(Swift 3,4,5...) 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 Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let privKey = CkoPrivateKey()!
    var success: Bool

    let sbPem = CkoStringBuilder()!
    sbPem.appendLine("-----BEGIN RSA PRIVATE KEY-----", crlf: true)
    sbPem.appendLine("MIIC .... j5A==", crlf: true)
    sbPem.appendLine("-----END RSA PRIVATE KEY-----", crlf: true)

    success = privKey.loadPem(sbPem.getAsString())
    if success != true {
        print("\(privKey.lastErrorText!)")
        return
    }

    let rsa = CkoRsa()!

    success = rsa.importPrivateKeyObj(privKey)
    if success != true {
        print("\(rsa.lastErrorText!)")
        return
    }

    rsa.encodingMode = "base64"
    var strSigned: String? = rsa.openSslSignStringENC("12345678")
    print("\(strSigned!)")

    var strOriginal: String? = rsa.openSslVerifyStringENC(strSigned)
    print("\(strOriginal!)")

}