Remove unused getCreationMethod()

crypto/signature.go

@@ -15,7 +15,6 @@ import (
 
 	"github.com/ProtonMail/gopenpgp/v2/constants"
 	"github.com/ProtonMail/gopenpgp/v2/internal"
-	goerrors "github.com/pkg/errors"
 )
 
 var allowedHashes = []crypto.Hash{
@@ -160,16 +159,3 @@ func verifySignature(pubKeyEntries openpgp.EntityList, origText io.Reader, signa
 
 	return nil
 }
-
-func (sig *PGPSignature) getCreationTime() (int64, error) {
-	packets := packet.NewReader(bytes.NewReader(sig.Data))
-	p, err := packets.Next()
-	if err != nil {
-		return 0, goerrors.Wrap(err, "gopenpgp: Can't parse signature")
-	}
-	sigPacket, ok := p.(*packet.Signature)
-	if !ok {
-		return 0, errors.New("gopenpgp: non signature packet found")
-	}
-	return sigPacket.CreationTime.Unix(), nil
-}

crypto/signature_test.go

@@ -74,26 +74,6 @@ func TestVerifyBinDetachedSig(t *testing.T) {
 	}
 }
 
-func Test_Signature_getSignatureCreationTime(t *testing.T) {
-	message := NewPlainMessageFromString("Hello world!")
-	var time int64 = 1600000000
-	pgp.latestServerTime = time
-	defer func() {
-		pgp.latestServerTime = testTime
-	}()
-	signature, err := keyRingTestPrivate.SignDetached(message)
-	if err != nil {
-		t.Errorf("Got an error while generating the signature: %v", err)
-	}
-	actualTime, err := signature.getCreationTime()
-	if err != nil {
-		t.Errorf("Got an error while parsing the signature creation time: %v", err)
-	}
-	if time != actualTime {
-		t.Errorf("Expected creation time to be %d, got %d", time, actualTime)
-	}
-}
-
 func Test_KeyRing_GetVerifiedSignatureTimestampSuccess(t *testing.T) {
 	message := NewPlainMessageFromString("Hello world!")
 	var time int64 = 1600000000