key
1.
[Storage System]
The address of an object in a key-value storage system.
2.
[Data Security]
A sequence of bits used for cryptographic operations and/or for producing other keys.
The same plaintext encrypted with different keys yields different ciphertexts, each of which requires a different key for decryption.
In a symmetric cryptosystem the encryption and decryption keys are the same.
In an asymmetric cryptosystem the encryption and decryption keys are different.