(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.

Note: This example requires Chilkat v11.0.0 or greater.

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

require 'chilkat'

success = false

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

rsa = Chilkat::CkRsa.new()

# Generate a 2048-bit key.  Chilkat RSA supports
# key sizes ranging from 512 bits to 8192 bits.
privKey = Chilkat::CkPrivateKey.new()
success = rsa.GenKey(2048,privKey)
if (success == false)
    print rsa.lastErrorText() + "\n";
    exit
end

pubKey = Chilkat::CkPublicKey.new()
privKey.ToPublicKey(pubKey)

# Save the private key in PEM format:
success = privKey.SavePemFile("privateKey.pem")
if (success == false)
    print privKey.lastErrorText() + "\n";
    exit
end

# Save the public key in PEM format:
success = pubKey.SavePemFile(false,"publicKey.pem")
if (success == false)
    print pubKey.lastErrorText() + "\n";
    exit
end

print "Success." + "\n";