From: Roland Schmitt <Roland.Schmitt@...>
Date: 2006-04-18T18:12:19+09:00
Subject: Re: RSA Encryption Decryption

Hi,


name pipe wrote:
> Hi,
> 
> I would like to know how can we do encryption and decryption using public
> and private keys in ruby. Does ruby any RSA libraries for the same. A small
> example would be quite helpful.
> 
> Thanks
> 

take a look at the openssl bindings for ruby:

require "openssl"
include OpenSSL
include X509
include PKey

cert = Certificate.new(File.read("server.cer"))
private_key = RSA.new(File.read("server.cer.key"))
message = "This is a test!"

puts("--- Start private key encryption / public key decryption")
crypt = private_key.private_encrypt(message)
puts("Plain text ---------")
puts(message)
puts("Encrypted text------")
puts(crypt)
puts("Decryted text-------")
puts(cert.public_key.public_decrypt(crypt))

puts("--- Start public key encryption / private key decryption")
crypt = cert.public_key.public_encrypt(message)
puts("Encrypted text------")
puts(crypt)
puts("Decryted text-------")
puts(private_key.private_decrypt(crypt))



Regards,
Roland