(s.Pk.Bp)
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if err != nil {
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return o, err
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}
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o.Pk.Cp, err = Array3StringToBigInt(s.Pk.Cp)
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if err != nil {
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return o, err
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}
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o.Pk.Z, err = ArrayStringToBigInt(s.Pk.Z)
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if err != nil {
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return o, err
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}
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o.Vk.Vka, err = String32ToBigInt(s.Vk.Vka)
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if err != nil {
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return o, err
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}
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o.Vk.Vkb, err = String3ToBigInt(s.Vk.Vkb)
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if err != nil {
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return o, err
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}
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o.Vk.Vkc, err = String32ToBigInt(s.Vk.Vkc)
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if err != nil {
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return o, err
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}
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o.Vk.IC, err = Array3StringToBigInt(s.Vk.IC)
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if err != nil {
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return o, err
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}
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o.Vk.G1Kbg, err = String3ToBigInt(s.Vk.G1Kbg)
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if err != nil {
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return o, err
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}
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o.Vk.G2Kbg, err = String32ToBigInt(s.Vk.G2Kbg)
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if err != nil {
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return o, err
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}
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o.Vk.G2Kg, err = String32ToBigInt(s.Vk.G2Kg)
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if err != nil {
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return o, err
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}
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o.Vk.Vkz, err = String32ToBigInt(s.Vk.Vkz)
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if err != nil {
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return o, err
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}
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return o, nil
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}
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// circuit
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type CircuitString struct {
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NVars int
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NPublic int
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NSignals int
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PrivateInputs []string
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PublicInputs []string
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Signals []string
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Witness []string
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Constraints []circuitcompiler.Constraint
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R1CS struct {
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A [][]string
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B [][]string
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C [][]string
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}
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}
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func ArrayArrayBigIntToString(b [][]*big.Int) [][]string {
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var o [][]string
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for i := 0; i < len(b); i++ {
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o = append(o, ArrayBigIntToString(b[i]))
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}
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return o
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}
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func ArrayArrayStringToBigInt(s [][]string) ([][]*big.Int, error) {
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var o [][]*big.Int
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for i := 0; i < len(s); i++ {
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parsed, err := ArrayStringToBigInt(s[i])
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if err != nil {
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return o, err
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}
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o = append(o, parsed)
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}
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return o, nil
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}
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func CircuitToString(c circuitcompiler.Circuit) CircuitString {
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var cs CircuitString
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cs.NVars = c.NVars
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cs.NPublic = c.NPublic
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cs.NSignals = c.NSignals
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cs.PrivateInputs = c.PrivateInputs
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cs.PublicInputs = c.PublicInputs
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cs.Signals = c.Signals
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cs.Witness = ArrayBigIntToString(c.Witness)
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cs.Constraints = c.Constraints
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cs.R1CS.A = ArrayArrayBigIntToString(c.R1CS.A)
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cs.R1CS.B = ArrayArrayBigIntToString(c.R1CS.B)
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cs.R1CS.C = ArrayArrayBigIntToString(c.R1CS.C)
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return cs
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}
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func CircuitFromString(cs CircuitString) (circuitcompiler.Circuit, error) {
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var c circuitcompiler.Circuit
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var err error
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c.NVars = cs.NVars
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c.NPublic = cs.NPublic
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c.NSignals = cs.NSignals
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c.PrivateInputs = cs.PrivateInputs
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c.PublicInputs = cs.PublicInputs
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c.Signals = cs.Signals
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c.Witness, err = ArrayStringToBigInt(cs.Witness)
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if err != nil {
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return c, err
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}
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c.Constraints = cs.Constraints
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c.R1CS.A, err = ArrayArrayStringToBigInt(cs.R1CS.A)
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if err != nil {
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return c, err
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}
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c.R1CS.B, err = ArrayArrayStringToBigInt(cs.R1CS.B)
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if err != nil {
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return c, err
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}
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c.R1CS.C, err = ArrayArrayStringToBigInt(cs.R1CS.C)
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if err != nil {
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return c, err
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}
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return c, nil
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}
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// Proof
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type ProofString struct {
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PiA [3]string
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PiAp [3]string
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PiB [3][2]string
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PiBp [3]string
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PiC [3]string
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PiCp [3]string
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PiH [3]string
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PiKp [3]string
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}
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func ProofToString(p snark.Proof) ProofString {
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var s ProofString
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s.PiA = BigInt3ToString(p.PiA)
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s.PiAp = BigInt3ToString(p.PiAp)
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s.PiB = BigInt32ToString(p.PiB)
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s.PiBp = BigInt3ToString(p.PiBp)
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s.PiC = BigInt3ToString(p.PiC)
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s.PiCp = BigInt3ToString(p.PiCp)
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s.PiH = BigInt3ToString(p.PiH)
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s.PiKp = BigInt3ToString(p.PiKp)
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return s
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}
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func ProofFromString(s ProofString) (snark.Proof, error) {
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var p snark.Proof
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var err error
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p.PiA, err = String3ToBigInt(s.PiA)
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if err != nil {
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return p, err
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}
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p.PiAp, err = String3ToBigInt(s.PiAp)
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if err != nil {
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return p, err
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}
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p.PiB, err = String32ToBigInt(s.PiB)
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if err != nil {
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return p, err
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}
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p.PiBp, err = String3ToBigInt(s.PiBp)
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if err != nil {
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return p, err
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}
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p.PiC, err = String3ToBigInt(s.PiC)
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if err != nil {
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return p, err
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}
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p.PiCp, err = String3ToBigInt(s.PiCp)
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if err != nil {
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return p, err
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}
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p.PiH, err = String3ToBigInt(s.PiH)
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if err != nil {
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return p, err
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}
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p.PiKp, err = String3ToBigInt(s.PiKp)
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if err != nil {
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return p, err
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}
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return p, nil
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}
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// groth
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type GrothSetupString struct {
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Pk struct { // Proving Key
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BACDelta [][3]string
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Z []string
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G1 struct {
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Alpha [3]string
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Beta [3]string
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Delta [3]string
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At [][3]string
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BACGamma [][3]string
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}
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G2 struct {
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Beta [3][2]string
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Gamma [3][2]string
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Delta [3][2]string
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BACGamma [][3][2]string
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}
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PowersTauDelta [][3]string
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}
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Vk struct {
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IC [][3]string
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G1 struct {
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Alpha [3]string
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}
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G2 struct {
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Beta [3][2]string
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Gamma [3][2]string
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Delta [3][2]string
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}
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}
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}
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func GrothSetupToString(setup groth16.Setup) GrothSetupString {
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var s GrothSetupString
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s.Pk.BACDelta = Array3BigIntToString(setup.Pk.BACDelta)
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s.Pk.Z = ArrayBigIntToString(setup.Pk.Z)
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s.Pk.G1.Alpha = BigInt3ToString(setup.Pk.G1.Alpha)
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s.Pk.G1.Beta = BigInt3ToString(setup.Pk.G1.Beta)
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s.Pk.G1.Delta = BigInt3ToString(setup.Pk.G1.Delta)
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s.Pk.G1.At = Array3BigIntToString(setup.Pk.G1.At)
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s.Pk.G1.BACGamma = Array3BigIntToString(setup.Pk.G1.BACGamma)
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s.Pk.G2.Beta = BigInt32ToString(setup.Pk.G2.Beta)
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s.Pk.G2.Gamma = BigInt32ToString(setup.Pk.G2.Gamma)
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s.Pk.G2.Delta = BigInt32ToString(setup.Pk.G2.Delta)
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s.Pk.G2.BACGamma = Array32BigIntToString(setup.Pk.G2.BACGamma)
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s.Pk.PowersTauDelta = Array3BigIntToString(setup.Pk.PowersTauDelta)
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s.Vk.IC = Array3BigIntToString(setup.Vk.IC)
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s.Vk.G1.Alpha = BigInt3ToString(setup.Vk.G1.Alpha)
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s.Vk.G2.Beta = BigInt32ToString(setup.Vk.G2.Beta)
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s.Vk.G2.Gamma = BigInt32ToString(setup.Vk.G2.Gamma)
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s.Vk.G2.Delta = BigInt32ToString(setup.Vk.G2.Delta)
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return s
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}
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func GrothSetupFromString(s GrothSetupString) (groth16.Setup, error) {
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var o groth16.Setup
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var err error
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o.Pk.BACDelta, err = Array3StringToBigInt(s.Pk.BACDelta)
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if err != nil {
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return o, err
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}
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o.Pk.Z, err = ArrayStringToBigInt(s.Pk.Z)
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if err != nil {
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return o, err
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}
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o.Pk.G1.Alpha, err = String3ToBigInt(s.Pk.G1.Alpha)
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if err != nil {
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return o, err
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}
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o.Pk.G1.Beta, err = String3ToBigInt(s.Pk.G1.Beta)
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if err != nil {
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return o, err
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}
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o.Pk.G1.Delta, err = String3ToBigInt(s.Pk.G1.Delta)
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if err != nil {
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return o, err
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}
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o.Pk.G1.At, err = Array3StringToBigInt(s.Pk.G1.At)
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if err != nil {
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return o, err
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}
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o.Pk.G1.BACGamma, err = Array3StringToBigInt(s.Pk.G1.BACGamma)
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if err != nil {
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|
return o, err
|
|
}
|
|
o.Pk.G2.Beta, err = String32ToBigInt(s.Pk.G2.Beta)
|
|
if err != nil {
|
|
return o, err
|
|
}
|
|
o.Pk.G2.Gamma, err = String32ToBigInt(s.Pk.G2.Gamma)
|
|
if err != nil {
|
|
return o, err
|
|
}
|
|
o.Pk.G2.Delta, err = String32ToBigInt(s.Pk.G2.Delta)
|
|
if err != nil {
|
|
return o, err
|
|
}
|
|
o.Pk.G2.BACGamma, err = Array32StringToBigInt(s.Pk.G2.BACGamma)
|
|
if err != nil {
|
|
return o, err
|
|
}
|
|
o.Pk.PowersTauDelta, err = Array3StringToBigInt(s.Pk.PowersTauDelta)
|
|
if err != nil {
|
|
return o, err
|
|
}
|
|
o.Vk.IC, err = Array3StringToBigInt(s.Vk.IC)
|
|
if err != nil {
|
|
return o, err
|
|
}
|
|
o.Vk.G1.Alpha, err = String3ToBigInt(s.Vk.G1.Alpha)
|
|
if err != nil {
|
|
return o, err
|
|
}
|
|
o.Vk.G2.Beta, err = String32ToBigInt(s.Vk.G2.Beta)
|
|
if err != nil {
|
|
return o, err
|
|
}
|
|
o.Vk.G2.Gamma, err = String32ToBigInt(s.Vk.G2.Gamma)
|
|
if err != nil {
|
|
return o, err
|
|
}
|
|
o.Vk.G2.Delta, err = String32ToBigInt(s.Vk.G2.Delta)
|
|
if err != nil {
|
|
return o, err
|
|
}
|
|
return o, nil
|
|
}
|
|
|
|
type GrothProofString struct {
|
|
PiA [3]string
|
|
PiB [3][2]string
|
|
PiC [3]string
|
|
}
|
|
|
|
func GrothProofToString(p groth16.Proof) GrothProofString {
|
|
var s GrothProofString
|
|
s.PiA = BigInt3ToString(p.PiA)
|
|
s.PiB = BigInt32ToString(p.PiB)
|
|
s.PiC = BigInt3ToString(p.PiC)
|
|
return s
|
|
}
|
|
func GrothProofFromString(s GrothProofString) (groth16.Proof, error) {
|
|
var p groth16.Proof
|
|
var err error
|
|
|
|
p.PiA, err = String3ToBigInt(s.PiA)
|
|
if err != nil {
|
|
return p, err
|
|
}
|
|
p.PiB, err = String32ToBigInt(s.PiB)
|
|
if err != nil {
|
|
return p, err
|
|
}
|
|
p.PiC, err = String3ToBigInt(s.PiC)
|
|
if err != nil {
|
|
return p, err
|
|
}
|
|
return p, nil
|
|
}
|