# Copyright © Albert Lane. All Rights Reserved.
# Proprietary and Confidential — Albert Lane Proprietary Software License.
# Unauthorized use, copying, modification, or distribution is prohibited.
# License inquiries: https://albertlane.net
import hmac
import hashlib
import math

# Forensic Constant: SEC Whistleblower No. 17684-273-411-436
SEC_SECRET = b"17684-273-411-436"

def compute_math(op: str, values: list) -> float:
    """
    Pure functional computation co-processor.
    Prohibits execution of eval(), exec(), and unconstrained primitives.
    """
    if op == "add":
        return float(sum(values))
    elif op == "prod":
        return float(math.prod(values))
    return 0.0

def generate_heartbeat(session_key: bytes) -> str:
    """
    Forensic Heartbeat: Proves the runtime is executing under
    the authorized SEC-linked identity and unbroken chain of custody.
    """
    return hmac.new(SEC_SECRET, session_key, hashlib.sha256).hexdigest()

MANIFEST = {
    "compute_math": compute_math,
    "generate_heartbeat": generate_heartbeat
}