Encryption in Python

Description:

This Python code demonstrates various cryptographic techniques, including hashing, symmetric encryption (AES), and asymmetric encryption (RSA). It utilizes the hashlib library for hashing and the cryptography library for encryption and decryption processes.

Key Components

1. SHA-512 Hashing:
   • The create_sha512_hash function takes a string input and generates a SHA-512 hash using the hashlib library.
   • The hash is returned as a hexadecimal string, providing a secure representation of the input data.
2. AES Encryption and Decryption:
   • The aes_encryption_decryption function generates a symmetric key using the Fernet class from the cryptography library.
   • It encrypts the input data and prints the encrypted result.
   • The function then decrypts the data back to its original form and returns it along with the generated key.
3. RSA Encryption and Decryption:
   • The rsa_encryption_decryption function generates a pair of RSA keys (private and public) using the rsa module from the cryptography library.
   • It encrypts the input data with the public key and prints the encrypted result.
   • The function then decrypts the data using the private key and returns the original data.
4. Main Execution:
   • The main block demonstrates the usage of the above functions.
   • It hashes a sample string using SHA-512, encrypts and decrypts a secret message using AES, and performs RSA encryption and decryption on the same message.
   • The results of each operation are printed to the console.

Example Output

When executed, the program will produce output similar to the following:

javascript

SHA-512 Hash: <hashed_value>
Encrypted data: <encrypted_aes_data>
Decrypted data (AES): Secret Message
Encrypted data (RSA): <encrypted_rsa_data>
Decrypted data (RSA): Secret Message
All operations completed successfully.

This output demonstrates the successful execution of hashing and encryption/decryption processes, showcasing the functionality of the cryptographic techniques implemented.

Conclusion

This Python code effectively illustrates the use of cryptographic methods for securing data through hashing and encryption. It provides a clear example of how to implement SHA-512 hashing, AES symmetric encryption, and RSA asymmetric encryption using the hashlib and cryptography libraries. This code serves as a valuable reference for understanding basic cryptographic operations in Python.

Features:

1. SHA-512 Hashing:
   • The create_sha512_hash function takes a string input and generates a SHA-512 hash using the hashlib library.
   • The hash is returned as a hexadecimal string, providing a secure representation of the input data.
2. AES Encryption and Decryption:
   • The aes_encryption_decryption function generates a symmetric key using the Fernet class from the cryptography library.
   • It encrypts the input data and prints the encrypted result.
   • The function then decrypts the data back to its original form and returns it along with the generated key.
3. RSA Encryption and Decryption:
   • The rsa_encryption_decryption function generates a pair of RSA keys (private and public) using the rsa module from the cryptography library.
   • It encrypts the input data with the public key and prints the encrypted result.
   • The function then decrypts the data using the private key and returns the original data.
4. Main Execution:
   • The main block demonstrates the usage of the above functions.
   • It hashes a sample string using SHA-512, encrypts and decrypts a secret message using AES, and performs RSA encryption and decryption on the same message.
   • The results of each operation are printed to the console.

Requirements:

Python

Instructions:

For Best results, use Pycharm, otherwise use Visual Studio Code with the appropriate extensions.