Declarative blockchain security: The @master_audit and @slave_verify decorators.

Day 10 of the wFabricSecurity Open-Source Engineering Series.

Don't clutter your business logic with 30 lines of cryptographic validation code. wFabricSecurity @master_audit and @slave_verify decorators turn security into a single declarative line.

The Pain Points We Faced

Writing 30 lines of signature verification try/except logic inside every worker function
Developers forgetting to verify incoming task signatures before executing business logic
Inconsistent audit logging between master dispatchers and slave execution nodes

The Implementation

from wFabricSecurity.security import slave_verify, master_audit

# Worker function automatically verifies incoming envelope signature & permissions
@slave_verify(security_context)
def process_data_task(task_payload):
    # Executes ONLY if signature and permissions are valid!
    return compute_heavy_analytics(task_payload)

# Dispatcher function automatically signs and audits task
@master_audit(security_context)
def dispatch_task(data):
    return data

Why This Architecture Wins

Slave Guard: Automatically verifies sender signature and permissions before function runs.
Master Guard: Automatically signs outgoing payload and records audit trail.
Zero Boilerplate: Eliminates repetitive validation scaffolding across your codebase.

Verification & Status

Tested and verified against Hyperledger Fabric environments. Compatible with Python 3.10+ with cryptographic identity management, code integrity hashing, and token-bucket rate limiting.

GitHub: https://github.com/wisrovi/wFabricSecurity
PyPI: https://pypi.org/project/wFabricSecurity