🔐 Cryptography Algorithm Toolkit

A beginner-friendly, real-time Python project that demonstrates core concepts of modern cryptography using AES (symmetric encryption), RSA (asymmetric encryption),SHA256 (hashing) and Enky (custom XOR-based encryption). Designed to simulate real-world use cases like secure messaging, file encryption, and password hashing.

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📌 Project Objectives

• Implement and understand core cryptographic techniques:
  • AES for secure data encryption/decryption
  • RSA for public/private key cryptography
  • SHA256 for one-way data hashing
  • Enky for experimental key-based XOR encryption
• Provide real-time user interaction
• Create a modular, scalable architecture
• Learn encryption workflow with file input/output and key handling

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🧰 Technologies & Tools

• Language: Python 3.8+
• Libraries Used:
  • cryptography for AES & RSA
  • hashlib for SHA256
  • os, base64, json for file/key management
• Structure: Modular folder system (/modules)
• Optional Tools: PyCrypto, OpenSSL, tkinter (for GUI expansion)

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🧪 Features & Demonstrations

🔐 AES (Advanced Encryption Standard)

• Generate and save AES key
• Encrypt user input messages
• Decrypt saved encrypted messages
• Use Fernet for secure symmetric encryption

🔑 RSA (Rivest–Shamir–Adleman)

• Generate RSA key pair (public/private)
• Encrypt a message using the public key
• Decrypt it using the private key
• Save/load RSA keys in .pem format

🔁 SHA256 Hashing

• Hash plain text securely
• Hash any file for integrity checking
• Compare original vs current hash for tamper detection

🌀 Enky (Custom XOR-Based Encryption)

• Interactive menu-based encryption/decryption
• Key-dependent XOR encryption for learning purposes
• Supports text messages in real-time
• Optional multi-round encryption or shuffle can be added
• Fully reversible with the correct key
• Ideal for experimenting with custom symmetric encryption logic

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💡 Real-Time Use Cases Simulated

Use Case	Crypto Technique Used
Secure messaging	AES
Digital signatures	RSA
Password storage/verification	SHA256
File tampering detection	SHA256
Key-based access systems	RSA
Experimental learning cipher	Enky

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🧪 Sample Outputs

🔐 Sample AES Output

Enter message to encrypt: Hello Aakash
Encrypted: gAAAAABo...
Decrypted: Hello Aakash

🔐 RSA Output

Enter message to encrypt: SecretMessage
Encrypted with Public Key: b'...'
Decrypted with Private Key: SecretMessage

🔐SHA256 Output

Input text: AAKASH
Hash: ac98f72f...

🌀 Enky Output

Enter message to encrypt: AAKASH
Enter key: 234
Encrypted (bytes):  b'\xbagX\xc4\x87\xea'
Decrypted message: AAKASH

📌 Future Improvements

✅ Add GUI with Tkinter or PyQt ✅ Support file encryption/decryption ✅ Add digital signature verification ✅ Use Salted Hashing for password security ✅ Store hash-key mapping securely in a DB (e.g., SQLite) ✅ Expand Enky with multiple rounds and key-based shuffling

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Requirements

pip install cryptography pycryptodome

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By Aakash