Encryption and Decryption

• https://self-learning-java-tutorial.blogspot.com/2017/09/encrypt-and-decrypt-filestream-in-java.html

• https://www.javacodegeeks.com/2017/11/encryption-trust-tutorial.html

• https://8thlight.com/blog/aaron-lahey/2018/10/23/sharing-secrets-with-gpg.html

hashing

• https://mjremijan.blogspot.com/2017/12/choosing-java-cryptographic-algorithms_20.html

• https://mjremijan.blogspot.com/2017/12/choosing-java-cryptographic-algorithms_22.html

• https://mjremijan.blogspot.com/2017/12/choosing-java-cryptographic-algorithms_5.html