md5加密

def verify_user(user_id, session_id, timestamp, token):
    if abs(int(time.time())-int(timestamp)) > 60:
        return False
    m1 = hashlib.md5()
    m1.update(str(user_id).encode('utf8'))
    hashcode1 = m1.hexdigest()[8:-8]

    m2 = hashlib.md5()
    m2.update(str(session_id).encode('utf8'))
    hashcode2 = m2.hexdigest()[8:-8]

    m3 = hashlib.md5()
    m3.update(str(timestamp).encode('utf8'))
    hashcode3 = m3.hexdigest()[8:-8]

    hashcode = hashcode1[:8] + hashcode2[8:16] + hashcode3[-8:]

    if hashcode == token:
        return True
    else:
        return False