4 ms·

You can also roll your own with https://github.com/pyauth/pyotp https://github.com/pyauth/pyotp

• codetrotter 5y ago
  > roll your own Libraries for a couple of other languages: https://crates.io/search?q=4226 https://crates.io/search?q=4226 https://pkg.go.dev/search?q=4226 https://pkg.go.dev/search?q=4226
• tyingq 5y ago
  It's almost overkill to bother with a library. #!/usr/bin/env python3 import time, hmac, base64, struct def totp(seed,curtime,period,len): k = base64.b32decode(seed) mac = hmac.new(k, struct.pack('>Q', int(curtime/period)), 'sha1').digest() offset=mac[-1] & 0x0f otp=struct.unpack('>L', mac[offset:offset+4])[0] & 0x7fffffff return str(otp)[-len:].zfill(len) myseed='KRUGS4ZANFZSAYJAOJQW4ZDPNUQHG5DS' # use gpg or similar to store print(totp(myseed,time.time(),60,6))
  • jjnoakes 5y ago
    True, I also type this in from memory whenever I need a quick TOTP calculation.
    • tyingq 5y ago
      Meaning the core TOTP piece isn't much code, and a library might not store/encrypt the seed, display the data, etc, in a way that you want. The bulk of the code for an authenticator app isn't typically the TOTP bit.
      • pennaMan 5y ago
        You forgot to add the test cases :)