Do not return error on empty name or email key generation

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 - `DecryptMIMEMessage` will return the decrypted content in the `OnBody` callback, even when there's a signature verification error. That lets the caller decide whether they want to use the content with a warning or hard fail on signature errors.
+- Key generation functions no longer return an error if either the name or email is empty
 
 ## [2.4.6] 2022-03-25
 

crypto/key.go

@@ -438,12 +438,8 @@ func generateKey(
 	bits int,
 	prime1, prime2, prime3, prime4 []byte,
 ) (*Key, error) {
-	if len(email) == 0 {
-		return nil, errors.New("gopenpgp: invalid email format")
-	}
-
-	if len(name) == 0 {
-		return nil, errors.New("gopenpgp: invalid name format")
+	if len(email) == 0 && len(name) == 0 {
+		return nil, errors.New("gopenpgp: neither name nor email set.")
 	}
 
 	comments := ""