Ruby: file encryption/decryption with private/public keys

Question

I am searching for an algorithm for file encryption/decryption which satisfies the following requirements:

• Algorithm must be reliable
• Algorithm should

Answer 1

I made a gem to help with this. It's called cryptosystem. Simply configure the path and password to your private key as well as the path to your public key, and it does the rest.

Encrypting is as simple as:

rsa = Cryptosystem::RSA.new
rsa.encrypt('secret') # => "JxpuhTpEqRtMLmaSfaq/X6XONkBnMe..."

And decrypting:

encrypted_value = rsa.encrypt('secret') # => "Y8DWJc2/+7TIxdLEolV99XI2sclHuK..."
rsa.decrypt(encrypted_value) # => "secret"

You can check it out on GitHub or RubyGems.