(Ruby) RSA Sign utf-8 Byte Representation of String

Demontstrates how to sign the utf-8 byte representation of a string.

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

# Load an RSA private key for signing.
privKey = Chilkat::CkPrivateKey.new()
success = privKey.LoadEncryptedPemFile("qa_data/pem/rsa_passwd.pem","passwd")
if (success == false)
    print privKey.lastErrorText() + "\n";
    exit
end

rsa = Chilkat::CkRsa.new()
success = rsa.UsePrivateKey(privKey)
if (success == false)
    print rsa.lastErrorText() + "\n";
    exit
end

originalData = "This is the string to be hashed an RSA signed."

# Indicate that we want the utf-8 byte representation of the string to be signed
rsa.put_Charset("utf-8")

# We want the RSA signature in base64 format
rsa.put_EncodingMode("base64")

sigBase64 = rsa.signStringENC(originalData,"sha256")
print sigBase64 + "\n";