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// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ecdsa_test
import (
"testing"
"google.golang.org/protobuf/proto"
"github.com/tink-crypto/tink-go/v2/core/registry"
"github.com/tink-crypto/tink-go/v2/internal/protoserialization"
"github.com/tink-crypto/tink-go/v2/signature/ecdsa"
"github.com/tink-crypto/tink-go/v2/testutil"
"github.com/tink-crypto/tink-go/v2/tink"
commonpb "github.com/tink-crypto/tink-go/v2/proto/common_go_proto"
)
func TestVerifierKeyManagerGetPrimitiveBasic(t *testing.T) {
keyManager, err := registry.GetKeyManager(testutil.ECDSAVerifierTypeURL)
if err != nil {
t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", testutil.ECDSAVerifierTypeURL, err)
}
for _, tc := range primitiveTestVectors(t) {
if tc.publicKey.Parameters().(*ecdsa.Parameters).Variant() != ecdsa.VariantNoPrefix {
// Skip non-RAW test cases.
continue
}
t.Run(tc.name, func(t *testing.T) {
keySerialization, err := protoserialization.SerializeKey(tc.publicKey)
if err != nil {
t.Fatalf("protoserialization.SerializeKey(%v) err = %v, want nil", tc.publicKey, err)
}
p, err := keyManager.Primitive(keySerialization.KeyData().GetValue())
if err != nil {
t.Fatalf("keyManager.Primitive(keySerialization.KeyData().GetValue()) err = %v, want nil", err)
}
v, ok := p.(tink.Verifier)
if !ok {
t.Fatalf("keyManager.Primitive(keySerialization.KeyData().GetValue()) = %T, want %T", p, (tink.Verifier)(nil))
}
if err := v.Verify(tc.signature, tc.message); err != nil {
t.Errorf("v.Verify(tc.signature, tc.message) err = %v, want nil", err)
}
})
}
}
func TestVerifierKeyManagerWithInvalidPublicKeyFailsCreatingPrimitive(t *testing.T) {
keyManager, err := registry.GetKeyManager(testutil.ECDSAVerifierTypeURL)
if err != nil {
t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", testutil.ECDSAVerifierTypeURL, err)
}
pubKey := testutil.NewRandomECDSAPublicKey(commonpb.HashType_SHA256, commonpb.EllipticCurveType_NIST_P256)
pubKey.X = []byte{0, 32, 0}
pubKey.Y = []byte{0, 32, 0}
serializedPubKey, err := proto.Marshal(pubKey)
if err != nil {
t.Fatalf("proto.Marhsal() err = %v, want nil", err)
}
if _, err := keyManager.Primitive(serializedPubKey); err == nil {
t.Errorf("keyManager.Primitive() err = nil, want error")
}
}
func TestVerifierKeyManagerGetPrimitiveWithInvalidInput_InvalidParams(t *testing.T) {
testParams := genInvalidECDSAParams()
keyManager, err := registry.GetKeyManager(testutil.ECDSAVerifierTypeURL)
if err != nil {
t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", testutil.ECDSAVerifierTypeURL, err)
}
for i := 0; i < len(testParams); i++ {
serializedKey, err := proto.Marshal(testutil.NewRandomECDSAPublicKey(testParams[i].hashType, testParams[i].curve))
if err != nil {
t.Fatalf("proto.Marshal() err = %q, want nil", err)
}
if _, err := keyManager.Primitive(serializedKey); err == nil {
t.Errorf("expect an error in test case %d", i)
}
}
for _, tc := range genUnkownECDSAParams() {
k := testutil.NewRandomECDSAPublicKey(commonpb.HashType_SHA256, commonpb.EllipticCurveType_NIST_P256)
k.GetParams().Curve = tc.curve
k.GetParams().HashType = tc.hashType
serializedKey, err := proto.Marshal(k)
if err != nil {
t.Fatalf("proto.Marshal() err = %q, want nil", err)
}
if _, err := keyManager.Primitive(serializedKey); err == nil {
t.Errorf("expect an error in test case with params: (curve = %q, hash = %q)", tc.curve, tc.hashType)
}
}
}
func TestVerifierKeyManagerGetPrimitiveWithInvalidInput_InvalidVersion(t *testing.T) {
keyManager, err := registry.GetKeyManager(testutil.ECDSAVerifierTypeURL)
if err != nil {
t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", testutil.ECDSAVerifierTypeURL, err)
}
key := testutil.NewRandomECDSAPublicKey(commonpb.HashType_SHA256, commonpb.EllipticCurveType_NIST_P256)
key.Version = testutil.ECDSAVerifierKeyVersion + 1
serializedKey, err := proto.Marshal(key)
if err != nil {
t.Fatalf("proto.Marshal() err = %q, want nil", err)
}
if _, err = keyManager.Primitive(serializedKey); err == nil {
t.Errorf("expect an error when version is invalid")
}
}
func TestVerifierKeyManagerGetPrimitiveWithInvalidInput_NilInputAndParams(t *testing.T) {
keyManager, err := registry.GetKeyManager(testutil.ECDSAVerifierTypeURL)
if err != nil {
t.Fatalf("registry.GetKeyManager(%q) err = %v, want nil", testutil.ECDSAVerifierTypeURL, err)
}
// Nil or empty input.
if _, err := keyManager.Primitive(nil); err == nil {
t.Errorf("expect an error when input is nil")
}
if _, err := keyManager.Primitive([]byte{}); err == nil {
t.Errorf("expect an error when input is empty slice")
}
// Nil params.
keyNilParams := testutil.NewRandomECDSAPublicKey(commonpb.HashType_SHA256, commonpb.EllipticCurveType_NIST_P256)
keyNilParams.Params = nil
serializedKeyNilParams, err := proto.Marshal(keyNilParams)
if err != nil {
t.Errorf("proto.Marshal() err = %q, want nil", err)
}
if _, err := keyManager.Primitive(serializedKeyNilParams); err == nil {
t.Errorf("keyManager.Primitive(serializedKeyNilParams); err = nil, want non-nil")
}
}
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