(Ruby) RSA Sign using Base64 Private Key

Signs a string using a non-encrypted RSA private key in base64 encoding. Returns the RSA signature as a base64 string.

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.

privKey = Chilkat::CkPrivateKey.new()

sbPem = Chilkat::CkStringBuilder.new()
sbPem.AppendLine("-----BEGIN RSA PRIVATE KEY-----",true)
sbPem.AppendLine("MIIC .... j5A==",true)
sbPem.AppendLine("-----END RSA PRIVATE KEY-----",true)

success = privKey.LoadPem(sbPem.getAsString())
if (success != true)
    print privKey.lastErrorText() + "\n";
    exit
end

rsa = Chilkat::CkRsa.new()

success = rsa.ImportPrivateKeyObj(privKey)
if (success != true)
    print rsa.lastErrorText() + "\n";
    exit
end

rsa.put_EncodingMode("base64")
strSigned = rsa.openSslSignStringENC("12345678")
print strSigned + "\n";

strOriginal = rsa.openSslVerifyStringENC(strSigned)
print strOriginal + "\n";