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crypto: fix error check in toECDSA #15632

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Merged
fjl merged 1 commit into from
Dec 11, 2017
Merged

crypto: fix error check in toECDSA #15632

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3 changes: 3 additions & 0 deletions crypto/crypto.go
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Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,9 @@ func toECDSA(d []byte, strict bool) (*ecdsa.PrivateKey, error) {
}
priv.D = new(big.Int).SetBytes(d)
priv.PublicKey.X, priv.PublicKey.Y = priv.PublicKey.Curve.ScalarBaseMult(d)
if priv.PublicKey.X == nil {
return nil, errors.New("invalid private key")
}
return priv, nil
}

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9 changes: 9 additions & 0 deletions crypto/crypto_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,15 @@ func TestKeccak256Hash(t *testing.T) {
checkhash(t, "Sha3-256-array", func(in []byte) []byte { h := Keccak256Hash(in); return h[:] }, msg, exp)
}

func TestToECDSAErrors(t *testing.T) {
if _, err := HexToECDSA("0000000000000000000000000000000000000000000000000000000000000000"); err == nil {
t.Fatal("HexToECDSA should've returned error")
}
if _, err := HexToECDSA("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); err == nil {
t.Fatal("HexToECDSA should've returned error")
}
}

func BenchmarkSha3(b *testing.B) {
a := []byte("hello world")
for i := 0; i < b.N; i++ {
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