Category "tlv"

Why BER-TLV "DF9A" tag is recognized as "invalid"?

I have problem with understanding why all the BER-TLV parsers I found: https://paymentcardtools.com/emv-tlv-parser https://emvlab.org/tlvutils/ https://chrome.g

How to parse nested TLV structures

This is TLV code: 30 3e 31 0b 30 09 06 03 55 04 06 13 02 50 4c 31 1b 30 19 06 03 55 04 0a 13 12 55 6e 69 7a 65 74 6f 20 53 70 2e 20 7a 20 6f 2e 6f 2e 31