zigtur / lfsr-lsb-steganography

This repository contains an implementation of the LSB technique to hide encrypted messages in images using LFSR cryptography.

About Zigtur

Zigtur is an independent blockchain security researcher dedicated to enhancing the security of the blockchain ecosystem. With a history of identifying numerous security vulnerabilities across various protocols in public audit contests and private audits,

Zigtur strives to contribute to the safety and reliability of blockchain projects through meticulous security research and reviews. Explore previous work here or reach out on X @zigtur.

Portfolio

Rust and Rust-variants

Project	Project review type	Date	Review type	Result
Grass	Smart contract - Solana	June 2024	Cantina Competition	Rank: 2nd 🥈
PumpAMM	Smart contract - Solana	May 2024	Private audit	Private
Allbridge Estrela	Smart contract - Soroban	April 2024	Private audit	Audit report
Allbridge Core	Smart contract - Soroban	February 2024	Private audit	Audit report
Olas	Smart contract - Solana	January 2024	Cantina Competition	Rank: 5th
Opus	Smart contract - Cairo	January 2024	Code4rena Contest	Rank: 5th
KUKSA.val	Infrastructure (non-Web3)	December 2023	Private audit	Audit report & Blogpost

Solidity and EVM

Project	Project review type	Date	Review type	Result
CyberDEX	Smart contract	June 2024	Private audit	Audit report
Enzym	Smart contract	June 2024	Private audit	Audit report
AAVE v3.1	Smart contract	May 2024	Cantina Competition	Rank: 3rd 🥉
Alchemix	Smart contract	April 2024	Sherlock Contest	Rank: 1st 🥇
Optimism	Smart contract	April 2024	Sherlock Contest	Rank: 6th
Venus Protocol	Smart contract	March 2024	Cantina Competition	Rank: 2nd 🥈
EigenLayer	Smart contract	March 2024	Cantina Competition	Rank: 2nd 🥈
3DNS	Smart contract	February 2024	Cantina Competition	Rank: 1st 🥇
Blast	Smart contract & Infrastructure (Go)	February 2024	Cantina Competition	Rank: 6th
Opal	Smart contract	February 2024	Cantina Competition	Rank: 16th
zkSync Era	Smart contract & Infrastructure (Rust)	October 2023	Code4rena Contest	Rank: 16th & Blogpost
HeyMint	Smart contract	July 2023	Private audit	Audit report
HeyMint	Smart contract	April 2023	Private audit	Audit report

Go

Project	Project review type	Date	Review type	Result
Babylon Chain	Infrastructure	June 2024	Cantina Competition	Rank: 2nd 🥈
Blast	Smart contract & Infrastructure (Go)	February 2024	Cantina Competition	Rank: 6th

Learnings

Project	Type	Date	Link
BLS signature	Cryptography	March 2024	BLS-signature
Groth16 Python implementation	Cryptography	November 2023	Groth16
RareSkills ZK Book	Cryptography	November 2023	Rareskills-ZK-book
RareSkills Solidity Bootcamp	Solidity	February to July 2023	Rareskills-Solidity-Bootcamp