from py_ecc.bn128 import G1, G2, pairing, add, multiply, FQ, FQ2
import hashlib
class ZKValidator:
def __init__(self):
self.trusted_setup = self.generate_trusted_setup() # Simplified
def generate_trusted_setup(self):
# Placeholder for zk-SNARK setup
return {"g1": G1, "g2": G2}
def prove_data_integrity(self, data, merkle_root):
"""Generate zk-proof for data matching Merkle root."""
# Simplified: Hash data and prove equality
data_hash = hashlib.sha256(json.dumps(data).encode()).hexdigest()
proof = {
"a": multiply(G1, int(data_hash, 16)),
"b": multiply(G2, int(merkle_root, 16)),
"c": add(multiply(G1, 1), multiply(G2, 1)) # Dummy pairing
}
return proof
def verify_proof(self, proof, public_input):
"""Verify zk-proof on-chain (simulate)."""
# Pairing check
left = pairing(proof["b"], proof["a"])
right = pairing(G2, proof["c"])
return left == right
# Example
validator = ZKValidator()
proof = validator.prove_data_integrity({"water": 1000}, "merkle_root_hash")
valid = validator.verify_proof(proof, "public_input")
print("ZK Proof Valid:", valid)
