Overview#

Key is a granted Privilege used by a lock (Policy Enforcement Point PEP) to provide Access to a Protected Resource

Key is used for locking or unlocking a Protected Resource

Key may be a physical Entity or a Digital Key or some combination of both.

NIST.SP.800-107#

Key is a parameter used with a cryptographic algorithm that determines its operation in such a way that an entity with knowledge of the key can reproduce or reverse the operation, while an entity without knowledge of the key cannot.

Examples applicable to this Recommendation include:

• The computation of a keyed-hash message authentication code.
• The verification of a keyed-hash message authentication code.
• The generation of a Digital Signature on a message.
• The verification of a Digital Signature.

More Information#

There might be more information for this subject on one of the following:

• Asymmetric cipher
• Authentication
• Block Cipher Mode
• CCM
• CTAP2
• Cipher
• Cipher-based Message Authentication Code
• Cryptanalysis
• Cryptographic Primitive
• Data Encapsulation Method
• Digital Key
• Encryption
• Hybrid cryptosystem
• Kerberos Cryptosystem Negotiation Extension
• Kerberos Pre-Authentication
• Kerckhoffs principle
• Key
• Key Encapsulation Method
• Key Management Service
• Key Rotation
• Key agreement
• Key pair
• Key size
• Key-Exchange
• Key-value
• KeyAgreement
• KeyEncipherment
• Lock
• Meet-in-the-Middle Attack
• Memorized secrets
• NICI
• NICISDI Keys
• NICISDITreeKeyProviderFaultTolerance
• NICITreeKeyProvider
• OAuth 2.0 Proof-of-Possession (PoP) Security Architecture
• Password Validator
• SDI Key
• Secret-key
• Security Domain Infrastructure
• Server Storage Key
• Session Key
• Signatures with efficient protocols
• Symmetric cipher
• The Onion Router
• TreeKey
• Trust No One
• Trusted Platform Module
• Tweakable Block Cipher
• USER_USE_AES_KEYS
• User-Account-Control Attribute Values
• Web Blog_blogentry_161018_1
• WebAuthn Attestation
• Wi-Fi Protected Access 2