Cryptographic Library

Overview

A comprehensive C++ cryptographic library implementing both modern and classical encryption methods. This project combines theoretical cryptographic principles with practical implementation challenges, focusing on security, performance, and educational value.

Current Features

• Modern Symmetric Encryption (AES implementation with hardware acceleration)
• Multiple block cipher modes (ECB, CBC, CFB, OFB)
• Hash Functions (SHA-256)
• Classical Ciphers for educational purposes
• PKCS7 padding scheme

Development Status

Currently working on resolving several key challenges:

• Fixing decryption round key transformation in AES-NI implementation
• Correcting round key copy mismatches in key schedule
• Debugging the AES-128 key schedule, particularly for decryption keys
• Optimizing overall performance and memory usage
• Enhancing test coverage

Planned Features

• RSA implementation for asymmetric encryption
• Digital signature functionality
• Secure key management system
• Additional hash functions (SHA-3)
• Elliptic curve cryptography support

Technical Implementation

Written in C++17, the library leverages hardware acceleration using AES-NI where available. The project emphasizes memory-safe implementations and thread-safe operations, with extensive unit testing and benchmarking.

Technical Capabilities