CRYPTOGRAPHY
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1. Applied Cryptography 2nd ed. - B. Schneier.
2. Cryptography Theory And Practice - Douglas Stinson
3. Guide to Elliptic Curve Cryptography - D. Hankerson, A. Menezes, S. Vanstone
4. Handbook of Applied Cryptography - A. Menezes, P. VanOorschot, S. Vanstone
5. Modern Cryptography Theory And Practice - Wenbo Mao.
6. The Mathematics of Ciphers - Number Theory and RSA Cryptography.