Signature Algorithm

Apply hash algorithm SHA256 with Salt.

Signature = SHA256(SignData + Salt)

// Salt = GO@2021

// JSON Data (JSON Object)
{
    "requestID": "14653fa1-2f69-4f4f-9d4b-240e1bebbdf3",
    "requestDateTime": 20220426083322,
    "requestData": {
        "apiOperation": "PAY",
        "orderID": "2a43e4b9-c5df-49e6-8b18-42af9bcd150e",
        "orderNumber": 205249008064,
        "orderAmount": 100000,
        "orderCurrency": "VND",
        "orderDateTime": 20220426083322,
        "orderDescription": "DEMO TRANSACTION",
        "paymentMethod": "DOMESTIC",
        "sourceType": "970400",
        "language": "vi"
    }
}

// JSON String (JSON Serialized as string)
{"requestID":"14653fa1-2f69-4f4f-9d4b-240e1bebbdf3","requestDateTime":20220426083322,"requestData":{"apiOperation":"PAY","orderID":"2a43e4b9-c5df-49e6-8b18-42af9bcd150e","orderNumber":205249008064,"orderAmount":100000,"orderCurrency":"VND","orderDateTime":20220426083322,"orderDescription":"DEMO TRANSACTION","paymentMethod":"DOMESTIC","sourceType":"970400","language":"vi"}}

// Signature = SHA256(SignData + Salt) 
b4b7cb5596680bb343f399922fc32e63fd69191c573e83c0383fd734531eab03