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Hi everybody. I have been looking for some c++ source code or example for a CRC 128 bits, I already have de polinomial: x128 + x127 + x65 + x64 + x + 1
I have found many examples for crc until crc-32 but I have no idea about how to transform these examples into a crc-128... Could anybody help me in any way? thanks in advance
Posted 8-Nov-12 5:55am
dpcfire106
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JackDingler 9-Nov-12 16:07pm
   
Are you just having trouble implementing 128 bit integers?

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Solution 1

Try the following (not really a crc but anyway!): http://www.ythorn.com/y/ae/crc.html[^]
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dpcfire 9-Nov-12 3:11am
   
Thank you very much for your fast answer, I have already been reading that link, but It is not suitable for my development.

I have an unsigned char message[256] (including the crc-128 (16 last bytes of message) and I need to check that this crc is correct.

I have to implement the ekms crc-128 but I can't find any information about it. I only have the polinomial but I don't know how to obtain the crc.
I have found this example (that appears like a generic crc implementation) but I have many problems with the lenght of data (which C++ type do I have to use for the polinomial, and how can I do the mathematical operations with it?): This example is a CRC-16 (I think)


#include
dpcfire 12-Nov-12 3:14am
   
No ideas?...

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