Stream cipher: A method of encryption where each bit or byte of plaintext is combined with a pseudorandom cipher digit stream, typically using a bitwise exclusive-or (XOR) operation. This encryption method provides high speed and hardware efficiency. However, because of the linearity of the XOR operation, it is critical that the same sequence is not used twice, making key management a crucial aspect of secure stream cipher operation.
Categories: CC D5: Security Operations | CCSP D2: Cloud Data Security | CISM D3: Information Security Program | CISSP D3: Security Architecture and Engineering | Security+ D1: General Security Concepts | SSCP D5: Cryptography
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