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// Copyright 2022 The Sigstore Authors.
//
// 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
import (
"crypto"
"crypto/ecdsa"
"crypto/ed25519"
"crypto/elliptic"
"crypto/rand"
"crypto/rsa"
"testing"
"github.com/sigstore/sigstore/pkg/signature/options"
)
func TestLoadUnsafeVerifier(t *testing.T) {
key, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatalf("unexpected error generating key: %v", err)
}
verifier, err := LoadUnsafeVerifier(key.Public())
if err != nil {
t.Fatalf("unexpected error loading verifier: %v", err)
}
pubKey, _ := verifier.PublicKey()
if !key.PublicKey.Equal(pubKey) {
t.Fatalf("public keys were not equal")
}
}
func TestLoadVerifier(t *testing.T) {
key, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatalf("unexpected error generating key: %v", err)
}
verifier, err := LoadVerifier(key.Public(), crypto.SHA256)
if err != nil {
t.Fatalf("unexpected error loading verifier: %v", err)
}
pubKey, _ := verifier.PublicKey()
if !key.PublicKey.Equal(pubKey) {
t.Fatalf("public keys were not equal")
}
}
func TestLoadDefaultVerifier(t *testing.T) {
tts := []struct {
name string
key func() crypto.PrivateKey
opts []LoadOption
expectedType string
}{
{
name: "rsa-2048",
key: func() crypto.PrivateKey {
rsaKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatalf("unexpected error creating rsa key: %v", err)
}
return rsaKey
},
expectedType: "rsa",
},
{
name: "rsa-2048-pss",
key: func() crypto.PrivateKey {
rsaKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatalf("unexpected error creating rsa key: %v", err)
}
return rsaKey
},
opts: []LoadOption{
options.WithRSAPSS(&rsa.PSSOptions{
Hash: crypto.SHA256,
}),
},
expectedType: "rsa-pss",
},
{
name: "ecdsa-p256",
key: func() crypto.PrivateKey {
ecdsaKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
if err != nil {
t.Fatalf("unexpected error creating ecdsa key: %v", err)
}
return ecdsaKey
},
expectedType: "ecdsa",
},
{
name: "ed25519",
key: func() crypto.PrivateKey {
_, priv, err := ed25519.GenerateKey(rand.Reader)
if err != nil {
t.Fatalf("unexpected error creating ed25519 key: %v", err)
}
return priv
},
expectedType: "ed25519",
},
{
name: "ed25519-ph",
key: func() crypto.PrivateKey {
_, priv, err := ed25519.GenerateKey(rand.Reader)
if err != nil {
t.Fatalf("unexpected error creating ed25519 key: %v", err)
}
return priv
},
opts: []LoadOption{
options.WithED25519ph(),
},
expectedType: "ed25519-ph",
},
}
for _, tt := range tts {
t.Run(tt.name, func(t *testing.T) {
privKey := tt.key()
signer, _ := privKey.(crypto.Signer)
pubKey := signer.Public()
sv, err := LoadDefaultVerifier(pubKey, tt.opts...)
if err != nil {
t.Fatalf("unexpected error creating verifier: %v", err)
}
switch tt.expectedType {
case "rsa":
if _, ok := sv.(*RSAPKCS1v15Verifier); !ok {
t.Fatalf("expected verifier to be an rsa verifier")
}
case "rsa-pss":
if _, ok := sv.(*RSAPSSVerifier); !ok {
t.Fatalf("expected verifier to be an rsa-pss verifier")
}
case "ecdsa":
if _, ok := sv.(*ECDSAVerifier); !ok {
t.Fatalf("expected verifier to be an ecdsa verifier")
}
case "ed25519":
if _, ok := sv.(*ED25519Verifier); !ok {
t.Fatalf("expected verifier to be an ed25519 verifier")
}
case "ed25519-ph":
if _, ok := sv.(*ED25519phVerifier); !ok {
t.Fatalf("expected verifier to be an ed25519-ph verifier")
}
}
})
}
}
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