Video Encryption
& Delivery Logic
Beyond content protection: An engineering deep-dive into Asymmetric RSA, Dynamic Key Rotation, and Forensic Watermarking.
Core Cryptographic Standards
AES-256 GCM
The industry standard for high-performance payload encryption. Advanced Encryption Standard (AES) ensures that individual video segments (TS/fMP4) are unreadable without the specific 256-bit key.
RSA Handshaking
RSA is utilized for secure key exchange. By using a Public Key to encrypt the AES session key, we ensure that only the client’s Private Key can unlock the stream, preventing “Man-in-the-Middle” key theft.
HLS & Key Rotation
Dynamic security for live streams. We rotate AES keys every 10 minutes (or every N segments), ensuring that if one key is leaked, the breach is limited to a tiny window of content.
#EXT-X-KEY:METHOD=AES-128
FairPlay Streaming
Exclusive to the Apple ecosystem. Uses a hardware-backed Secure Enclave to handle decryption, making it virtually impossible to capture screen data on iOS or Apple TV.
FPS_Key_Security: Hardware
Widevine Modular
Multi-level protection (L1, L2, L3) for Android and Web. L1 security requires TEE (Trusted Execution Environment) for 4K content decryption.
Widevine_L1: TEE_Required
Protocol Architecture
Ingestion & Encryption
Video is ingested and immediately transcoded into segments. During transcoding, each chunk is encrypted using AES-256 via a Secure KMS.
Token-Based Licensing
Users authenticate via MFA to receive a short-lived, signed JWT. This token is required to request the decryption key from the license server.
Forensic Tracking
Invisible watermarks containing the user’s ID are embedded at the CDN edge. Any pirated recording can be traced back to the specific source device.