ceremonyclient/go-libp2p/core/crypto/fixture_test.go

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2023-08-21 03:50:38 +00:00
package crypto_test
import (
"bytes"
"crypto/rand"
"fmt"
"io"
"os"
"testing"
"github.com/libp2p/go-libp2p/core/crypto"
crypto_pb "github.com/libp2p/go-libp2p/core/crypto/pb"
)
var message = []byte("Libp2p is the _best_!")
type testCase struct {
keyType crypto_pb.KeyType
gen func(i io.Reader) (crypto.PrivKey, crypto.PubKey, error)
sigDeterministic bool
}
var keyTypes = []testCase{
{
keyType: crypto_pb.KeyType_ECDSA,
gen: crypto.GenerateECDSAKeyPair,
},
{
keyType: crypto_pb.KeyType_Secp256k1,
sigDeterministic: true,
gen: crypto.GenerateSecp256k1Key,
},
{
keyType: crypto_pb.KeyType_RSA,
sigDeterministic: true,
gen: func(i io.Reader) (crypto.PrivKey, crypto.PubKey, error) {
return crypto.GenerateRSAKeyPair(2048, i)
},
},
}
func fname(kt crypto_pb.KeyType, ext string) string {
return fmt.Sprintf("test_data/%d.%s", kt, ext)
}
func TestFixtures(t *testing.T) {
for _, tc := range keyTypes {
t.Run(tc.keyType.String(), func(t *testing.T) {
pubBytes, err := os.ReadFile(fname(tc.keyType, "pub"))
if err != nil {
t.Fatal(err)
}
privBytes, err := os.ReadFile(fname(tc.keyType, "priv"))
if err != nil {
t.Fatal(err)
}
sigBytes, err := os.ReadFile(fname(tc.keyType, "sig"))
if err != nil {
t.Fatal(err)
}
pub, err := crypto.UnmarshalPublicKey(pubBytes)
if err != nil {
t.Fatal(err)
}
pubBytes2, err := crypto.MarshalPublicKey(pub)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(pubBytes2, pubBytes) {
t.Fatal("encoding round-trip failed")
}
priv, err := crypto.UnmarshalPrivateKey(privBytes)
if err != nil {
t.Fatal(err)
}
privBytes2, err := crypto.MarshalPrivateKey(priv)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(privBytes2, privBytes) {
t.Fatal("encoding round-trip failed")
}
ok, err := pub.Verify(message, sigBytes)
if !ok || err != nil {
t.Fatal("failed to validate signature with public key")
}
if tc.sigDeterministic {
sigBytes2, err := priv.Sign(message)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(sigBytes2, sigBytes) {
t.Fatal("signature not deterministic")
}
}
})
}
}
func init() {
// set to true to re-generate test data
if false {
generate()
panic("generated")
}
}
// generate re-generates test data
func generate() {
for _, tc := range keyTypes {
priv, pub, err := tc.gen(rand.Reader)
if err != nil {
panic(err)
}
pubb, err := crypto.MarshalPublicKey(pub)
if err != nil {
panic(err)
}
privb, err := crypto.MarshalPrivateKey(priv)
if err != nil {
panic(err)
}
sig, err := priv.Sign(message)
if err != nil {
panic(err)
}
os.WriteFile(fname(tc.keyType, "pub"), pubb, 0666)
os.WriteFile(fname(tc.keyType, "priv"), privb, 0666)
os.WriteFile(fname(tc.keyType, "sig"), sig, 0666)
}
}