HMAC SHA1 of Byte Array in “C” Programming Language
Here is a “C” programming language code snippet compute the HMAC SHA1 using byte arrays.
Adyen C# HMAC Signature Calculation for Hosted Payment Page (HPP)
This is a C# example (Razor Pages in ASP.NET) showing how to do the HMAC signature calculation for a Adyen Hosted Payment Page…
HMAC Hex Key Ambiguity
This happens all the time.. Quite often, a service provider will provide instructions for HMAC generation, and will provide a hexadecimal HMAC key in the example, such as: 01A0251D601FEF3305A38B124068A001CF3F099AA187DB2886314C67CDFDEBCD This is implicitly ambiguous because there are two ways to interpret the instructions: 1) The HMAC key is composed of the ascii bytes ‘0’, ‘1’, ‘A’, ‘0’, ‘2’, ‘5’, etc. In […]