![]() ![]() We'll invoke the cipher as previously with the doFinal method: byte decryptedMessageBytes = decryptCipher.doFinal(encryptedMessageBytes) This time we'll initialize it with a decryption mode and a private key: Cipher decryptCipher = Cipher.getInstance("RSA") ĭecryptCipher.init(Cipher.DECRYPT_MODE, privateKey) For this, we'll need another Cipher instance. Now, let's see how we can decrypt the message to its original form. ![]() This way, the message will be more readable and easier to work with. If we'd like to store it in a database or send it via REST API, it would be more convenient to encode it with the Base64 Alphabet: String encodedMessage = Base64.getEncoder().encodeToString(encryptedMessageBytes) Now, our message is successfully encoded. ![]() Note that it accepts only byte array arguments, so we need to transform our string before: byte secretMessageBytes = secretMessage.getBytes(StandardCharsets.UTF_8) )īyte encryptedMessageBytes = encryptCipher.doFinal(secretMessageBytes) Having that ready, we can invoke the doFinal method to encrypt our message. Cipher encryptCipher = Cipher.getInstance("RSA") ĮncryptCipher.init(Cipher.ENCRYPT_MODE, publicKey) ![]()
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