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88 lines
2.3 KiB
88 lines
2.3 KiB
package babyjub
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import (
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"crypto/rand"
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"encoding/hex"
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"fmt"
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"github.com/stretchr/testify/assert"
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"math/big"
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"testing"
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)
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func genInputs() (*PrivateKey, *big.Int) {
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k := NewRandPrivKey()
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fmt.Println("k", hex.EncodeToString(k[:]))
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msgBuf := [32]byte{}
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rand.Read(msgBuf[:])
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msg := SetBigIntFromLEBytes(new(big.Int), msgBuf[:])
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msg.Mod(msg, Q)
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fmt.Println("msg", msg)
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return &k, msg
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}
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func TestSignVerify1(t *testing.T) {
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var k PrivateKey
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hex.Decode(k[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
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msgBuf, err := hex.DecodeString("00010203040506070809")
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if err != nil {
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panic(err)
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}
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msg := SetBigIntFromLEBytes(new(big.Int), msgBuf)
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pk := k.Public()
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assert.Equal(t,
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"2610057752638682202795145288373380503107623443963127956230801721756904484787",
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pk.X.String())
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assert.Equal(t,
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"16617171478497210597712478520507818259149717466230047843969353176573634386897",
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pk.Y.String())
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sig := k.SignMimc7(msg)
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assert.Equal(t,
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"4974729414807584049518234760796200867685098748448054182902488636762478901554",
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sig.R8.X.String())
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assert.Equal(t,
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"18714049394522540751536514815950425694461287643205706667341348804546050128733",
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sig.R8.Y.String())
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assert.Equal(t,
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"2171284143457722024136077617757713039502332290425057126942676527240038689549",
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sig.S.String())
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ok := pk.VerifyMimc7(msg, sig)
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assert.Equal(t, true, ok)
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sigBuf := sig.Compress()
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sig2, err := new(Signature).Decompress(sigBuf)
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assert.Equal(t, nil, err)
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assert.Equal(t, ""+
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"5dfb6f843c023fe3e52548ccf22e55c81b426f7af81b4f51f7152f2fcfc65f29"+
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"0dab19c5a0a75973cd75a54780de0c3a41ede6f57396fe99b5307fff3ce7cc04",
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hex.EncodeToString(sigBuf[:]))
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ok = pk.VerifyMimc7(msg, sig2)
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assert.Equal(t, true, ok)
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}
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func TestCompressDecompress(t *testing.T) {
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var k PrivateKey
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hex.Decode(k[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
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pk := k.Public()
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for i := 0; i < 64; i++ {
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msgBuf, err := hex.DecodeString(fmt.Sprintf("000102030405060708%02d", i))
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if err != nil {
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panic(err)
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}
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msg := SetBigIntFromLEBytes(new(big.Int), msgBuf)
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sig := k.SignMimc7(msg)
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sigBuf := sig.Compress()
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sig2, err := new(Signature).Decompress(sigBuf)
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assert.Equal(t, nil, err)
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ok := pk.VerifyMimc7(msg, sig2)
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assert.Equal(t, true, ok)
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}
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}
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