Audited & minimal JS implementation of Salsa20, ChaCha and AES

A format-preserving encryption implementation in Go

Format-Preserving Encryption Implementation in Java

Format-preserving encryption in Rust

scramble is a Go library that performs format-preserving scrambling and unscrambling of numeric values using the FF1 FPE algorithm.

NIST FF1 CLI tool. Uses input files consisting of one (large) hex line.

Format Preserving Encryption in Go

Browser-based format-preserving encryption demo — FF1 and FF3-1 live tokenization of credit cards, SSNs, and phone numbers. Real AES-256 Feistel rounds. No backends. No simulated math.

Canonical Flutter mobile controller and library app for FF1 and The Digital Art System.

Python implementation of format preserving encryption defined as a NIST draft (FF1, FF3-1)