Cyberchef: Feature Request: Can you add one time password generation TOTP and HOTP

[RobertMcCausland]

Great tool.

Any chance you could add event and time based one time password generation

[mattnotmitt]

I'll take a shot at this soon.

[de27309b]

Here is an example of implementation in javascript of TOTP as defined in RFC6238 and used in Google Authenticator-like applications. (license CC-0, except for libraries).

HOTP is the same except the step is defined by a counter maintained by both token and server rather than time.

Hope it can help to include this in Cyberchef.

TOTP_demo.zip