🔐 Text Crypto Tool

🎯 Enterprise-Grade Text Encryption Suite with Military-Grade Algorithms

A comprehensive cryptographic toolkit implementing industry-standard encryption algorithms with a focus on security, education, and real-world applicability.

Features • Quick Start • Algorithms • Security • Documentation • Contributing

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🌟 Why Text Crypto Tool?

In an era where data breaches cost companies millions and privacy is paramount, understanding and implementing proper encryption is crucial. This project bridges the gap between academic cryptography and practical implementation, providing:

• 🎓 Educational Value: Learn cryptography by doing, with detailed explanations
• 🔒 Production-Ready Code: Following NIST standards and security best practices
• 🚀 Performance Optimized: Benchmarked algorithms with performance metrics
• 🛡️ Security First: Authenticated encryption, tamper detection, and secure key management
• 📊 Comparative Analysis: Understand why AES replaced DES, when to use RSA vs symmetric encryption

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✨ Features

🔐 Cryptographic Capabilities

Algorithm	Mode	Security Level	Use Case	Status
AES-256	GCM	🛡️ Military Grade	Bulk encryption, Files, Messages	✅ Production Ready
RSA-2048/4096	OAEP	🔒 High	Key exchange, Digital signatures	✅ Production Ready
Hybrid	RSA+AES	🚀 Optimal	Large files, Secure communication	✅ Production Ready
DES	CBC	⚠️ Obsolete	Educational only	⚠️ Legacy Demo

🎯 Core Features

• 🔄 Hybrid Encryption System: Combines RSA's security with AES's speed
• ✅ Authenticated Encryption (AEAD): Ensures both confidentiality and integrity
• 🔑 Advanced Key Management: Secure generation, storage, rotation, and destruction
• 🛡️ Tamper Detection: Cryptographic verification of data integrity
• 🎲 Cryptographically Secure RNG: For keys, nonces, and IVs
• 📊 Performance Benchmarking: Compare algorithm speeds and security
• 🧪 Comprehensive Test Suite: Unit, integration, and security tests
• 🎨 Interactive CLI: User-friendly interface with colored output
• 📁 Multiple Export Formats: JSON, Base64, PEM for keys

🔬 Security Features

✅ NIST-Compliant Algorithms      ✅ Constant-Time Operations
✅ Side-Channel Attack Protection ✅ Memory-Safe Key Handling
✅ OAEP Padding (RSA)             ✅ GCM Authentication (AES)
✅ Unique Nonce Generation        ✅ Secure Key Derivation
✅ Anti-Tampering Mechanisms      ✅ Timing Attack Mitigation