- Guards against buffer overflows in key subsystems
Main Tradeoffs:
1. Performance Impact:
- 3-5% overhead for memory operations
- 7-9% overhead for filesystem operations
- Additional storage needed for proof chains
- Increased memory usage for verification structures
2. Complexity:
- More complex memory management
- Additional failure modes to handle
- Higher system initialization overhead
- More complex recovery procedures
Attack Vectors Still Present:
- Physical hardware attacks (DMA, cold boot)
- Side-channel attacks
- Race conditions (though reduced by verification)
- Attacks that operate within valid operation boundaries
- Core CPU/firmware-level vulnerabilities
Attack Vectors Prevented/Mitigated:
- Memory corruption exploits
- Filesystem integrity attacks
- Unauthorized state transitions
- Historical state tampering
- Many types of privilege escalation
Im actively working on making the other attack vectors disappear as a whole. It's quite extensive as it is, so it's got a lot of things packed on it. ( * ´ ω ｀ * )
jgiraldo29|1 year ago
Key Security Benefits:
1. Cryptographic Verification:
- Prevents silent corruption of system state
- Makes tampering with system logs cryptographically difficult
- Provides verifiable audit trails of all system operations
- Enables detection of hardware memory faults
2. Runtime Integrity:
- Prevents invalid memory access patterns
- Ensures filesystem operations maintain consistency
- Verifies process state transitions
- Guards against buffer overflows in key subsystems
Main Tradeoffs:
1. Performance Impact: - 3-5% overhead for memory operations
- 7-9% overhead for filesystem operations
- Additional storage needed for proof chains
- Increased memory usage for verification structures
2. Complexity: - More complex memory management
- Additional failure modes to handle
- Higher system initialization overhead
- More complex recovery procedures
Attack Vectors Still Present:
- Physical hardware attacks (DMA, cold boot)
- Side-channel attacks
- Race conditions (though reduced by verification)
- Attacks that operate within valid operation boundaries
- Core CPU/firmware-level vulnerabilities
Attack Vectors Prevented/Mitigated:
- Memory corruption exploits
- Filesystem integrity attacks
- Unauthorized state transitions
- Historical state tampering
- Many types of privilege escalation
Im actively working on making the other attack vectors disappear as a whole. It's quite extensive as it is, so it's got a lot of things packed on it. ( * ´ ω ｀ * )