This repository provides a comprehensive guide to cryptography fundamentals and practical applications. It includes examples of symmetric encryption (AES), asymmetric encryption (RSA), digital signatures, and common cryptographic combinations. All code examples are available in Python.

🔐 Enterprise-grade text encryption toolkit implementing AES-256-GCM, RSA-OAEP, and Hybrid cryptosystems | Educational cryptography suite with authenticated encryption, key management, and security-first design | NIST-compliant algorithmsv

File encryption with GOST2-128 in CBC and GCM mode (C# language)

File encryption with GOST2-128 in CBC and GCM mode (Java language)

File encryption with GOST2-128 in CBC and GCM mode (Python language)

File encryption with GOST2-128 in CBC and GCM mode (Rust language)

File encryption with GOST2-128 in CBC and GCM mode (Go language)

🛡️ Encrypt files securely using GOST 2-128 in CBC and GCM modes with this Python implementation, ensuring strong protection against potential attacks.

Interactive AES encryption demo: encrypt Linux Tux with ECB vs GCM, decrypt with wrong keys, flip ciphertext bits, visualize duplicate blocks. Learn why ECB is broken, how padding oracle attacks killed CBC, and why TLS 1.3 mandates GCM. Free educational tool — zero dependencies, pure WebCrypto.

🔒 Encrypt and decrypt files using GOST2-128 in CBC mode with SHA-256 authentication for secure data handling in C.

🔒 Encrypt files securely using GOST2-128 with CBC and GCM modes in Rust, offering robust protection with advanced key generation and no weak keys.