Encryption in which the same secret key both encrypts and decrypts data, fast enough for bulk data but requiring the two communicating parties to already share that key through some secure channel.
Facts
Core PrincipleThe same cryptographic keys are used for both encryption of plaintext and decryption of ciphertext. 1 Connections
Sources
1. Symmetric-key algorithm, Wikipedia
IntroductionQuote, Introduction
Symmetric-key algorithms are algorithms for cryptography that use the same cryptographic keys for both the encryption of plaintext and the decryption of ciphertext.
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