Classical ciphers, substitution ciphers, permutation ciphers. Shannon's information theory, entropy, Huffman codes, perfect secrecy and the one-time pad. Symmetric-key ciphers: block and stream ciphers. Public-key cryptosystems. Key distribution. Message authentication and digital signatures.
Classical ciphers, substitution ciphers, permutation ciphers. Shannon's information theory, entropy, Huffman codes, perfect secrecy and the one-time pad. Symmetric-key ciphers: block and stream ciphers. Public-key cryptosystems. Key distribution. Message authentication and digital signatures.
