v0.0.4 Minimum input validation

Add minimum input validation

Thanks to @eloylp

v0.0.3

Use Pasword Based Key Derivation Function to get a secure key based on password

Thanks to @psanford for this: https://gophers.slack.com/archives/C02A3DRK6/p1659185759603659

v0.0.2

Ask for password confirmation on encryption

First release

First release!