
Securing LLM Apps Against Prompt Injection
A Permission-Based Defense Using Encrypted Prompts
This research introduces Encrypted Prompt, a novel security mechanism that embeds permission data within user prompts to prevent unauthorized actions in LLM applications.
- Appends encrypted permission information to each user prompt
- Verifies permissions before executing any LLM-generated actions (like API calls)
- Provides stronger security guarantees than detection-only approaches
- Creates a verifiable security barrier between user input and system actions
This innovation matters because it shifts from merely detecting attacks to actively preventing unauthorized actions, creating more robust and trustworthy LLM-powered applications for enterprise use.
Encrypted Prompt: Securing LLM Applications Against Unauthorized Actions