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65 lines
1.3 KiB
65 lines
1.3 KiB
package edwards_curve
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import (
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"testing"
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"encoding/hex"
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"github.com/consensys/gnark/frontend"
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"github.com/consensys/gnark/test"
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)
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type Eddsa25519Circuit struct {
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m []frontend.Variable
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pk []frontend.Variable
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sig []frontend.Variable
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}
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func (circuit *Eddsa25519Circuit) Define(api frontend.API) error {
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c, err := New[Ed25519, Ed25519Scalars](api)
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if err != nil {
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return err
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}
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CheckValid(c, circuit.sig, circuit.m, circuit.pk)
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return nil
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}
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func TestEddsa25519(t *testing.T) {
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assert := test.NewAssert(t)
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m := "53756363696e6374204c616273"
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pk := "f7ec1c43f4de9d49556de87b86b26a98942cb078486fdb44de38b80864c39731"
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sig := "35c323757c20640a294345c89c0bfcebe3d554fdb0c7b7a0bdb72222c531b1ec849fed99a053e0f5b02dd9a25bb6eb018885526d9f583cdbde0b1e9f6329da09"
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circuit := Eddsa25519Circuit {
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m: hexToBits(m),
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pk: hexToBits(pk),
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sig: hexToBits(sig),
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}
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witness := Eddsa25519Circuit {
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m: hexToBits(m),
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pk: hexToBits(pk),
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sig: hexToBits(sig),
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}
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err := test.IsSolved(&circuit, &witness, testCurve.ScalarField())
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assert.NoError(err)
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}
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func hexToBits(h string) []frontend.Variable {
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b, err := hex.DecodeString(h)
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if err != nil {
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panic(err)
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}
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result := make([]frontend.Variable, len(b) * 8)
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for i, v := range b {
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for j := 0; j < 8; j++ {
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if (v & (1 << j)) != 0 {
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result[i*8+j] = 1
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} else {
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result[i*8+j] = 0
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}
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}
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}
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return result
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}
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