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What is Block Cipher vs Stream Cipher Explained about?

The document compares stream ciphers and block ciphers, highlighting that stream ciphers encrypt data one bit or byte at a time while block ciphers encrypt blocks of data. It discusses the ideal block cipher, its impracticalities, and introduces the Feistel cipher structure, which combines substitutions and permutations for encryption and decryption. Key design features of block ciphers, such as block size, key size, and the number of rounds, are also outlined.

Author

Dr Sharmili N

Language

EN