Add a checksum

Description

This step calculates checksums for one or more fields in the input stream and adds this to the output as a new field.

Option	Description
Step name	Name of the step. *Note*: This name has to be unique in a single transformation.
Type	The type of checksum that needs to be calculated. These are the types that are available: CRC32 : 32-bit Cyclic Redundancy Check : http://en.wikipedia.org/wiki/Cyclic_redundancy_check ADLER 32 : Checksum algorithm by Mark Adler: http://en.wikipedia.org/wiki/Adler-32 MD5 : Message Digest algorithm 5 : http://en.wikipedia.org/wiki/MD5 SHA-1 : Secure Hash Algorithm 1 : http://en.wikipedia.org/wiki/SHA-1
Result field	The name of the result field containing the checksum
Fields used in the checksum	The names of the fields to include in the checksum calculation. Note: You can use the "Get Fields" button to insert all input fields from previous steps.

A simple CRC32 sample can be found in this folder of your Kettle distribution:

samples/transformations/Add a checksum - Basic CRC32 example.ktr