Module integrity 

Structural Integrity — Zero-trust module self-checksumming.

Replaces coreason_runtime/execution_plane/integrity.py.

Enforces the zero-trust structural integrity of the runtime by providing self-checksumming capabilities. Mathematically hashes source content at runtime to detect “Fork-and-Patch” attacks where critical cryptographic components (like the license verifier) might have been tampered with.

Zero Waste: SHA-256 delegated to sha2 (MIT/Apache-2.0). Ed25519 signature verification delegated to ed25519-dalek (BSD-3-Clause). Memory-mapped file I/O delegated to memmap2 (MIT/Apache-2.0). Thread-safe caching delegated to dashmap (MIT).

Structs

IntegrityViolationError

Raised when structural integrity verification fails.

Functions

assert_module_integrity

Full module integrity check with caching.

check_cache

Check if a module has already been verified (cache hit).

clear_cache

Clear the entire verification cache.

update_cache

Store a successful verification result in the cache.

verify_file_hash

Verify a file’s SHA-256 hash using memory-mapped I/O.

verify_module_integrity

Verify source code integrity via SHA-256 checksum.

verify_signature

Verify an Ed25519 signature over a message.