Java

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. Chilkat2 Java

import com.chilkatsoft.chilkat2.BinData;
import com.chilkatsoft.chilkat2.Crypt2;
import com.chilkatsoft.chilkat2.JsonObject;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example assumes the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

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

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

        JsonObject json = new JsonObject();
        json.load(jsonStr);

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

        bdNotif.appendEncoded(json.stringOf("notification"), "base64");
        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.

        Crypt2 crypt = new 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.setEncodingMode("hex_lower");
        crypt.setHashAlgorithm("sha1");
        String hexSha1 = crypt.hashStringENC(secretKey);
        System.out.println(hexSha1);

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

        crypt.setKeyLength(256);
        crypt.setCryptAlgorithm("aes");
        crypt.setCipherMode("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);
        System.out.println("Decrypted: " + bdNotif.getString("utf-8"));
    }
}