Good day,
A few months ago, we started noticing that we are getting occasional ApplePay SDK Data decryption errors when we attempt to decrypt the SDK Data payload that comes back from the ApplePay SDK.
We are using the C# BouncyCastle Dotnet package to handle the EllipticCurve decryption.
We find on average that about 2% of all our deposits are failing because the library fails to decrypt the ApplePay SDK Data payload with the error: "Mac check in GCM failed". It appears like ApplePay is maybe sending faulty payloads to us on occasion? Unless there is an issue with the BouncyCastle library? This is causing only a few transactions to fail per day, but we still need a solution for this.
Is anyone having the same issue or is there a contact from Apple I can get in touch with directly to share examples to assist with troubleshooting this?
Kind regards, Reon Fourie