(Ruby) RSA Encrypt and OpenSSL Decrypt

Demonstrates how to use Chilkat to RSA encrypt, and then use OpenSSL to decrypt.

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

require 'chilkat'

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

rsa = Chilkat::CkRsa.new()

success = rsa.GenerateKey(2048)

# privKey is a CkPrivateKey
privKey = rsa.ExportPrivateKeyObj()
success = privKey.SavePkcs8PemFile("qa_output/privKey.pem")

rsa.put_EncodingMode("base64")
plainText = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890"
bUsePrivateKey = false
encryptedStr = rsa.encryptStringENC(plainText,bUsePrivateKey)

bd = Chilkat::CkBinData.new()
bd.AppendEncoded(encryptedStr,"base64")
success = bd.WriteFile("qa_output/enc.dat")

#  The OpenSSL command to decrypt is:
#  openssl pkeyutl -in enc.dat -inkey privKey.pem -keyform PEM -pkeyopt rsa_padding_mode:pkcs1 -decrypt

print "OK" + "\n";