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Loading page content...Korean national block cipher (RFC 4269, 2005; ISO/IEC 18033-3). Mandatory in Korean financial and government systems for over a decade. 128-bit block, 128-bit key, 16-round Feistel with G-function using two GF(2^8)-derived S-boxes. Superseded by LEA for new Korean deployments.
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A simple stream cipher performing byte-wise XOR operations between plaintext and key.
An unbreakable cipher when used with a truly random, single-use key of equal length to the plaintext.
Data Encryption Standard. A legacy 64-bit block cipher utilizing a 56-bit key size.
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