Tech

How to encrypt a string in Java using RSA and decrypt it in Python

Recently at work, I was tasked to write a Java program which would encrypt a sensitive string using the RSA encryption algorithm. The encrypted string would then be passed on to a client over public internet. The client would then use the private key to decrypt the message. But the client is written in Python. So I have to make sure the encryption and decryption wok as expected. And as always, I wrote POCs for both. And here, I'm going to document that. Creating the key pair Before we can start the encryption, we need to have a key pair. A key pair will have a public key and a private key. The public key, as the name suggests, is public. You can share it with anybody who wishes to send you an encrypted text. They will encrypt the original text using this public key, and send over th...

Read More