(Ruby) 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.

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

# 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()
success = privKey.LoadXml(privateKeyXml)
success = privKey.SavePemFile("privateKey.pem")

# Save the public key in PEM format:
pubKey = Chilkat::CkPublicKey.new()
success = pubKey.LoadFromString(publicKeyXml)
success = pubKey.SavePemFile(false,"publicKey.pem")