(Ruby) Generate RSA Key and Export to Encrypted PEM

Ruby sample showing how to generate an RSA key and export to encrypted PEM.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

rsa = Chilkat::CkRsa.new()

# Generate a 1024-bit key.  Chilkat RSA supports
# key sizes ranging from 512 bits to 4096 bits.
success = rsa.GenerateKey(1024)
if (success != true)
    print rsa.lastErrorText() + "\n";
    exit
end

# Get the private key as unencrypted XML:
keyXml = rsa.exportPrivateKey()
print keyXml + "\n";

# To encrypt the key -- meaning to get the key in
# an encrypted PEM format -- load it into a PrivateKey object,
# and then export to encrypted PEM:
privKey = Chilkat::CkPrivateKey.new()

success = privKey.LoadXml(keyXml)
if (success != true)
    print privKey.lastErrorText() + "\n";
    exit
end

strEncPem = privKey.getPkcs8EncryptedPem("myPassword")

# You now have the private key in an encrypted format,
# which may be (for example) saved to a database