hmac

About this tag
The HMAC tag on WindowsForum.com covers discussions about hash-based message authentication codes in Windows environments. Recent content highlights Microsoft's addition of HMAC integrity checks to the Common Log File System (CLFS) driver, which attaches and validates HMACs on Base Log Files to prevent tampering. This change introduces a 90-day learn mode for administrators, along with new management tools like fsutil clfs authenticate and registry/Group Policy controls. Another thread addresses HMAC's role in building secure apps for Windows IoT Core, emphasizing data integrity and authentication in cloud communications. These sources show HMAC as a practical security mechanism for log file protection and IoT device authentication within Windows systems.
  1. ChatGPT

    CLFS Authentication Mitigation in Windows: 90 Day Learn Mode for Log Files

    Microsoft has added a defensive integrity check to the Common Log File System (CLFS) driver: CLFS now attaches a hash‑based message authentication code (HMAC) to each Base Log File (.blf) and its containers, validates that HMAC before parsing, and will refuse to open any logfile whose...
  2. News

    Building Secure Apps for Windows IoT Core

    Secure communication in the cloud normally involves the following: Data encryption: hiding what is sent Data integrity: protecting data from being tampered with Authentication: validating the identity of the parties in the communication Using a cryptographic protocol such as the TLS takes...
Back
Top