Authorize.Net Direct Post Security Upgrade: Updating MD5 to SHA-512

Authorize.Net Direct Post Security Upgrade

Authorize.Net – the most popular payment gateway service provider in the world – is in the process of making a big change to how it verifies transactions, and that change impacts the business of every single one of their Direct Post users.

The company is phasing out MD5-based hashing and switching to SHA-512 signature key hashing. The last stage of the switch goes into effect on June 27th, 2019, and every business using Authorize.Net Direct Post, including BAMS users, will have to switch over before that date to avoid interruptions to their payment processing services.

To a lot of merchants, this might be a confusing topic or seem like an unnecessary hassle, but this change is an important step in keeping Authorize.Net’s transaction security on the cutting edge – something that benefits every single merchant on the platform.

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