Class HMACSignature

java.lang.Object

com.huntertechpay.security.HMACSignature

public class HMACSignature
extends Object

Utility class for generating HMAC-SHA512 signatures for API requests.

HunterTechPay requires HMAC-SHA512 signatures for all non-GET requests to ensure request authenticity and integrity.

Example usage:

 String signature = HMACSignature.generateSignature(
     secretKey,
     timestamp,
     jsonPayload
 );
 

Constructor Summary

Constructors

Constructor	Description
HMACSignature()

Method Summary

Modifier and Type	Method	Description
static String	generateSignature(String secretKey, long timestamp, String payload)	Generate HMAC-SHA512 signature for API request.
static long	getCurrentTimestamp()	Get current Unix timestamp in seconds.
static boolean	verifySignature(String secretKey, long timestamp, String payload, String expectedSignature)	Verify HMAC signature for webhook validation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

HMACSignature

public HMACSignature()

Method Details

generateSignature

public static String generateSignature(String secretKey,
 long timestamp,
 String payload)

Generate HMAC-SHA512 signature for API request.

Parameters:

secretKey - The merchant secret key

timestamp - Unix timestamp in seconds

payload - JSON payload as string

Returns:

Hexadecimal signature string

Throws:

SecurityException - if signature generation fails

verifySignature

public static boolean verifySignature(String secretKey,
 long timestamp,
 String payload,
 String expectedSignature)

Verify HMAC signature for webhook validation.

Parameters:

secretKey - The merchant secret key

timestamp - Unix timestamp from webhook header

payload - Webhook payload

expectedSignature - Signature from X-Hunter-Signature header

Returns:

true if signature is valid

getCurrentTimestamp

public static long getCurrentTimestamp()

Get current Unix timestamp in seconds.

Returns:

Current timestamp