Can you give me advice? How to execute HPB request?

[andrew-svirin]

Where can I get DigestValue and DigestValue ?

[charlycoste]

Sorry AndriySvirin but for now, we are still working on a PHP implementation to process digest values as we didn't find any native function which can perfectly match the one used by banks.
(We are facing a problem to handle a specific "padding" with RSA algorithm)
We still need to do some reverse engineering on the Java Bouncy Castle library.