for mask generation. Maybe the key was generated wrongly, or maybe the
version of Catacomb installed is too old.
.SP
+.BI "KEYMGMT " which "-keyring " file " key " tag " unknown-serialization-format " ser
+The key specifies the use of an unknown serialization format
+.I ser
+for hashing group elements. Maybe the key was generated wrongly, or
+maybe the version of Catacomb installed is too old.
+.SP
.BI "KEYMGMT " which "-keyring " file " key " tag " no-hmac-for-hash " hash
No message authentication code was given explicitly, and there's no
implementation of HMAC for the selected hash function