MD5 Hash End of Life Moved to June 28, 2019

After reviewing feedback concerning the production cutoff date for the MD5 Hash, we are pushing back the production update from March 14, 2019, to June 28, 2019. We will continue to review feedback and consider further date changes as needed over the next month.

Please check the Authorize.Net Status page for updates and subscribe there for further email notifications.  Updates will also be posted in the Merchant and Partner Interface, Support Center,  and Developer Community.

For specific details on upgrading to use the SHA-512 hash, please see our support article: MD5 Hash End of Life & Signature Key Replacement.

Thank you for your attention to this matter.