(Visual FoxPro) RSA Encrypt with Modulus and Exponent

Demonstrates how to RSA encrypt with a given modulus and exponent.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loRsa
LOCAL lcModulus
LOCAL lcExponent
LOCAL loXml
LOCAL lcPublicKey
LOCAL lnSuccess
LOCAL lnUsePrivateKey
LOCAL lcPlainText
LOCAL lcEncryptedStrBase64

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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Rsa')
loRsa = CreateObject('Chilkat.Rsa')

* Assuming you already have a base64 modulus and exponent,
* wrap it in XML like this:
lcModulus = "qMBRpdYrAy5aMmo31NErUizh5sbweguSmh4wlK6uJEIDl+kwTlROnE34KOFExeTbJSX0WygPi+vWl0yNq7buIMUKpytossAAWut5khO3CQJxTk7G2gnEPNUUXHiExGgNrLzcSLv8YIlfVALhoRWyC67KOL+a+3taNq3h+BHeWhM="
lcExponent = "AQAB"

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Xml')
loXml = CreateObject('Chilkat.Xml')
loXml.Tag = "RSAPublicKey"
loXml.NewChild2("Modulus",lcModulus)
loXml.NewChild2("Exponent",lcExponent)

* Encrypt with the public key.
lcPublicKey = loXml.GetXml()
lnSuccess = loRsa.ImportPublicKey(lcPublicKey)

lnUsePrivateKey = 0
lcPlainText = "message in a bottle"

loRsa.EncodingMode = "base64"
lcEncryptedStrBase64 = loRsa.EncryptStringENC(lcPlainText,lnUsePrivateKey)
? lcEncryptedStrBase64

RELEASE loRsa
RELEASE loXml