DCP-KDM System
A complete DCP Key Delivery Message generator built for securely encrypting keys using projector certificates.
Timeline
2025
Role
Full-Stack Developer
Status
completed
Technology Stack
JavaCrypto + XML handling
Crypto + XML handling
Spring BootBackend framework
Backend framework
ReactFrontend UI layer
Frontend UI layer
TailwindCSSStyling system
Styling system
DockerContainerized deployment
Containerized deployment
BouncyCastleCryptography library
Cryptography library
Key Challenges
- • Parsing projector X.509 certificates
- • AES/RSA hybrid encryption process
- • Generating valid KDM XML structures
Key Learnings
- • Understanding PKI and certificates
- • AES key wrapping with RSA
- • Building secure XML-based workflows
Overview
A complete DCP Key Delivery Message system that encrypts AES content keys using projector certificates. This project demonstrates advanced cryptographic techniques and XML manipulation in a real-world cinema context.
What It Can Do
- Upload Digest XML: Parse and validate Digital Cinema Package digest files
- Upload Projector Certificate: Handle X.509 certificates for secure key exchange
- Encrypt AES key using RSA public key: Implement hybrid encryption for content protection
- Generate KDM XML: Create properly formatted Key Delivery Messages
- Simulates real cinema workflow: End-to-end DCP security implementation
Why I Built This
To understand real-world cryptography and DCP workflows used in theaters. This project explores the intersection of digital rights management, public key infrastructure, and cinema technology standards.