All Apps and Add-ons

Hashing method for initCrc

RicoSuave
Builder

What is the method that splunkd uses to hash the first 256 bytes of a file that is being monitored?

1 Solution

yannK
Splunk Employee
Splunk Employee

a bit of magic.
http://en.wikipedia.org/wiki/Computation_of_CRC

Remarks about CRC options.

  • You can add the source to the calculation (crcSalt= with SOURCE in caps in inputs.conf)
  • and since Splunk 5.0 you can setup a longer CRC (initCrcLength in inputs.conf)

View solution in original post

yannK
Splunk Employee
Splunk Employee

a bit of magic.
http://en.wikipedia.org/wiki/Computation_of_CRC

Remarks about CRC options.

  • You can add the source to the calculation (crcSalt= with SOURCE in caps in inputs.conf)
  • and since Splunk 5.0 you can setup a longer CRC (initCrcLength in inputs.conf)

RicoSuave
Builder

Really i'm just curious.

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Data Management Digest – September 2026

    Welcome to the September 2026 edition of Data Management Digest! September brought a fresh wave of ...

Federated Search for CloudWatch Unified Data Store Is Generally Available

As organizations modernize their cloud environments, AWS workloads generate more security, operational, and ...

Announcing Modern Navigation: A New Era of Splunk User Experience

We are excited to introduce the Modern Navigation feature in the Splunk Platform, available to both cloud and ...