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