lokinet/contrib/py/pylokinet/pylokinet/rc.py

31 lines
709 B
Python

from pylokinet import bencode
import pysodium
import binascii
import time
def _expired(ts, lifetime=84600000):
"""
return True if a timestamp is considered expired
lifetime is default 23.5 hours
"""
return (int(time.time()) * 1000) - ts >= lifetime
def validate(data):
rc = bencode.bdecode(data)
if b'z' not in rc or b'k' not in rc:
return False
sig = rc[b'z']
rc[b'z'] = b'\x00' * 64
buf = bencode.bencode(rc)
try:
k = rc[b'k']
pysodium.crypto_sign_verify_detached(sig, buf, k)
except:
return False
else:
return not _expired(rc[b't'])
def get_pubkey(data):
rc = bencode.bdecode(data)
if b'k' in rc:
return binascii.hexlify(rc[b'k']).decode('ascii')