#2.1 What is cryptography? #2.2 Keys #2.3 Attacker threat Models #2.4 Measures of Security #2.5 Caesar Cipher-part1 #2.6 Caesar Cipher-part2 #2.7 Monoalphabetic Substitution Cipher #2.8 Playfair Cipher #2.9 part1-Vigenère Cipher #2.10 Vigenère Cipher-part2 #2.11 One-Time Pads-part1 #2.12 One-Time Pads-part2 #2.13 One-Time Pads-part3 #2.14 Rail fence #2.15 Transposition Ciphers #2.16 Rows-Columns transposition

#3.1 Categories of Modern cryptography #3.2 Stream ciphers #3.3 Block Ciphers #3.4 Feistel Cipher #3.5 DES structure #3.6 Simplified DES #3.7 Key -DES #3.8 DES Encrypt #3.9 Double DES (2DES) #3.10 Block Cipher Modes of Operation #3.11 Cipher Block Chaining mode (CBC) #3.12 Output Feedback mode (OFB) #3.13 Counter (CTR) Mode #3.14 Error propagation #3.15 Integrity and Authenticity #3.16 Cryptographic Hashes #3.17 Authentication #3.18 Message Authentication Codes (MACs) #3.19 HMAC

#4.1 Public Key Cryptography #4.2 RSA #4.3 ElGamal Encryption #4.4 Digital Signatures

#5.1 Access Control #5.2 Slow Hashes #5.3 Brute-forcingapassword #5.4 Web Authentication #5.5 Classifications and Clearances #5.6 Bell-LaPadula #5.7 Biba #5.8 Firewalls #5.9 Stateless Packet Filters

#6.1 true and false #6.2 mid1-Caeser #6.3 mid1-Caesar’s Cipher #6.4 mid2-RSA #6.5 mid1-Vignere Cipher #6.6 mid1-monoalphabetic cipher and polyalphabetic cipher #6.7 mid1-Playfair #6.8 One-time pad-mid1 #6.9 Vigenere cipher-mid1 #6.10 S-DES-mid1 #6.11 Playfair-mid1 #6.12 Vigenere cipher-mid1 #6.13 dencrypted -mid1 #6.14 s-des-mid1 #6.15 mid1-DES #6.16 mid1-Mode(ecb+cbc+ctr) #6.17 CBC and CTR -mid1 #6.18 encryption mode encrypts-mid1 #6.19 RSA signature -mid2 #6.20 RSA +ايجاد mod #6.21 Diffie-Hellmanex #6.22 ElGamalCryptographyex #6.23 RSA - تمرين #6.24 decide whether the system maintains #6.25 secrecyorauthentication #6.26 ElGamal Cryptography #6.27 RSA #6.28 RSA-mid2 #6.29 gcd+RSA #6.30 RSA-mid2 #6.31 Diffie-hellman-mid2 #6.32 RSA-mid2 #6.33 RSA cipher-mid 2 #6.34 access control #6.35 Access Control #6.36 Number of keys #6.37 firewall #6.38 RSA #6.39 Mode #6.40 سؤال مهم #6.41 Password #6.42 ElGamal - ex #6.43 Diffie-Hellman-ex #6.44 firewall #6.45 1-Certificate -ex #6.46 Certificate -ex-2 #6.47 Password-2