Generate RSA Public/Private Key Pair and Export to PEM

Ruby example code showing how to generate an RSA public/private key pair and export to PEM files.

Download Chilkat Ruby Library

require 'chilkat'

rsa = Chilkat::CkRsa.new()

success = rsa.UnlockComponent("Anything for 30-day trial")
if (success != true)
    print "RSA component unlock failed" + "\n"
    exit
end

#  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

#  Keys are exported in XML format:
publicKeyXml = rsa.exportPublicKey()
print publicKeyXml + "\n";

privateKeyXml = rsa.exportPrivateKey()
print privateKeyXml + "\n";

#  Save the private key in PEM format:
privKey = Chilkat::CkPrivateKey.new()
privKey.LoadXml(privateKeyXml)
privKey.SaveRsaPemFile("privateKey.pem")

#  Save the public key in PEM format:
pubKey = Chilkat::CkPublicKey.new()
pubKey.LoadXml(publicKeyXml)
pubKey.SaveOpenSslPemFile("publicKey.pem")