Metadata for a single public or secret subkey in a key ring.
OpenPGP public-key algorithm tag.
Key creation instant.
Expiration instant, or null if the key does not expire.
null
Space-separated uppercase hex fingerprint.
Aggregated OpenPGP key-flags bitmask (certify, sign, encrypt, auth).
Whether the key carries a revocation signature.
64-bit OpenPGP key ID.