We are confused about the "MD5 Hash End of Life & Signature Key Replacement" notification.
We currently use the modern API (not legacy) with PHP code based on what is on GitHub:
Just as on the sample code here, we are not currently using Signature Keys of either MD5 or SHA-512. We are doing just basic, one-time charges based on the GitHub sample code.
Can we continue using this code even after the MD5 hash reaches end of life in June?
In other words: Will the sample code included in GitHub, linked above, continue to work for charging cards without the use of SHA-512 Signature Keys?