com.cybersource.authsdk.http

Class SignatureGenerator

java.lang.Object

com.cybersource.authsdk.http.SignatureGenerator

public class SignatureGenerator
extends Object

Module to generate digital signature which is then passed to signature header parameter

The signature is created from the following values and then signed with Secret Key

host - Sandbox (apitest.cybersource.com) or Production (api.cybersource.com) hostname

date - HTTP-date with format as defined by RFC7231

request-target - Should be in format of httpMethod: path

                 Example : post /pts/v2/payments
 

Digest - Only needed for POST calls

v-c-merchant-id - Cybersource Merchant ID found on EBC portal

Constructor Summary

Constructors

Constructor and Description
SignatureGenerator(MerchantConfig merchantConfig, String method) Constructs a signature generator for HTTP signature authentication.

Method Summary

Modifier and Type	Method and Description
String	getRequestTarget(String requestType, String reqTarget) Formats the request target based on the HTTP request type.
String	signatureGeneration(String requestData, String reqTarget, String date) Generates the HTTP signature for the request.

Methods inherited from class java.lang.Object

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

Constructor Detail

SignatureGenerator

public SignatureGenerator(MerchantConfig merchantConfig,
                          String method)
                   throws InvalidKeyException,
                          NoSuchAlgorithmException,
                          ConfigException

Constructs a signature generator for HTTP signature authentication.

Parameters:

merchantConfig - contains all information of merchant

method - the HTTP request method

Throws:

InvalidKeyException - if key is not valid.

NoSuchAlgorithmException - if algorithm is not available.

ConfigException - if merchant configuration is invalid

Method Detail

signatureGeneration

public String signatureGeneration(String requestData,
                                  String reqTarget,
                                  String date)
                           throws NoSuchAlgorithmException,
                                  InvalidKeyException

Generates the HTTP signature for the request.

Parameters:

requestData - the request payload data

reqTarget - the request target URL path

date - the date string for the request

Returns:

generated signature.

Throws:

NoSuchAlgorithmException - if algorithm is not available.

InvalidKeyException - if key is not valid.

getRequestTarget

public String getRequestTarget(String requestType,
                               String reqTarget)

Formats the request target based on the HTTP request type.

Parameters:

requestType - the HTTP request type (GET/PUT/POST/PATCH/DELETE)

reqTarget - the request target URL path

Returns:

request target as per request type.