4_cryptography: classical encryption,substitution cipher,ceaser cipher

3.3_ CFB,OFB- modes of operation

3.2_modes of operation_ECB,CBC

3.1_block cipher and stream cipher

9_cryptography:Hill cipher(substitution method)

2.10_cryptography: irreducible polynomial,GCD and multiplicative inverse of 2 polynomials

2.9_cryptography:polynomial arithmetic

2.8_cryptography: field,galois field,GF(2),GF(7)

2.7_cryptography:euclidean algorithm,extended euclidean algorithm

2.6_cryptography:Chinese remainder theorem

2.5_cryptography: primality test/ Miller rabin algorithm

2.3_cryptography: fermats theorem

2.4_cryptography:eulers theorem

2.2 cryprography: eulers Totient function,multiplicative inverse

2.1 cryprtography:prime numbers,modular arithmetic

6_cryptography: playfair cipher,polyalphabetic(vignere) cipher

7_cryptography: vernam/one time pad,transposition technique, rail fence

8_cryptography:row transposition cipher,steganography

4_cryptography: classical encryption,substitution cipher,ceaser cipher

5_cryptography: Monoalphabetic cipher

3_cryptography: Security mechanisms

2_cryptography: security services

cryptography: security attacks

DBSCAN

lecture 59/hierarchical clustering problem