fork download
copy 
  1. import httplib
  2. import hmac
  3. import hashlib
  4. import time
  5. import sys
  6. import struct
  7. import json
  8.  
  9. root = "http://h...content-available-to-author-only...t.com/challenge/003/endpoint"
  10. content_type = "application/json"
  11. userid = "rishabhaggarwal005@gmail.com"
  12. secret_suffix = "HDECHALLENGE003"
  13. shared_secret = userid+secret_suffix
  14.  
  15. timestep = 30
  16. T0 = 0
  17.  
  18. def HOTP(K, C, digits=10):
  19.      K_bytes = str.encode(K)
  20.      C_bytes = struct.pack(">Q", C)
  21.      hmac_sha512 = hmac.new(key = K_bytes, msg=C_bytes, digestmod=hashlib.sha512).hexdigest()
  22.      return Truncate(hmac_sha512)[-digits:]
  23.  
  24. def Truncate(hmac_sha512):
  25.      offset = int(hmac_sha512[-1], 16)
  26.      binary = int(hmac_sha512[(offset *2):((offset*2)+8)], 16) & 0x7FFFFFFF
  27.      return str(binary)
  28.  
  29. def TOTP(K, digits=10, timeref = 0, timestep = 30):
  30.      C = int ( time.time() - timeref ) // timestep
  31.      return HOTP(K, C, digits = digits)
  32.  
  33. passwd = TOTP(shared_secret, 10, T0, timestep) 
  34. passwd = TOTP(shared_secret, 10, T0, timestep).zfill(10) 
  35.  
  36. print(passwd)
Success #stdin #stdout 0.08s 69008KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1728710766
https://ideone.com/MrN2Pa
language:
Python (PyPy 2.7.13)
created:
13 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!