CryptoTools is a tool for encryption that enables you to send and receive messages. It supports many different encryption methods, including PGP and SHA-256.

If you have a public key, you can use it to encrypt any file you want to send to anyone. The recipient will need to have the CryptoTools app installed in order to decrypt it.

You can also use it to create a secure connection with a server. In order to do that, you need to select the server you want to connect with and then choose the encryption method you want to use.