Anonymization

Node for hashing (SHA-1) the values in the columns with multiple salting strategies.

Options

Salting

The node applies SHA-1 algorithm for hashing values in selected columns. All values are converted to string then additional information might be concatenated to this string for salting. There are four salting strategies:

None - values in selected columns are hashed as they are, no additional concatenation is used;
Random - random seed is used for salting every time node is executed. It is possbile to use a fixed seed value.
Column - values from additional column is used for salting. Values from selected columns are concatenated row-wise.
Timestamp - selected date and time are used for salting.

Debug Mode

If activated no hashing will be applied, instead only values with or without salting will be returned.

Input Ports

: Input table for anonymization

Output Ports

: Table with anonymized data
: Dictionary table with hashed and original values

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Workflows

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Installation

To use this node in KNIME, install the extension Redfield Privacy Nodes from the below update site following our NodePit Product and Node Installation Guide:

v5.12

Plugin provider: Redfield AB

Plugin version: 0.3.26

On NodePit since: 2026-07-06

Last update: 2026-07-21

KNIME versions: v5.12, v5.11, v5.10, v5.9, v5.8, v5.7, v5.6, v5.5, v5.4, v5.3, v5.2, v5.1, v4.7, v4.6, v4.5, v4.4, v4.3, v4.2, v4.1, v4.0

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