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#1 2020-05-29 10:26:26

iceman
Administrator
Registered: 2013-04-25
Posts: 9,497
Website

Old oyster card keygen algo?

It seems that the old oyster cards used a diversified key for their cards.
This keygen algo is unknown.

However if we can collect enough samples we might get somewhere. 
A PR over at RRG/Iceman repo had this set of keys.

Old London Oyster Card for London Public Transportation.

UID:  E7 76 E8 0B

[+] |-----|----------------|---|----------------|---|
[+] | Sec | key A |res| key B |res|
[+] |-----|----------------|---|----------------|---|
[+] | 000 | c298de483a13 | 1 | dd1867d87aac | 1 |
[+] | 001 | dbf57f3e6a9e | 1 | cc6aada1f15f | 1 |
[+] | 002 | 6f4c3703348b | 1 | cce8109d2b01 | 1 |
[+] | 003 | b8901fe2dd4b | 1 | a8005cccf6c7 | 1 |
[+] | 004 | 05737afac0ee | 1 | a658f4b77cbd | 1 |
[+] | 005 | 09036dc72217 | 1 | 4a1f917f6d7a | 1 |
[+] | 006 | 5f11583b4e0d | 1 | e3fe86265d0c | 1 |
[+] | 007 | 23c78fc0d9b1 | 1 | 995ce87e9330 | 1 |
[+] | 008 | 9de3922fe80e | 1 | de01d9cf7a40 | 1 |
[+] | 009 | b2aa8f3c7782 | 1 | fb9f860b6aa9 | 1 |
[+] | 010 | c23730318074 | 1 | 4a3eb564e37d | 1 |
[+] | 011 | 5b6853d7b26a | 1 | 58132a59a16d | 1 |
[+] | 012 | 76c4db09cf5c | 1 | b499da6650f6 | 1 |
[+] | 013 | e60a3c9ccffd | 1 | 111ce7d33be5 | 1 |
[+] | 014 | 69028bd32bbe | 1 | 29464ba6d644 | 1 |
[+] | 015 | 28d7212ef1b5 | 1 | 56f53dfbda9f | 1 |
[+] |-----|----------------|---|----------------|---|

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