Swift

RSA Encrypt with Modulus and Exponent

See more RSA Examples

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

func chilkatTest() {
    var success: Bool = false

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

    let rsa = CkoRsa()!

    // Assuming you already have a base64 modulus and exponent,
    // wrap it in XML like this:
    var modulus: String? = "qMBRpdYrAy5aMmo31NErUizh5sbweguSmh4wlK6uJEIDl+kwTlROnE34KOFExeTbJSX0WygPi+vWl0yNq7buIMUKpytossAAWut5khO3CQJxTk7G2gnEPNUUXHiExGgNrLzcSLv8YIlfVALhoRWyC67KOL+a+3taNq3h+BHeWhM="
    var exponent: String? = "AQAB"

    let xml = CkoXml()!
    xml.tag = "RSAPublicKey"
    xml.newChild2(tagPath: "Modulus", content: modulus)
    xml.newChild2(tagPath: "Exponent", content: exponent)

    let pubKey = CkoPublicKey()!
    success = pubKey.load(fromString: xml)
    if success == false {
        print("\(pubKey.lastErrorText!)")
        return
    }

    success = rsa.usePublicKey(pubKey: pubKey)
    if success == false {
        print("\(rsa.lastErrorText!)")
        return
    }

    var usePrivateKey: Bool = false
    var plainText: String? = "message in a bottle"

    rsa.encodingMode = "base64"
    var encryptedStrBase64: String? = rsa.encryptStringENC(str: plainText, bUsePrivateKey: usePrivateKey)
    print("\(encryptedStrBase64!)")

}