Questions tagged [checksum]

The tag has no usage guidance.

5 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
35 views

Help with working out a checksum

I'm trying to work out how to reverse engineer the checksum on infrared remote data stream for a heat pump. I've established that it's not a CRC, and I've tried methods found on this forum. It doesn'...
2
votes
0answers
66 views

How to modify checksum after making changes in Nokia 215 4G firmware?

If I change any character in the firmware file and try to flash it, it will failed. But it will successfully flashed if I changed the string with the same number of character if it's not a function. ...
0
votes
0answers
46 views

Trying to find a checksum (possible CRC?) algorithm for CAN messages on a Porsche

I have the following problem. Besides CAN itself having a full checksum and stuff in the protocol, I have data sets where the first byte of the CAN message is some checksum generated in some unknown ...
0
votes
0answers
26 views

Is this a checksum/CRC response or cryptography?! Thanks

I've been pointed here from the Cryptography Stack Exchange so hopefully you can help me here! Long version of the story at the end....the short version is... I want to identify this CRC/cipher/crypto ...
0
votes
1answer
125 views

Checksum in CANbus Message

I'm trying to work out the calculation method for a checksum in a CAN message but I'm having some difficulties. I am unsure if there are actually 4 separate checksums, or one big one at the end of ...