Digest hashes a reader and returns a SHA256 digest.

DigestFile calculates a SHA256 hash (like Docker) for a given file.

NewFromFiles constructs a new Signatory from the PGP key in the given filename.

NewFromKeyring reads a keyring file and creates a Signatory.

Signatory signs things.

SumCollection represents a collection of file and image checksums.

Verification contains information about a verification operation.

PassphraseFetcher returns a passphrase for decrypting keys.