# How to display the usage flags for the encryption keys in a less hackish way

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I am trying to educate myself on the use of encryption keys and I've been experimenting with this old Linus Torvalds’ key that I found 956EB7BF449FA3AB.

I am interested to display the usage flags but neither gpg2 --list-keys 449FA3AB nor gpg2 --fingerprint 449FA3AB display the usage flags.

The only way I've found to get the usage flag information is this hackish way.

$gpg2 --edit-key 449FA3AB gpg (GnuPG) 2.0.26; Copyright (C) 2013 Free Software Foundation, Inc. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. pub 1024D/449FA3AB created: 1999-10-05 expired: 2001-10-04 usage: SCA trust: unknown validity: expired sub 2048g/BFF491C5 created: 1999-10-05 expired: 2001-10-04 usage: E [ expired] (1). Linus Torvalds <torvalds@transmeta.com> gpg> quit$


What is the official way to display the usage flags?

• The machine-readable format using --with-colons contains the usage flag as last column. It is not very readable for humans, but contains the data you're looking for.
\$ gpg2 --with-colons --list-keys 449FA3AB