Keychain returns a new keychain from the [user].

Create and store a new key that will be controlled by this user.

Create and store [numKeys] new keys that will be controlled by this user.

NewUserFromDB tracks a keystore user from a database.

NewUserFromKeystore tracks a keystore user from the provided keystore.

CodecVersion is the current default codec version.

Codecs do serialization and deserialization.

Codecs do serialization and deserialization.