Node.js

ClickBank Decrypt Instant Notification

See more ClickBank Examples

Demonstrates how to decrypt a ClickBank instant notification. See Instant Notification Service for more information and alternative code snippets. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    // secret key from your ClickBank account
    var secretKey = "MY_SECRET_KEY";

    var jsonStr = "{\"notification\":\"BASE64_NOTIFICATION\",\"iv\":\"BASE64_IV\"}";

    var json = new chilkat.JsonObject();
    success = json.Load(jsonStr);

    // Get the encrypted notification (binary) and IV from the JSON.
    var bdNotif = new chilkat.BinData();
    var bdIv = new chilkat.BinData();

    success = bdNotif.AppendEncoded(json.StringOf("notification"),"base64");
    success = bdIv.AppendEncoded(json.StringOf("iv"),"base64");

    // Get an SHA1 digest (as a hex string) of the secret key.
    // A SHA1 digest is 20 bytes.  Therefore the hex string is 40 chars.
    // Treat each us-ascii char as a binary byte of the secret key.
    // 256-bit AES needs a 256-bit key, which is 32-bytes.  Therefore
    // use the 1st 32 us-ascii chars of the hex SHA1 as the AES secret key.

    var crypt = new chilkat.Crypt2();
    // Because we're using the hex string as the actual AES key, it matters whether the hex is uppercase or lowercase.
    // We want lowercase.
    crypt.EncodingMode = "hex_lower";
    crypt.HashAlgorithm = "sha1";
    var hexSha1 = crypt.HashStringENC(secretKey);
    console.log(hexSha1);

    // Treat the hex string as binary data for the AES key..
    var bdKey = new chilkat.BinData();
    bdKey.AppendString(hexSha1,"us-ascii");
    bdKey.RemoveChunk(32,8);

    crypt.KeyLength = 256;
    crypt.CryptAlgorithm = "aes";
    crypt.CipherMode = "cbc";

    // We can use any encoding because were just getting the binary bytes in an encoding, and then setting from the same encoding.
    // We'll just use base64..
    crypt.SetEncodedIV(bdIv.GetEncoded("base64"),"base64");
    crypt.SetEncodedKey(bdKey.GetEncoded("base64"),"base64");

    crypt.DecryptBd(bdNotif);
    console.log("Decrypted: " + bdNotif.GetString("utf-8"));

}

chilkatExample();