Dynamic Encryption Key Indexing for Terminal Server Sessions

The patent implements dynamic key selection during session connection. Instead of using a fixed static key, the system randomly selects keys from a pre-shared pool of multiple keys between terminal and server. This dynamic approach prevents static key cracking while maintaining encryption efficiency through optimized key management and selection mechanisms.

The patent changes the encryption parameter from a single static key to multiple keys with different weights. The system maintains a pool of keys with varying probability weights, allowing random selection based on these weights. This parameter change enables both efficient encryption operations and enhanced security through key diversity and unpredictability.

The patent segments the key management system into distinct components: a key pool containing multiple encryption keys, weight assignments for each key, and an index-based selection mechanism. This segmentation allows independent management of key storage, weight configuration, and random selection processes, reducing overall system complexity while enabling dynamic key updates.

The patent uses index-based access to reference keys in the key pool without duplicating the actual key material. Instead of storing multiple copies of keys, the system maintains lightweight index references that point to keys in the shared pool. This copying approach reduces memory overhead and simplifies key management while maintaining security through indirect access.