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sm9: add test cases

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Sun Yimin 2022-12-02 15:49:48 +08:00 committed by GitHub
parent 9c8836b2c6
commit d30cb1d1c8
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 61 additions and 0 deletions
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61
sm9/sm9_test.go
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@ -61,12 +61,48 @@ func TestSign(t *testing.T) {
if !Verify(masterKey.Public(), uid, hid, hashed, h, s) { if !Verify(masterKey.Public(), uid, hid, hashed, h, s) {
t.Errorf("Verify failed") t.Errorf("Verify failed")
} }
sNeg := new(bn256.G1).Neg(s)
if Verify(masterKey.Public(), uid, hid, hashed, h, sNeg) {
t.Errorf("Verify with s=-s succeeded")
}
hashed[0] ^= 0xff hashed[0] ^= 0xff
if Verify(masterKey.Public(), uid, hid, hashed, h, s) { if Verify(masterKey.Public(), uid, hid, hashed, h, s) {
t.Errorf("Verify always works!") t.Errorf("Verify always works!")
} }
} }
func TestNegativeInputs(t *testing.T) {
masterKey, err := GenerateSignMasterKey(rand.Reader)
hashed := []byte("Chinese IBS standard")
uid := []byte("emmansun")
hid := byte(0x01)
if err != nil {
t.Fatal(err)
}
h := new(big.Int).SetInt64(1)
h.Lsh(h, 550 /* larger than any supported curve */)
h.Neg(h)
if Verify(masterKey.Public(), uid, hid, hashed, h, bn256.Gen1) {
t.Errorf("bogus signature accepted")
}
}
func TestZeroSignature(t *testing.T) {
masterKey, err := GenerateSignMasterKey(rand.Reader)
hashed := []byte("Chinese IBS standard")
uid := []byte("emmansun")
hid := byte(0x01)
if err != nil {
t.Fatal(err)
}
if Verify(masterKey.Public(), uid, hid, hashed, big.NewInt(0), bn256.Gen1) {
t.Error("Verify with h=0 succeeded")
}
if Verify(masterKey.Public(), uid, hid, hashed, bn256.Order, bn256.Gen1) {
t.Error("Verify with h=order succeeded")
}
}
func TestSignASN1(t *testing.T) { func TestSignASN1(t *testing.T) {
masterKey, err := GenerateSignMasterKey(rand.Reader) masterKey, err := GenerateSignMasterKey(rand.Reader)
hashed := []byte("Chinese IBS standard") hashed := []byte("Chinese IBS standard")
@ -86,6 +122,31 @@ func TestSignASN1(t *testing.T) {
if !masterKey.Public().Verify(uid, hid, hashed, sig) { if !masterKey.Public().Verify(uid, hid, hashed, sig) {
t.Errorf("Verify failed") t.Errorf("Verify failed")
} }
sig[0] = 0xff
if masterKey.Public().Verify(uid, hid, hashed, sig) {
t.Errorf("Verify with invalid asn1 format successed")
}
}
func TestParseInvalidASN1(t *testing.T) {
tests := []struct {
name string
sigHex string
}{
// TODO: Add test cases.
{"invalid point format", "30660420723a8b38dd2441c2aa1c3ec092eaa34996c53bf9ca7515272395c012ab6e6e070342000C389fc45b711d9dfd9d91958f64d89d3528cf577c6dc2bc792c2969188e76865e16c2d85419f8f923a0e77c7f269c0eeb97b6c4d7e2735189180ec719a380fe1d"},
{"invalid point encoding length", "30660420723a8b38dd2441c2aa1c3ec092eaa34996c53bf9ca7515272395c012ab6e6e0703420004389fc45b711d9dfd9d91958f64d89d3528cf577c6dc2bc792c2969188e76865e16c2d85419f8f923a0e77c7f269c0eeb97b6c4d7e2735189180ec719a380fe"},
}
for _, tt := range tests {
sig, err := hex.DecodeString(tt.sigHex)
if err != nil {
t.Fatal(err)
}
_, _, err = parseSignature(sig)
if err == nil {
t.Errorf("%s should be failed", tt.name)
}
}
} }
// SM9 Appendix A // SM9 Appendix A