gianpd / cryptography

Applied Information Security and Cryptography

Applied Information Security and Cryptography's LABs

Lab 1. breaking classic encryption scheme:

1. monoalphabetic cipher;
2. Vigenere cipher.

Lab 2. Private key-encryption:

1. AES and its lazy version;
2. confusion and diffusion property.

Lab 3. Public key-encryption:

1. RSA;
2. Diffie-Hellman;
3. their complexity.

Lab 4. Cryptography Hash Function & Digital Signature

1. Analysis on the sha256 collision probability;
2. Analysis on the universal hash function;
3. Perform a Schnorr Signature scheme;
4. Break a weak Schnorr DS.

Lab 5. Certificates and Transport Layer Security

1. create and use certificates: RSA & ECDSA;
2. TLS v1-v1.3 Handshake.