Xiaomao (@NjeriiChan)

Anonymous Blockchain Voting is Impossible (I Was Wrong)

First, you'll think it's impossible. "Anonymous voting on a public blockchain?" Then, after you understand the basics, you'll think it's simple. "Oh, you just hash some secrets and use a Merkle tree. Easy!" You'll be wrong both times. The real insigh...

Jan 27 · 18 min readnjerii.hashnode.dev

P3RF3CT ROOT CTF 2025 Writeup - Web3 & Cryptography

Introduction "See you at the next CTF! Maybe next time I'll see less dust and capture more flags!" Well, past me... I'm happy to report: MISSION ACCOMPLISHED. 🎉 Last year, I stumbled through the P3rf3ctr00t CTF like a newborn deer on ice. Wide-eyed,...

Dec 8, 2025 · 45 min readnjerii.hashnode.dev

My Leap Into Zero Knowledge: A ZkForge Bootcamp Journey

When I joined the ZkForge Bootcamp by ZKMonk, I wasn’t sure what to expect. I only knew one thing: I needed structure. Zero-knowledge proofs had been this vast ocean I was swimming in, reading papers, tinkering with toy examples, but never fully know...

Sep 25, 2025 · 4 min readnjerii.hashnode.dev

Advent of Rust 2024: Day 2—References in Rust 🦀

Borrowing without ownership Yesterday, we solved the ownership puzzle using .clone(). Today, I am introducing a more elegant solution: references! Original Code (Ownership Transfer) fn main() { let gift_message = String::from("Merry Christmas! En...

Dec 15, 2024 · 4 min readnjerii.hashnode.dev

Advent of Rust 2024: Day 1 - Rust's Ownership🦀

The Original Challenge fn main() { let gift_message = String::from("Merry Christmas! Enjoy your gift!"); attach_message_to_present(gift_message); println!("{}", gift_message); } fn attach_message_to_present(message: String)...

Dec 14, 2024 · 2 min readnjerii.hashnode.dev

Xiaomao

About

Available for

Xiaomao's blogs

Anonymous Blockchain Voting is Impossible (I Was Wrong)

P3RF3CT ROOT CTF 2025 Writeup - Web3 & Cryptography

My Leap Into Zero Knowledge: A ZkForge Bootcamp Journey

Advent of Rust 2024: Day 2—References in Rust 🦀

Advent of Rust 2024: Day 1 - Rust's Ownership🦀

Xiaomao

About

Available for

Xiaomao's blogs

Anonymous Blockchain Voting is Impossible (I Was Wrong)

P3RF3CT ROOT CTF 2025 Writeup - Web3 & Cryptography

My Leap Into Zero Knowledge: A ZkForge Bootcamp Journey

Advent of Rust 2024: Day 2—References in Rust 🦀

Advent of Rust 2024: Day 1 - Rust's Ownership🦀

Xiaomao

About

Available for

Xiaomao's blogs

Anonymous Blockchain Voting is Impossible (I Was Wrong)

P3RF3CT ROOT CTF 2025 Writeup - Web3 & Cryptography

My Leap Into Zero Knowledge: A ZkForge Bootcamp Journey

Advent of Rust 2024: Day 2—References in Rust 🦀

Advent of Rust 2024: Day 1 - Rust's Ownership🦀

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Xiaomao

About

Available for

Xiaomao's blogs

Anonymous Blockchain Voting is Impossible (I Was Wrong)

P3RF3CT ROOT CTF 2025 Writeup - Web3 & Cryptography

My Leap Into Zero Knowledge: A ZkForge Bootcamp Journey

Advent of Rust 2024: Day 2—References in Rust 🦀

Advent of Rust 2024: Day 1 - Rust's Ownership🦀