gchq/CyberChef

Operation request: ISO14443 SmartCards algorithms (CRC16, BCC)

Open

#9 opened on 2016年11月29日

GitHub で見る
 (3 comments) (4 reactions) (0 assignees)JavaScript (3,944 forks)batch import
help wantedoperation

Repository metrics

Stars
 (34,843 stars)
PR merge metrics
 (平均マージ 57d 13h) (30d で 62 merged PRs)

説明

Thank you for great tool!

It will be nice to see algorithms from ISO14443 and ISO13239 contactless smartcards standards.

  • CRC16_A Initial register 0x6363 or 0xC6C6 in reversed bit order. Polynomial is 0x1021 and no final XOR.
  • CRC16_B
  • BCC (Bit Count Check) — simple successively XOR-ing all bytes

I've made my own calculator for example https://hub.zhovner.com/tools/nfc/

コントリビューターガイド