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To fix the issue, please refer to my answer in this forum post: https://community.developer.visa.com/t5/Implementation-API-Sample-Code/Field-Level-Encryption-univer...
There's also a file attachment in that forum post link above: VisaPublicKey_ForEncryption_Sbx_Cert (3).zip
still not awswered i want to know how to encrypt the address and email above using apikey and shared secret. i 've snet you the whole code above.
i didn't understand what is the use of the cert you attached,
can you please explain the process more because it is ambigious.
It's the Visa Public Key that you can use for encryption for sandbox testing. You can use the Visa Developer Center Playground tool for sandbox testing. Here's the link to the VDC Playground tool: https://developer.visa.com/pages/visa-developer-center-playground
Follow the directions and you'll use the .pem file for the Public Key.