(Swift) Everyware API RSA Encrypt JSON

See more RSA Examples

Note: This example requires Chilkat v11.0.0 or greater.

For more information, see https://docs.everyware.com/docs/access-iframe#sample-json--encrypted-payload

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func chilkatTest() {
    var success: Bool = false

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

    // First build the JSON to be encrypted.
    let json = CkoJsonObject()!
    json.update("provider_key", value: "USER GUID HERE")
    json.update("menu_item", value: "payment")
    let dt = CkoDateTime()!
    dt.setFromCurrentSystemTime()
    json.update("date_time", value: dt.getAsUnixTimeStr(false))

    // This build JSON like the following:

    // {
    //     "provider_key": "USER GUID HERE",
    //     "menu_item": "payment",
    //     "date_time": "1588163411"
    // }

    // When we sign, we'll want to sign the most compact JSON possible
    json.emitCompact = true

    // Everyware's RSA public key is at:  https://docs.everyware.com/docs/everyware-public-rsa-key
    let sb = CkoStringBuilder()!
    var bCrlf: Bool = true
    sb.appendLine("-----BEGIN PUBLIC KEY-----", crlf: bCrlf)
    sb.appendLine("MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxNbflxUSWQ3XJ1N9dAoh", crlf: bCrlf)
    sb.appendLine("k+uaiFsg3wkPi9LGS/mH8DtHBgZxKyz+oQBDtnDd9FDEo0ql7MMgCMsTAv27W5vk", crlf: bCrlf)
    sb.appendLine("Pu0rm6zhcTeYquWEuVCS7VtVsyTATr0Z9WhqNeZlIRurovJAXl2jRDX6QeY5dayC", crlf: bCrlf)
    sb.appendLine("ubwyG4lBWE4fCakGY6zlh+oaElK0rvblqjYoEg3dn4KPRCYGof8OFxLptHThD4cE", crlf: bCrlf)
    sb.appendLine("T30j+utVafhO0HRyJ4iR3Pigb4GXdWBtJEEEWddZJizMkjFQkyUAoYLOT8EJ2TW3", crlf: bCrlf)
    sb.appendLine("Tz8SvAuHBUEFcPWTSTMAG/bSp5wrYBTXaeEhx+wrYa60OruHuzgmhzKyQVuYlCNJ", crlf: bCrlf)
    sb.appendLine("HdbnassuIRjjSNo25o4AdSlWwpGfBZjAiyEInR+KGpHdhKTxSekJxiwiXUS0UfSG", crlf: bCrlf)
    sb.appendLine("prOpd5PzWaAR7DvjLsdmR9XffxvJCVxC735gLK7hDJKjCajDPHVDr8FSL8xMlrq0", crlf: bCrlf)
    sb.appendLine("nKxtsHeRl1yzoGrRr12+9MiQnHtpqROTNXcXdwe3v+Vh8V5k8v8oIrcgh1+/N7Bd", crlf: bCrlf)
    sb.appendLine("NiRsy1gFHBdu/he/KcDRT/9/acQFMPLQueGfZxUvU5As6pEONjtKX2MUg2fMF6Rc", crlf: bCrlf)
    sb.appendLine("sQVVrLzg0g7EcuHGfuPeKfD/716MvS8NU7rX+2soijCSQv/e18PJPMVDlcMXjnup", crlf: bCrlf)
    sb.appendLine("PPx1tStemesavFlj1okhS6UCAwEAAQ==", crlf: bCrlf)
    sb.appendLine("-----END PUBLIC KEY-----", crlf: bCrlf)

    let pubkey = CkoPublicKey()!
    success = pubkey.load(from: sb.getAsString())
    if success == false {
        print("\(pubkey.lastErrorText!)")
        return
    }

    let rsa = CkoRsa()!
    success = rsa.use(pubkey)
    if success == false {
        print("\(rsa.lastErrorText!)")
        return
    }

    // We probably need a base64Url encoded encrypted key.
    // Using straight-up base64 would potenially include chars that are not URL safe (i.e. have special meanings in URLs)
    rsa.encodingMode = "base64url"

    var encryptedJson: String? = rsa.encryptStringENC(json.emit(), bUsePrivateKey: false)

    // Build the URL
    // Such as:  https://portal.everyware.com/Account/LoginMenu?data={Base64Url_encrypted_JSON}
    let sbUrl = CkoStringBuilder()!
    sbUrl.append("https://portal.everyware.com/Account/LoginMenu?data=")
    sbUrl.append(encryptedJson)

    print("\(sbUrl.getAsString()!)")

}