OwnerTrust is an OpenPGPConcept that describes your level of trust in the owner of a specific PGP/GPG key to correctly and reliably perform KeyVerification? tasks before SigningAKey.
The OpenPGP Standard defines 5 possible owner trust levels
| Trust Level | Description | Designator |
| Not Calculated | No OwnerTrust value yet assigned or calculated. | - |
| None | Never trust this keyholder to correctly verify others signatures. | n |
| Marginal | Have marginal trust in the keyholders capability to sign other keys | m |
| Full | Assume that the key holder really knows how to sign keys. | f |
| Ultimate | Only used for keys that you own yourself | u |
As a general rule, you will trust most key owners Marginally, while you few of your good, long term trusted friends will by Fully trusted. You should never assign Ultimate trust to a keyholder other than yourself.
gpg does not automatically prompt you to assign trust to keys in your keyring. To update your trust values use the --update-trust-db option from the command line, or the trust command within the --edit-key prompt.
When listing keys, the OwnerTrust value is shown as the letter before the / in the trust output.
Part of CategoryCryptography
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