Cryptography projects — HireLancer archive

ID / Date Listing

HL-40204520

TRC20 Smart Contract Development

Hi, I’m building a blockchain/Web3 project and I’m looking for a skilled blockchain developer who can help design and build the project using blockchain technol...

HL-40200170

Real-Time Lottery App Development

I'm seeking an experienced app developer to create a real-time lottery application for iOS. The app features: - Live prize pot that updates instantly - Digital...

HL-40196149

Cryptocurrency Platform Development

I am looking for an experienced blockchain developer to create a new cryptocurrency platform with its own coin system and its own blockchain system Key requirem...

HL-40194259

BTC/ETH Mnemonic Balance Scanner

I need a high-performance Python application that runs natively on Windows and brute-derives 12-word BIP-39 mnemonic phrases, checks the resulting Bitcoin and E...

HL-40192112

CUDA Developer Needed – GPU-Accelerated Bitcoin WIF Key Recovery Tool (Verification Required) -- 2

Job Title: CUDA Developer Needed – GPU-Accelerated Bitcoin WIF Key Recovery Tool (Verification Required) Project Description: I am looking for an experienced CU...

HL-40189880

STM32 Firmware Developer – UART + DMA + AES Encryption UART(TX & RX)

Firmware (Base RTK): Responsible for encrypting RTCM data, communication via UART, and transmitting data via RTK radio. STM32 Firmware Developer – UART + DMA +...

HL-40181406

Windows DRM Licensing Module

I need a security-minded experienced and professional developer who can build a robust licensing subsystem for my commercial Windows application. The codebase m...

HL-40178543

WearOS Personal Audit Data Logger

Project Description: I am looking for an expert Android/WearOS developer for a fixed-price, one-time project. I need a custom background service for my Samsung...

HL-40177640

Decode Historical Encrypted Messages

I need help decoding a couple of encrypted messages using a standard dictionary code from 1927-1935. I have the messages and the solutions in two examples. Ther...

HL-40175557

IOS Application Developer to review logs

Job Description We are seeking an experienced iOS / mobile security analyst to perform a limited-scope technical review of iPhone trace logs and related telemet...

HL-40175397

Desencriptado de 500GB de Archivos

Tengo cerca de 500 GB repartidos en documentos de texto y colecciones de imágenes que quedaron encriptados. No dispongo de la clave ni conozco con certeza el al...

HL-40174085

Desarrollo de Software Windows para Lectura/Escritura de Tarjetas Inteligentes (Smart Cards)

Desarrollo de Software Windows para Lectura/Escritura de Tarjetas Inteligentes (Smart Cards) Busco un desarrollador con experiencia en C# (.NET) o C++ para crea...

HL-40165727

Chief Investment Management Officer XRP Crypto

We are seeking an experienced and visionary Chief Investment Officer (CIO) with deep expertise in quantitative crypto trading, XRP, and DeFi markets to help sca...

HL-40161579

Discord Token Generator & Verifier

The goal is to create a Python-based application that reliably generates new Discord tokens and validates existing ones in the same workflow. I need an intermed...

HL-40160857

Smart Luggage Firmware Developer Needed

I’m deep into a next-generation smart-luggage security product and now need another pair of expert hands in Delhi / NCR to push the firmware forward. The hardwa...

HL-40154182

Dev Sec ops Training

Looking for dev sec ops training

HL-40151542

Custom Cosmos Layer-1 Chain Build

I’m ready to commission a sovereign Layer-1 network built with the Cosmos SDK. The chain must revolve around a bespoke consensus module that mints a “Primary As...

HL-40148832

Blockchain-Native Autonomous Economic Agent

### Unique Type of AI Agent A distinctive type of AI agent that stands out from typical ones (like standard chatbots, virtual assistants, or simple automation b...

HL-40148083

Bitcoin USB Wallet Setup Help

I have just purchased a Bitcoin USB wallet and need it up and running right away. The device has never been initialized or has been settled online purchase into...

HL-40144437

SHA-1 Hash Help

Il progetto si intenderà concluso qualora sarà riproducibile la firma digitale associata ad un'etichetta in code39 da me fornita.

HL-40131785

Android Penetration Tester Needed

I’m ready to put my Android app through a real-world security workout and need a specialist who can think like an attacker yet report like an auditor. You will...

HL-40129810

Smart contract Deployment & Hosting

Summary THIS WORK ONLY INCLUDES SMART CONTRACT DEPLOYMENT AND HOSTING, NO ANY DEVELOPMENT WORK. START YOUR APPLICATION WITH "HOSTING MASTER" We are seeking an e...

HL-40126703

Decrypt OpenSSL Archive

I have an archive named “archive.tar.bz2” that was encrypted with OpenSSL using a passphrase I no longer possess. There are no password hints or partial phrases...

HL-40120061

Crypto Security App & Website Redesign

I keep a portion of my savings in cryptocurrency and need two things to safeguard and present it properly: 1) A dedicated security application The goal is a lig...

HL-40119095

AES Encryption for Web Data - 04/01/2026 10:52 EST

I need to integrate robust AES encryption into my current web application so every piece of personal data that moves through the platform is protected end-to-en...

HL-40110750

Healthcare App with Medical Record Scanner, ABHA Integration & Doctor Access

I’m designing Bionex, a cross-platform (iOS and Android) mobile application that lets patients scan, organise and share their medical records while retaining fu...

HL-40108388

iOS Forensics Access Investigation

I have an iPhone that may have been accessed without permission and I need a full forensic examination to understand exactly what happened. Your task is to acqu...

HL-40106831

Track Stolen Ethereum Wallet

Someone drained my Ethereum holdings and I need a skilled blockchain analyst to pinpoint the wallet(s) now controlling those funds. I can supply the compromised...

HL-40103249

Guard Kit Cybersecurity

Guard Kit is already a full-featured, PyQt5 desktop application that merges network security, web vulnerability testing, malware inspection, cryptography, and d...

HL-40102309

Hindi/English Typing Exam App Development

PROJECT TITLE Python + MySQL Desktop Typing Exam Software (Hindi DevLys & English) with Licensing --- PROJECT DESCRIPTION We are looking for an experienced Pyth...

HL-40101962

C/C++ Cryptography Expert Needed

This is an example of a record: Field No. 0: 0039008K Field No. 1: 1775674 Field No. 2: 2025080H Field No. 3: 3003715J Field No. 4: 4001 LJ/ Field No. 5: 5BX T...

HL-40099734

I need a mathematician and cryptography expert with extensive experience in encryption, decryption, and hashing. -- 2

I’m shaping a security-focused application and need a seasoned mathematician-cryptographer to guide every step of its protection layer. The work ranges from sel...

HL-40099163

Create Blue Star Blockchain

1. Core Design Goals CPU-only mining (ASIC/GPU resistant) Low entry barrier (runs on consumer hardware) Fair distribution (anti-bot & anti-farm measures) Energy...

HL-40095807

Custom Blockchain Upgrade Needed -- 3

As shown in the images below, reneewallet.com is a wallet + crypto payment project. Payments from other wallets were not reaching the wallets within the project...

HL-40095642

Custom Blockchain Upgrade Needed -- 2

. All processes for our project below are complete. To receive payments, the main networks (all available) need to be updated and connected. https://reneewallet...

HL-40095385

I need a mathematician and cryptography expert with extensive experience in encryption, decryption, and hashing.

I’m shaping a security-focused application and need a seasoned mathematician-cryptographer to guide every step of its protection layer. The work ranges from sel...

HL-40093707

Custom Blockchain Upgrade Needed

. All processes for our project below are complete. To receive payments, the main networks (all available) need to be updated and connected. https://reneewallet...

HL-40092654

Looking for expert developer in .NET Code Security Expert

Hi , Looking for .NET Code Security Expert is a professional specializing in building and auditing secure applications using Microsoft's .NET framework. Need to...

HL-40088545

Recover Forgotten ZIP Password

I have a password-protected ZIP archive that stores a microscope video recording I need for my day-to-day lab work. Unfortunately, I have no clue about the pass...

HL-40087972

Decriptazione Hash SHA-1 Troncato

Dispongo già dell’hash da analizzare: si tratta di un digest SHA-1 tagliato ai primi 80 bit e successivamente codificato in Base32Hex (16 caratteri). Desidero r...