In computer programming, we often need to encrypt files to protect the security and privacy of file contents. Encryption is the conversion of files into a form that is not directly understandable and only authorized users can decrypt and view the file contents. This article will introduce how to use programming language to implement file encryption function.
Programming languages provide a variety of encryption algorithms and libraries that can help us implement file encryption. Here is a sample code written in Python that demonstrates how to encrypt a file and protect its contents from being opened by others:
from cryptography.fernet import Fernet
def generate_key():
key = Fernet.generate_key()
with open("encryption_key.key&