| "verification_status" | string | Signature verification status, either "Success" string or appropriate error message. | 
   
    | "creation_time" | integer | Signature creation time in seconds since Jan, 1 1970 UTC. | 
   
    | "expiration_time" | integer | Signature expiration time in seconds since the creation time or 0 if signature never expires. | 
   
    | "hash" | string | Hash function algorithm used to calculate the signature. | 
   
    | "signing_key" | string | Fingerprint of the key used for signing. Could be "Not found" if corresponding public key is not loaded to the FFI object. | 
   
    | "signature_type" | string | Signature type. Currently defined values are: 'binary', 'text', 'standalone', 'certification (generic)', 'certification (persona)',
     'certification (casual)', 'certification (positive)', 'subkey binding', 'primary key binding', 'direct', 'key revocation',
     'subkey revocation', 'certification revocation', 'timestamp', 'uknown: 0..255'. |