Cryptography projects — HireLancer archive

ID / Date Listing

Comprehensive Cryptocurrency & Token Development -- 2

I am ready to move forward with the full-scale development of a brand-new cryptocurrency, and I need a partner who can own the technical build from concept to l...

HL-40086974

Digital Currency Source Code Needed

Please do not apply if you want a huge upfront fee. Please do not apply if you want a huge upfront fee. Please do not apply if you want a huge upfront fee. Plea...

HL-40085953

Casilla Electronica customizada. Usando MailCow y Roundcube.

según se define en documento adjunto

HL-40083553

Fix USDC Transaction Hash Issue

I'm facing an issue with a USDC transaction. The funds are not reaching the designated address due to a hash problem. Transaction details: - Type: Cryptocurrenc...

HL-40079780

APK Decompilation for Authentication Analysis

I have an Android APK whose login routine I need to understand in detail. The original source code is no longer available, so the only way forward is to reverse...

HL-40074891

Comprehensive Cryptocurrency & Token Development

I am ready to move forward with the full-scale development of a brand-new cryptocurrency, and I need a partner who can own the technical build from concept to l...

HL-40072735

Web App Encryption Vulnerability Audit

Our in-house web applications handle sensitive records, and their data-encryption flow is the single most critical layer I want tested. The goal is straightforw...

HL-40069970

Linux & WHMCS Security Audit

I need a seasoned penetration tester who knows Linux inside-out and understands WHMCS whmcs.com system at the source-code level to carry out a full security aud...

HL-40069419

Firma masiva PDF en un arbol de directorio.

Necesito firmar por lotes un gran volumen de informes internos que ya están finalizados como archivos PDF. Todas las firmas deben aplicarse con mi token de hard...

HL-40068976

Multiple PDF Digital Signature and Timestamp Application

The proposed project concerns the development of a desktop application that enables end users to apply qualified digital signatures and secure timestamps to one...

HL-40068274

Aadhaar Secure QR Code Integration (Android + Web)

Job Description We are looking for a developer to create and integrate Aadhaar Secure QR Code decoding and verification into both an Android app and a Web app....

HL-40067974

WeChat .db Decryption

I need help decrypting WeChat .db files, which are in encrypted SQLite format. The encryption is done using AES-256. Requirements: - Expertise in AES-256 encryp...

HL-40066480

Multiple PDF Digital Signature and Timestamp Application

The proposed project concerns the development of a desktop application that enables end users to apply qualified digital signatures and secure timestamps to one...

HL-40062465

Bitcoin Book Technical Fact-Checker

I have a near-final manuscript that dives deep into Bitcoin’s underlying protocols and their real-world economic implications, and I need a sharp technical eye...

HL-40059086

Criador de Shellcode Seguro e Evasivo

Preciso de um carregador em shellcode, direcionado ao Windows, capaz de manter toda a operação exclusivamente na memória: ele deve aceitar uma DLL previamente c...

HL-40056865

Develop an Application for JSON Data Encryption and Decryption

I need an application to encrypt and decrypt data in JSON format using my provided algorithm. The application should be efficient, user-friendly, and capable of...

HL-40056917

Advanced Application Security Training

• Extensive experience in application security, with a focus on secure software development practices and techniques. • Strong understanding of web application...

HL-40055508

Bitcoin Recovery via Seed Phrase

I still have the full, correct 24-word recovery phrase for a Bitcoin wallet that was originally created on an online exchange, yet I no longer have any way to s...

HL-40054500

Applied Cryptography Portfolio & Code

I have to submit a 3,000-word portfolio that demonstrates how cryptography is used in real-world applications, and I need it back within 10 hours. The written p...

HL-40052958

ASP-C# X.509 Document Signing

I have an ASP.NET (C#) Web API that generates PDF and XML documents which must leave the server already signed with an X.509 certificate issued by our own inter...

HL-40052218

Private Ledger Audit Trail System

Project Overview We are building a private, tamper-evident event ledger for a distributed system. The ledger will record lifecycle events, versioned assets, ver...

HL-40049249

Blockchain + AES-256 + IPFS + React.js Healthcare Data App or website

Project overview I need a full, ready-to-deploy web application that implements my academic project: “Leveraging Blockchain and AES for Trusted and Confidential...

HL-40045735

EMV Power Side-Channel Analysis

We are looking for a Machine Learning expert with proven experience in Side-Channel Analysis (SCA) to help build a full ML pipeline capable of extracting sensit...

HL-40043417

Crypto Asset Risk Platform Development

I need a software architect to help me design a robust platform for cryptographic asset discovery and cybersecurity risk analysis. It should cater to tokens, di...

HL-40042929

Crypto Account Advisor

I'm looking for an expert to help me understand my crypto account and the blockchain. Key areas I need assistance with: - Reading and interpreting transaction h...

HL-40042654

Wallet drainer (TrustWallet and Metamask)

I need wallet drainer (TrustWallet and Metamask).

HL-40041525

Reverse Engineer Android Crypto IDs

I need a seasoned Android reverse engineer to dig into my own application and show, step by step, how its drm_id, x-cit, x-sig, the full Client Attestation stri...

HL-40041186

Java XML Signature Implementation (CLI is fine)

I already have the unsigned XML, a valid X.509 certificate with its private key, the full specification, and the link to the government-run verification portal....

HL-40040262

Chip Receiver 7252 Decryption

I’ve extracted an encrypted text file from a receiver chip model 7252 that contains personal information I need to recover. The goal is straightforward: break t...

HL-40038885

Immediate J2EE Integration & Deployment

I need a hands-on J2EE developer who can work full-time with me from 8–12 December to wrap up an HSM-backed Java integration. You will work closely with our in-...

HL-40033683

Build Solana-Like Blockchain Ecosystem

I need an expert blockchain developer/team to build a full Layer-1 blockchain (similar to Solana/Polkadot), including: Custom high-performance chain (PoS / PoH...

HL-40028569

Resolve False Antivirus Alerts in .NET Software EXE Protection & Encryption

Project Title: Need .NET Developer to Fix False Antivirus/SmartScreen Detection (EXE Protection & Encryption) Project Description: I have a .NET software that I...

HL-40028290

Full Python Development of a Novel Block Cipher

We are seeking a specialist with a strong background in designing and analyzing symmetric block ciphers to collaborate on a research-oriented project focused on...

HL-40028357

Custom .NET EXE Encryption/Obfuscation System Development( Crypter )

Project Title: Need Expert .NET Developer for Custom EXE Encryption / Obfuscation System Project Description: I am looking for a high-level .NET developer who h...

HL-40026807

Unpack Protected 64-bit EXE

I have a 64-bit Windows executable (~14 MB, digitally signed, admin-level) that I am studying for an academic -analysis course. Detect It Easy flags it as “Gene...

HL-40024871

CTF Private Tutoring

我计划开始参加在线 CTF 竞赛，但目前还只是初学者。为了确保学习方向正确、进度连贯，我想通过一对一辅导系统掌握 Web 安全、逆向工程以及密码学这三大常见赛题方向。课...

HL-40021328

Looking Fast HasHs calculation

I Have SHA1 HasH that I need converted back into its only quickly. and calculate info from HasH you will get from SHA1

HL-40018354

Sign pdf with digital signature using C#

Hi, I am searching for .net developer that has managed to sign pdf with digital signature to help me to complete this task. i am using c# and Org.BouncyCastle.P...

HL-40018092

BSC Transaction Token Development

I am ready to launch a straightforward cryptocurrency for everyday transactions and need a clean BEP-20 smart contract on Binance Smart Chain to make it happen....

HL-40015427

Quantum Security Specialist Needed

Quantum Machine Node Penetration Tester Position Overview We are seeking an experienced Penetration Tester specializing in quantum computing infrastructure and...