Security threats and requirements, services and mechanisms, historical ciphers, cipher machines, stream ciphers, RC4, block ciphers, DES, breaking DES, brute-force attacks, other block ciphers (triple DES, RC2, IDEA, Blowfish, CAST-128, Skipjack, GOST, AES), block cipher encryption modes, public-key encryption (RSA, DH, Elgamal, DSA), elliptic curve algorithms, hash and MAC algorithms (MD2, MD4, MD5, SHA-1, RIPEMD-160, the HMAC's).
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