hmacsha256 Questions

Auth data validation for Telegram WebApp HMAC-SHA256 in Java

January 5, 2024
Jamon
2 Answers

I'm trying to write auth data validation for the Telegram web app (HMAC-SHA256), according to this question: Data validating from Telegram Web App and CryptoJS I wrote the code in Java: @Test public void hmacTest() { String initData = "[initData]";…

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Why do words break into strange symbols when decrpyting authenticated text with OpenSSL on Ubuntu?

May 9, 2023
Hysperion
2 Answers

I am working on using OpenSSL in Linux Ubuntu to perform authenticated encryption/decryption. I am currently using C for the code, AES-CTR Encryption method for ciphering the text, HMAC-SHA256 for the tag. My code works by using Makefile for command…

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