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Random numeric masking

To mask numeric data, you configure a range of output values for a field.

The

masking

task returns a value between the minimum and maximum values of the range depending on field precision. To define the range, configure the minimum and maximum ranges or a blurring range based on a variance from the original source value.

The following table describes the parameters that you can configure for random masking of numeric data:

Masking parameter	Description
Range	A range that you want to set for the numeric data. Select the check box to enter a minimum and maximum range.
Minimum Range	The minimum value of the range.
Maximum Range	The maximum value of the range. The maximum value must be greater than the minimum value.
Blurring	A range of output values that are within a fixed variance or percent variance of the source data. Select the check box to enter blurring details.
Blurring Option	The unit of blurring. Select Fixed or Percent. Default is Fixed.
Low Bound	The low boundary of the variance from the source number.
High Bound	The high boundary of the variance from the source number.

Numeric blurring

To blur a numeric source value, select a fixed or percent variance, a high bound, and a low bound. The high and low bounds must be greater than or equal to zero.

The following table lists the

masking

results for blurring range values when the input source value is 66:

Blurring type	Low	High	Result
Fixed	0	10	Between 66 and 76
Fixed	10	0	Between 56 and 66
Fixed	10	10	Between 56 and 76
Percent	0	50	Between 66 and 99
Percent	50	0	Between 33 and 66
Percent	50	50	Between 33 and 99