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I am using DUKPT to encrypt PIN for sending iso8385 Messages from a POS terminal to TermApp Postillion I am sure I am implementing the algorithm correctly and that I am sending the right KSN but I am getting this error from TermApp.

A PIN Translation failure occurred for terminal TEST0001 because 
Postilion exception: [postilion.realtime.sdk.crypto.XInvalidPinBlock]
Description: A cryptographic operation (translate DUKPT PIN with derived IPEK) involving key 'KEYSET_FFFFFF_BDK' failed, because invalid data was supplied. The invalid data was in field 'PIN block'. The data was invalid because PIN block invalid according to format NONE.

Any help from anyone who has worked with postillion will be appreciated.

Emmanuel Fore
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    Most probably it's a misalignment between the key used in the terminal and the key in the server, but the question is too vague to give a specific answer. You need to debug your issue with the server administration. – Andrés Alcarraz Sep 23 '21 at 10:32
  • @AndrésAlcarraz I'm sure we are using the same key. We have been trying to debug the issue with the administartion but we haven't made any progress. – Emmanuel Fore Sep 30 '21 at 07:08
  • It seems they have no much experience with the application. The server is failing on pin translation, but the keysetId is successfully locating the BDK. I was thinking that its some configuration error on the App. – Emmanuel Fore Sep 30 '21 at 07:22

1 Answers1

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I have found a solution. It seems I hadn't got information aboutthe pin block format. TermAppIso was configured to use the ISO-0 format on the pinblock,,

Emmanuel Fore
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