Practical Cryptography in Python

Python is a versatile programming language that includes libraries like PyCrypto, cryptography, and hashlib for implementing cryptographic algorithms.

• Hands-On Practice with Python:
  1. Symmetric Encryption with PyCrypto:
      

     from Crypto.Cipher import AES
key = b'Sixteen byte key'
cipher = AES.new(key, AES.MODE_EAX)
ciphertext, tag = cipher.encrypt_and_digest(b'Hello, World!')
print("Ciphertext:", ciphertext)

  2. Hashing with hashlib:
      

     import hashlib
message = b'Hello, World!'
sha256_hash = hashlib.sha256(message).hexdigest()
print("SHA-256 Hash:", sha256_hash)

  3. Digital Signatures: Use Python’s cryptography library to create and verify digital signatures.