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The document discusses the principles of block and stream ciphers, highlighting their differences in data processing methods, with stream ciphers encrypting data bit-by-bit and block ciphers processing fixed-size blocks. It outlines the advantages and disadvantages of stream ciphers, such as speed and vulnerability to known plaintext attacks, and details various block cipher modes of operation like ECB and CBC. Additionally, it covers the Feistel structure used in block ciphers, emphasizing the importance o

Author

vyshnavireddy598

Language

EN