NullPointerException thrown when unpacking data about emv-bertlv HOT 2 CLOSED

Fixed by d49a180#diff-9c354da30936a2dab18e233b468f309b

I used your example as a test case, which now passes.

I guess some cards use values 0x85-0xFF in the length byte to encode lengths of 133-255 bytes. In your example that's 0x91 = 145 bytes. The code was interpreting that as a length encoded in 17 bytes. Which also isn't valid..

One spec mentions 0x91 in the first length byte is invalid http://www.embedx.com/pdfs/ISO_STD_7816/info_isoiec7816-4%7Bed21.0%7Den.pdf

In ISO/IEC 7816, the values '80' and '85' to 'FF' are invalid for the first byte of length fields.

I guess either there's a different spec or what's actually in production defines what's valid 😄. Either way it now parses.

from emv-bertlv.

Now works here too http://tvr-decoder.appspot.com/t/decode/constructed/EMV/709157134761739001010119D22122011143804400000F5F201A5541542041544D2F5465737420436172642030352020202020205F300202019F1F183131343338303434303030303030303030303030303030309F080200969F4401028C159F02069F03069F1A0295055F2A029A039C019F37048D178A029F02069F03069F1A0295055F2A029A039C019F37049F49039F3704

Thanks for the report

from emv-bertlv.