TY - GEN AU - Tipu, Adnan Mazhar ( MSIS-1) TI - Development of software for encryption/decryption system based on symmetric cryptographic algorithm U1 - 005.8 PY - 2005/// CY - Rawalpindi PB - MCS (NUST) KW - PG Thesis KW - MSIS-1 N1 - Overview (page-1) Introduction to cryptography (page-5) Practical cryptosystems (page-16) The advanced encryption standard (page-42) Implementation of i -crypt crypto-system (page-58) Modified AES system (page-67) summary and conclusions (page-76) ER -