Feistel cipher implementation for format-preserving encryption

NIST standard Format-preserving encryption FF3-1 implementation

Chiffrement Feistel maison 16 rounds

A crude implementation of a feistel cipher

Keyed, reversible permutation for obfuscating sequential integer IDs: a 40-bit format-preserving Feistel network with an ARX round function, plus an optional base62 encoding.

Secure, lightweight library for obfuscating auto-increment IDs with Feistel cipher - prevents ID enumeration attacks while keeping URLs short

An implementation of a 3 rounds of Feistel around AES 2-transformation 1-subtitution step. Supposed to be a pseudorandom permutation.

Redacting classified documents

baseH: reversible, checksummed, human-safe short references for integers.

Gas-efficient stateless Thorp shuffles written in Solidity and Yul.

baseH: reversible, checksummed, human-safe short references for integers.

Rand-Vec-Sig: self-developed signature + request payload encryption system with dual-mode traffic obfuscation (zero runtime dependencies).

A nodejs library for Format Preserving Encryption that encrypts & decrypts the input in FF1 mode

Arbitrary block length encryption of integers and binary data.

TypeScript implementation of SLIP-0039 Shamir Secret Sharing for mnemonic seed phrases

A library that uses pseudorandom permutations to generate human-friendly IDs.

This packages has core functionalities for s-des encryption and decryption

Arbitrary block length cipher and decipher class.

Stateless, reversible integer obfuscation - Convert sequential IDs to URL-safe strings without database storage

MDKVA EncryptionKit provides clean, reliable, and easily accessible encryption options ideal for apps, AI systems, and automation projects.