Crystal Encryption Example

Example of how to do encryption in Crystal using OpenSSL aes-256-cbc.

references

• https://www.reddit.com/r/crystal_programming/comments/ak39oh/how_to_use_opensslcipher_to_encrypt_data_with_aes/
• https://github.com/jwoertink/psst/blob/master/crystal/src/psst.cr
• https://www.quora.com/How-do-password-managers-encrypt-passwords
• https://forum.crystal-lang.org/t/how-to-encrypt-decrypt-data/2474