PII masking for Rust applications.

mask-pii helps you mask sensitive strings such as email addresses and phone numbers before logging, exporting, or sharing data.

Get Started Open Crate

Email masking

Masks local parts while preserving domains: alice@example.com -> a****@example.com.

Phone masking

Masks middle digits while preserving formatting: +1 (800) 123-4567 -> +1 (***) ***-4567.

Flexible config

Enable only the rules you need and customize the mask character and behavior.

Install and Use

Add the crate with cargo add mask-pii (or mask-pii = "0.1.0" in Cargo.toml), then configure a masker and process input text.

Install

cargo add mask-pii

Usage

main.rs

use mask_pii::Masker;

fn main() {
  // Configure masking rules
  let masker = Masker::new()
    .mask_emails()
    .mask_phones()
    .with_mask_char('#');

  let input = "Contact: alice@example.com or 090-1234-5678.";
  let output = masker.process(input);

  println!("{}", output);
  // Output: "Contact: a####@example.com or 090-####-5678."
}

One More Tip

Start from Masker::new() and enable only the masking rules required by your system. You can combine email and phone masking in a single pipeline.

Overview

Install