*"The Data Owner"* :term:`Character` - retains full control over the data encrypted for her and determines whom to share the data with.
*"The Data Recipient"* :term:`Character` - the data recipient that :term:`Alice` intends to share data with.
Encrypted symmetric key (:term:`KEM`) that is eventually re-encrypted.
A fragment of ciphertext that is a partial re-encryption produced by a :term:`kFrag` operation on a :term:`Capsule`.
A common term for any entity fulfilling a particular role in our cryptographic narrative.
Data encapsulation mechanism - data encrypted with a symmetric key.
*"The Encryptor"* :term:`Character` - a data source that encrypts data on behalf of :term:`Alice` and produces a :term:`MessageKit`.
*"The Faucet"* :term:`Character` - provides *testnet* NU tokens for nodes on the test NuCypher Network.
Key encapsulation mechanism - a symmetric key encrypted with an asymmetric key
A fragment of a :term:`Re-encryption Key`.
A title for a classification/categorization of data according to how it is intended to be shared.
The ciphertext (data encrypted with a symmetric key) and the :term:`Capsule` (encrypted symmetric key) that are stored together.
*"The Monitor"* :term:`Character` - provides a high-level view of the NuCypher Network.
The NuCypher token used by nodes for staking.
1 NU = 10\ :sup:`18` NuNits.
A timeframe of approximately a day in the NuCypher Network.
A key that facilitates the transformation of ciphertext from one encryption key to another.
A quantity of tokens and escrow duration in periods.
An account that holds NU tokens and performs staking-related operations on the blockchain.
The public key for a :term:`Character`'s signing key pair.
The locations of :term:`Ursulas<Ursula>` that have the relevant :term:`kFrags<kFrag>` for a policy. :term:`Bob` will use the treasure map to determine which :term:`Ursulas<Ursula>` to contact to re-encrypt the data :term:`Alice` has shared with him.
NuCypher's threshold proxy re-encryption scheme - it takes standard :term:`PRE` and increases security and performance. See Umbral_.
*"The Proxy in PRE"* :term:`Character` - the nodes on the NuCypher Network that stand ready to re-encrypt data in exchange for payment in fees and token rewards; they enforce the access policy created by :term:`Alice`.
An account that is actively doing work in the network as an :term:`Ursula` node. A worker is bonded to, and performs work on behalf of, a :term:`Staker`.