rpivo

Encrypting & Decrypting Sensitive Data With the Web Crypto API

Chris Veness created a really great gist that shares code to encrypt and decrypt data using the Web Crypto API here.

This gist breaks down the code in that gist step by step, detailing a real-world scenario with actual data.

It might be helpful to have that gist open in another tab and use this gist to walk through each line of code.

One interesting use case for this would be to encrypt on a client, and then decrypt in the cloud with something like a Lambda function. In order to do this, you could use Node's latest version as of this gist, version 15, which includes a webcrypto module that's designed to be a Node implementation of the Web Crypto API. Lambdas can't use v15 by default -- however, you can create a custom Lambda layer that contains v15.

darconeous

Tesla Key Card Protocol

Researched by Robert Quattlebaum darco@deepdarc.com.

Last updated 2020-02-03.

CrookedNumber

Removing the last commit

To remove the last commit from git, you can simply run git reset --hard HEAD^ If you are removing multiple commits from the top, you can run git reset --hard HEAD~2 to remove the last two commits. You can increase the number to remove even more commits.

If you want to "uncommit" the commits, but keep the changes around for reworking, remove the "--hard": git reset HEAD^ which will evict the commits from the branch and from the index, but leave the working tree around.

If you want to save the commits on a new branch name, then run git branch newbranchname before doing the git reset.