Splunk® Enterprise

Search Reference

Download manual as PDF

Splunk Enterprise version 7.0 is no longer supported as of October 23, 2019. See the Splunk Software Support Policy for details. For information about upgrading to a supported version, see How to upgrade Splunk Enterprise.
Download topic as PDF

Cryptographic functions

The following list contains the functions that you can use to compute the secure hash of string values.

For information about using string and numeric fields in functions, and nesting functions, see Evaluation functions.

md5(X)

Description

This function computes and returns the MD5 hash of a string value X.

Usage

You can use this function with the eval, fieldformat, and where commands, and as part of eval expressions.

Basic examples

The following example returns a new field n with a message-digest (MD5) 128-bit hash value for the phrase "Hello World".

... | eval n=md5("Hello World")


The following example creates a large random string.

| makeresults count=32768 | eval message=md5("". random()) | stats values(message) as message | eval message = mvjoin(message, "")

  • The makeresults command creates 32768 results with timestamps.
  • The eval command creates a new field called message:
    • The random function returns a random numeric field value for each of the 32768 results. The "". makes the numeric number generated by the random function into a string value.
    • The md5 function creates a 128-bit hash value from the string value.
    • The results of the md5 function are placed into the message field created by the eval command.
  • The stats command with the values function is used to convert the individual random values into one multivalue result.
  • The eval command with the mvjoin function is used to combine the multivalue entry into a single value.

sha1(X)

Description

This function computes and returns the secure hash of a string value X based on the FIPS compliant SHA-1 hash function.

Usage

You can use this function with the eval, fieldformat, and where commands, and as part of eval expressions.

Basic example

... | eval n=sha1("Put that in your | and Splunk it.")


sha256(X)

Description

This function computes and returns the secure hash of a string value X based on the FIPS compliant SHA-256 hash function.

Usage

You can use this function with the eval, fieldformat, and where commands, and as part of eval expressions.

Basic example

... | eval n=sha256("Can you SPL?")


sha512(X)

Description

This function computes and returns the secure hash of a string value X based on the FIPS compliant SHA-512 hash function.

Usage

You can use this function with the eval, fieldformat, and where commands, and as part of eval expressions.

Basic example

... | eval n=sha512("You bet your sweet SaaS.")

Last modified on 22 August, 2020
PREVIOUS
Conversion functions
  NEXT
Date and Time functions

This documentation applies to the following versions of Splunk® Enterprise: 6.6.0, 6.6.1, 6.6.2, 6.6.3, 6.6.4, 6.6.5, 6.6.6, 6.6.7, 6.6.8, 6.6.9, 6.6.10, 6.6.11, 6.6.12, 7.0.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4, 7.0.5, 7.0.6, 7.0.7, 7.0.8, 7.0.9, 7.0.10, 7.0.11, 7.0.13, 7.1.0, 7.1.1, 7.1.2, 7.1.3, 7.1.4, 7.1.5, 7.1.6, 7.1.7, 7.1.8, 7.1.9, 7.1.10, 7.2.0, 7.2.1, 7.2.2, 7.2.3, 7.2.4, 7.2.5, 7.2.6, 7.2.7, 7.2.8, 7.2.9, 7.2.10, 7.3.0, 7.3.1, 7.3.2, 7.3.3, 7.3.4, 7.3.5, 7.3.6, 7.3.7, 8.0.0, 8.0.1, 8.0.2, 8.0.3, 8.0.4, 8.0.5, 8.0.6


Was this documentation topic helpful?

Enter your email address, and someone from the documentation team will respond to you:

Please provide your comments here. Ask a question or make a suggestion.

You must be logged into splunk.com in order to post comments. Log in now.

Please try to keep this discussion focused on the content covered in this documentation topic. If you have a more general question about Splunk functionality or are experiencing a difficulty with Splunk, consider posting a question to Splunkbase Answers.

0 out of 1000 Characters