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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 signature_test
import (
"fmt"
"testing"
"github.com/tink-crypto/tink-go/v2/keyset"
"github.com/tink-crypto/tink-go/v2/signature"
tinkpb "github.com/tink-crypto/tink-go/v2/proto/tink_go_proto"
)
func TestKeyTemplates(t *testing.T) {
var testCases = []struct {
name string
template *tinkpb.KeyTemplate
}{
{name: "ECDSA_P256",
template: signature.ECDSAP256KeyTemplate()},
{name: "ECDSA_P384_SHA384",
template: signature.ECDSAP384SHA384KeyTemplate()},
{name: "ECDSA_P384_SHA512",
template: signature.ECDSAP384SHA512KeyTemplate()},
{name: "ECDSA_P521",
template: signature.ECDSAP521KeyTemplate()},
{name: "ECDSA_P256_RAW",
template: signature.ECDSAP256RawKeyTemplate()},
{name: "ECDSA_P256_NO_PREFIX",
template: signature.ECDSAP256KeyWithoutPrefixTemplate()},
{name: "ECDSA_P384_NO_PREFIX",
template: signature.ECDSAP384KeyWithoutPrefixTemplate()},
{name: "ECDSA_P384_SHA384_NO_PREFIX",
template: signature.ECDSAP384SHA384KeyWithoutPrefixTemplate()},
{name: "ECDSA_P521_NO_PREFIX",
template: signature.ECDSAP521KeyWithoutPrefixTemplate()},
{name: "RSA_SSA_PKCS1_3072_SHA256_F4",
template: signature.RSA_SSA_PKCS1_3072_SHA256_F4_Key_Template()},
{name: "RSA_SSA_PKCS1_3072_SHA256_F4_RAW",
template: signature.RSA_SSA_PKCS1_3072_SHA256_F4_RAW_Key_Template()},
{name: "RSA_SSA_PKCS1_4096_SHA512_F4",
template: signature.RSA_SSA_PKCS1_4096_SHA512_F4_Key_Template()},
{name: "RSA_SSA_PKCS1_4096_SHA512_F4_RAW",
template: signature.RSA_SSA_PKCS1_4096_SHA512_F4_RAW_Key_Template()},
{name: "RSA_SSA_PSS_3072_SHA256_32_F4",
template: signature.RSA_SSA_PSS_3072_SHA256_32_F4_Key_Template()},
{name: "RSA_SSA_PSS_3072_SHA256_32_F4_RAW",
template: signature.RSA_SSA_PSS_3072_SHA256_32_F4_Raw_Key_Template()},
{name: "RSA_SSA_PSS_4096_SHA512_64_F4",
template: signature.RSA_SSA_PSS_4096_SHA512_64_F4_Key_Template()},
{name: "RSA_SSA_PSS_4096_SHA512_64_F4_RAW",
template: signature.RSA_SSA_PSS_4096_SHA512_64_F4_Raw_Key_Template()},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
if err := testSignVerify(tc.template); err != nil {
t.Error(err)
}
})
}
}
func testSignVerify(template *tinkpb.KeyTemplate) error {
privateHandle, err := keyset.NewHandle(template)
if err != nil {
return fmt.Errorf("keyset.NewHandle(tc.template) failed: %s", err)
}
signer, err := signature.NewSigner(privateHandle)
if err != nil {
return fmt.Errorf("signature.NewSigner(privateHandle) failed: %s", err)
}
publicHandle, err := privateHandle.Public()
if err != nil {
return fmt.Errorf("privateHandle.Public() failed: %s", err)
}
verifier, err := signature.NewVerifier(publicHandle)
if err != nil {
return fmt.Errorf("signature.NewVerifier(publicHandle) failed: %s", err)
}
var testInputs = []struct {
message1 []byte
message2 []byte
}{
{
message1: []byte("this data needs to be signed"),
message2: []byte("this data needs to be signed"),
}, {
message1: []byte(""),
message2: []byte(""),
}, {
message1: []byte(""),
message2: nil,
}, {
message1: nil,
message2: []byte(""),
}, {
message1: nil,
message2: nil,
},
}
for _, ti := range testInputs {
sig, err := signer.Sign(ti.message1)
if err != nil {
return fmt.Errorf("signer.Sign(ti.message1) failed: %s", err)
}
if err := verifier.Verify(sig, ti.message2); err != nil {
return fmt.Errorf("verifier.Verify(sig, ti.message2) failed: %s", err)
}
}
return nil
}
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