"Unknown error - sw1: 0x63, sw2 - 0xCF ", 99, 207 about nfcpassportreader HOT 12 CLOSED

Not sure what this error means - I think it could possibly be a verify failed - but exactly what - I'm not sure.
Do you have any more detail on what was happening?

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This should be fixed (I hope). If you are still having issues please re-open.

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@AndyQ What did you change to fix this issue? I am getting it for Argentinian passports and my code is a bit out of sync with master so I need to merge manually.

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I think this was either the change to drop the data read amount down to 0xA0 (160), or possibly the padding around the MRZ Passport number (if its less than 9 chars, it needs to be padded with <)

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Thanks, I am already doing the padding. Will try 0xa0 as the starting point.

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@brqgoo Is this working for you now?

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@AndyQ thanks for the project. I am using much of it for https://svipe.com

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@brqgoo Is this working for you now?

Unfortunately, I don't have access to a Chinese passport atm. I can give an update when I have a chance to test it.

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I changed to 160 and still get the same problem

Any ideas what to do next?

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Turns out that https://github.com/Mattijah/QKMRZParser converts dates to Date with a particular TZ so when computing the MRZ for BAC dates are off by one if you are west of GMT...

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This should be fixed in the current version

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Just some info on sw1=0x63. According to ISO 7816-4 this is a warning. You can get sw=63CX when initiating BAC session and performing external authentication command. In this case the warning could mean that the authentication failed. Probably the reason for this is that provided MRZ data is wrong (assuming the implementation is correct) and 'X' in sw2 denotes max number of allowed retries (though some passports always return sw2=CF).

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