Criptografía Jobs

recuperación forense de datos Android (WhatsApp) Busco un profesional con experiencia real en recuperación de datos a bajo nivel para un caso técnico específico en Android. Este proyecto requiere conocimientos avanzados, no soluciones básicas. Descripción del problema Se necesita recuperar un archivo de copia de seguridad local de WhatsApp ("") que fue eliminado del almacenamiento interno del dispositivo. - No disponible en papelera - Sin copia en Google Drive - Probable sistema de archivos: EXT4 o F2FS Alcance del trabajo - Análisis de almacenamiento a nivel de bloque - Extracción de datos desde sectores libres (file carving) - Identificación y reconstrucción de fragmentos de bases de datos SQLite - Posib...

Quero ter um chat para Android que garanta privacidade total entre dois usuários, rodando exclusivamente no meu servidor próprio. A ideia não é criar tudo do zero: posso aceitar código-base existente (como os repositórios que referenciei), desde que seja adaptado para ficar realmente seguro. Escopo desejado • Mensagens de texto em tempo real entre pares. • Compartilhamento de arquivos (imagens, PDFs e pequenos vídeos). • Sala protegida por senha única: só quem receber o convite e digitar a senha consegue entrar. • Tráfego ponta-a-ponta criptografado; nada em texto claro, nem em trânsito nem em repouso. • Backend instalável no meu servidor (PHP + MySQL, mas aceito outras stac...

The project is already done. It is multifactor voiceprint, password and finger print security system and stuff. I just have questions regarding it. You need to speak Arabic cuz some files are in Arabic

I am extending the Zcash wallet and need a Rust engineer with a solid cryptography background to build a brand-new feature directly in the wallet layer. The task is entirely on the application side—no consensus-level changes—so a deep understanding of the existing wallet codebase, its RPC interfaces, and shielded transaction handling is essential. What I expect you to handle • Analyse the current wallet module and propose the most appropriate architectural spot for the new logic. • Implement the feature in idiomatic Rust, following the project’s formatting and linting guidelines. • Write unit and integration tests that prove correctness and security. • Update or create accompanying documentation so future contributors can maintain the code eas...

We are looking for an experienced developer to integrate Kuwait Mobile ID (PACI) authentication and digital signature services into our web and mobile applications (Magento 2 + APIs). The integration must follow the official PACI SDK and support secure identity verification, authentication, and digital signing workflows. Scope of Work The developer will implement full integration using PACI Mobile ID SDK, including: 1. Authentication Integration QR Code Authentication (Web login) URL Scheme Authentication (Mobile apps) Push Notification Authentication ➡️ User approves via Mobile ID App (PIN-based authorization) 2. Digital Signature Integration Implement document/data signing flow Generate hash → send to PACI → receive signed response Validate signature securely 3. Identity ...

We are seeking a detail-oriented English Translation and Marketing Specialist to support the development and refinement of content for a global audience. This role requires not only accurate translation into clear, fluent English, but also the ability to adapt messaging to align with marketing objectives and audience engagement standards. Responsibilities include enhancing website content, emails, and social media materials to ensure consistency in tone, clarity, and overall effectiveness. We particularly welcome applications from university students and recent graduates (within 1–2 years of completing secondary or higher education) who have the availability to contribute consistently. Candidates based in Europe, the Americas, and Asia are strongly encouraged to apply. The ideal ca...

IOs and Andriod app version The app and database need to be safe from cyber-attacks. Input data to be split and saved to different providers. All encrypted with a random key. The app does not track the user or stores the IP address. If appropriate IP spoofing, device spoofing, Onion, TOR, Linus OS. Whatever ensure best security but does not affect performance too much. Accept payments in crypto and gift cards - as anonymous as possible Accept payments from bank accounts Partner website to the app also with the same security requirements Security and developer confidentiality is essential as this is a whistleblower app and the users need to be protected.

I need a compact PHP module that can be dropped into both my web and mobile back-ends. When a user triggers an OTP request, the script should: • check our MySQL user table to confirm the sender is registered and active • create a time-bound, cryptographically secure numeric OTP • log the request (user ID, channel, timestamp, IP) • send the code simultaneously by SMS and Email, using gateways I can configure (Twilio and Mailgun are what I use today, but leave the classes abstract so I can swap providers later) Please expose one clean function—requestOtp($usernameOrPhone)—that returns a JSON response with success / failure messages the apps can consume. OTP validity, retry limits, and error handling should be configurable at the top of the script. Acc...

Sertifikali hackerlik. Veri guvenligi veri sizma testi sistem guvenilirlik testleri