The term describes an encryption method in which the same key is used for encryption and decryption or in which these two keys can be easily derived from each other. A distinction is made between block ciphers, which process the plaintext in blocks of fixed length (usually 64 or 128 bits), and stream ciphers, which operate at the level of individual characters.
Recent Posts
- Newly published: Atos whitepaper on post-quantum cryptography
- Newly published: cryptovision special issue of “The Vault” magazine
- US standards body NIST announces four winners in post-quantum competition
- Mindshare 2022 video: Two great days in 70 seconds
- New GreenShield version receives BSI approval