Information-Security-Basics

My solutions to the assignments for my Information Security Basics course.

Public-Key Cryptography:

• OAEP Encryption and Decryption;
• PSS Signature and Verification;
• Is RSA Encryption Anonymous?

Lattice-Based Encryption:

• LWE Encryption and Decryption;
• RLWE Encryption and Decryption.

Symmetric Cryptography:

• Block and Stream Ciphers;
• Hash Functions;
• Assessing the Security of a Cipher;
• AES Round Trnasformations.

RSA:

• Key Generation;
• Encryption and Decryption;
• RSA Signature Scheme.

Advanced Protocols:

• El Gamal: Ciphertext, Encryption Algorithm, Multiplicative Homomorphic Property;
• Re-randomisation and shuffling of ciphertexts;
• Needham-Schroeder’s shared key protocol.