理解symmetric key||asymmetric key ||shared key||public-private key on Cryptography

• Overview

  cryptography

• cryptographic keys

  In cryptography, a key is a piece of information (a parameter) that determines the functional output of a cryptographic algorithm.

  For encryption algorithms, a key specifies the transformation of plaintext into ciphertext, and vice versa depending on the decryption algorithm.

• Symmetric-key algorithms

  Symmetric-key algorithms are algorithms for cryptography that use the same cryptographic keys for both encryption of plaintext and decryption of ciphertex