Uptill now, Magento used the MD5 based hash to implement the Authorize.Net Direct Post payment method. But not anymore after Authorize.net announced MD5 Hash End of Life & Signature Key Replacement!

Hence, it is required to update Authorize.Net Direct Post from MD5 to SHA – 512 in Magento for capturing secure payments.

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Steps to Update Authorize.Net Direct Post from MD5 to SHA – 512 in Magento:

  1. Apply the patch
  2. Get a New Signature Key
  3. Update the Magento Admin Configuration



Check the detailed implementation of the above steps at https://meetanshi.com/blog/update-au...12-in-magento/

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