key-block

Background

Originally this was built to anihilate replay attacks, by blocking the signatures of packages until the timestamp made it invalid. Then it seemed to make sense to make a generalized package out of it.

Even though the benefit is just 10 lines of code to be condensed to 2. Probably worth it ;-)

Usage

Requirements

• ESM importability

Installation

Current git version:

npm install git+https://github.com/JhonnyJason/key-block-output.git

Npm Registry

npm install key-block

Use

The main idea is to have a string key to be blocked for a certain amount of time. Thus we have the blockOrThrow function.

• The first time blockOrThrow will set the key as blocked
• For any further time when being called within the blockingTime blockOrThrow would throw an Error
• After the blockingTime has passed the key is automatically unblocked - ready to be blocked again :-)

import { setBlockingTimeMS, blockOrThrow, passOrThrow, isBlocked } from "key-block"

# setting the default  default is 10000ms
setBlockingTimeMS(300000)

isBlocked("hell") # false
passOrThrow("hell") # passes
blockOrThrow("hell") # all fine

isBlocked("hell") # true
passOrThrow("hell") # -> Error Exception "Key hell is blocked!"
blockOrThrow("hell") # -> Error Exception "Key hell is blocked!"

## after ~300000ms
isBlocked("hell") # false
passOrThrow("hell") # passes again
blockOrThrow("hell") # all fine again

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Further steps

• Waiting for ideas on improvement

All sorts of inputs are welcome, thanks!

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License

Unlicense JhonnyJason style