CODEWITHSUNDEEP
hashsynchronizationrsyncchecksum
Satthy
Satthy

Reputation: 119

Week and Strong Rolling Checksum

I'm doing a file sync application. for that I need to calculate both week and strong checksum for a file in client application and send it to the server. At the sever side, server needs to compare these checksum against a similar file (finding similar file is already implemented). I need week checksum to be 32 bit number and strong checksum to be 64 bit number. I got rSync source code but I couldn't figure it out how it works. If anyone familiar with these algorithm, please help me.

Thanks.

Upvotes: 0

Views: 408

Answers (1)

fabspro
fabspro

Reputation: 1679

Refer to this: http://rsync.samba.org/tech_report/tech_report.html

It's pretty simple, and it is demonstrated in rsync's source code (see checksum.c).

Upvotes: 1

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