gistfile1.rb

require "openssl"
require "base64"

include Base64

plain_text = "The beatings will continue until morale improves"

seckey = OpenSSL::PKey::RSA.new(1024)
pubkey = seckey.public_key

# private encryption - public decryption
seckey_cipher_text = seckey.private_encrypt(plain_text)
pubkey_plain_text = pubkey.public_decrypt(seckey_cipher_text)

# public encryption - private decryption
pubkey_cipher_text = pubkey.public_encrypt(plain_text)
seckey_plain_text = seckey.private_decrypt(pubkey_cipher_text)

puts "Seckey: \n" + seckey.to_pem
puts "Pubkey: \n" + pubkey.to_pem

puts "Plain text: " + plain_text
puts "Seckey encrypted cipher text: " + urlsafe_encode64(seckey_cipher_text)
puts "Pubkey decrypted plain text: " + pubkey_plain_text
puts "Pubkey encrypted cipher text: " + urlsafe_encode64(pubkey_cipher_text)
puts "Seckey decrypted plain text: " + seckey_plain_text