com.nxp.nfclib.exceptions.InvalidResponseLengthException Parameter Error

[Huzefa gadi]

Hello,

I am trying to read a desire EV2 card using the sample app provided. but when I am trying to authenticate the application it throws this com.nxp.nfclib.exceptions.InvalidResponseLengthException Parameter Error everytime. can you please help with what's wrong. here is my code snippet

      desFireEV2.selectApplication(0);

            KeyData desKeyDataDefault = new KeyData();

            Key key = new SecretKeySpec(SampleAppKeys.KEY_AES128, "AES");

            desKeyDataDefault.setKey(key);

            int[] appIds = desFireEV2.getApplicationIDs();

            for (int appId : appIds) {

                byte[] fileIds = desFireEV2.getFileIDs();

                for (byte fileId : fileIds) {

                    desFireEV2.authenticate(appId, IDESFireEV1.AuthType.AES,KeyType.AES128,desKeyDataDefault);

                    byte[] data = desFireEV2.readData(fileId, 0, 0,IDESFireEV1.CommunicationType.Enciphered,16);

                }

             }

It throws error at desFireEV2.authenticate() method. Please help

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[TapLinx Support]

Hi Huzefa,

It seems that you use the wrong cipher. If the card is blank (not initialized before) the key is a 2K3DES key. Using a AES cipher, you must change the key from 2K3DES to AES.

The TapLinx team

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