# Replace all This function masks all characters from the input values. This function can be used on Strings. When using the FF1 with AES and FF1 with SHA-2 methods, the input values must contain at least two characters to mask. Otherwise, the function returns null. | Option | Description | | --- | --- | | Method | The Randomly method randomly selects a character. As a
result, two identical input values can be masked with the different output
values.

When the same value appears twice in the input data, the
Consistently method ensures that the function outputs
the same masked value in the same Job execution.

This function can encrypt the output masked
values in the same format as the input values, using Format-Preserving Encryption (FPE)
methods:



The FPE methods are bijective methods, except when
using tweaks.

The FF1 with
AES and FF1 with SHA-2 methods
require a password to generate encrypted and repeatable masked values. Those FPE methods
do not use a seed.

You can specify this password in the Password or
256-bit key for FF1 methods field, from the Advanced
Settings of the component. | | Extra parameter | The optional extra parameter must be a character. | The following table shows examples of masked values depending on the input value, the method, and the extra parameter. | Input value | Method | Alphabet | Extra parameter | Example of a masked value | Details | | --- | --- | --- | --- | --- | --- | | Jack | Randomly | - | "a" | aaaa | All characters are replaced with the character defined as an extra
parameter. | | S1000D | Randomly | - | "4" | 444444 | All characters are replaced with the character defined as an extra
parameter. | | S1000D | FF1 with SHA-2 | Best guess | - | 2MTW72 | The masked value contains characters from all alphabets represented in the
input value. |