(Ruby) Generate an RSA Key and Save to Encrypted PEM

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Demonstrates how to generate an RSA key and save to an encrypted PEM file.

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

require 'chilkat'

rsa = Chilkat::CkRsa.new()

# Generate a 2048-bit key.
success = rsa.GenerateKey(2048)
if (success == false)
    print rsa.lastErrorText() + "\n";
    exit
end

# privKey is a CkPrivateKey
privKey = rsa.ExportPrivateKeyObj()
password = "secret"
# Saving to a relative path (from the current working directory of the process).
path = "rsaKeys/myTestRsaPrivate.pem"
# Encrypt the PEM using 256-bit AES encryption.
privKey.put_Pkcs8EncryptAlg("aes256")
success = privKey.SavePkcs8EncryptedPemFile(password,path)
if (success == false)
    print privKey.lastErrorText() + "\n";
    exit
end

# 

# We can also save the public key.
# There is no need to encrypt public keys.
# pubKey is a CkPublicKey
pubKey = rsa.ExportPublicKeyObj()
path = "rsaKeys/myTestRsaPublic.pem"
# Choose PKCS1 or PKCS8
# We'll choose PKCS8.
preferPkcs1 = false
success = pubKey.SavePemFile(preferPkcs1,path)
if (success == false)
    print pubKey.lastErrorText() + "\n";
    exit
end

# 

print "Success." + "\n";