# Data masking capabilities

Masking functions in the tDataMasking component are consistent, bijective and/or random functions, and they can check that the input data is in a valid format.

### In this section

* [Random data masking](https://help.qlik.com/talend/en-US/components/7.3/data-privacy/random-data-masking)
* [Consistent data masking](https://help.qlik.com/talend/en-US/components/7.3/data-privacy/consistent-data-masking)
* [Bijective data masking](https://help.qlik.com/talend/en-US/components/7.3/data-privacy/bijective-data-masking)
* [Repeatable data masking](https://help.qlik.com/talend/en-US/components/7.3/data-privacy/repeatable-data-masking)