Igor Minar 4c30aa8343 docs(dev-infra): update .circleci/README.md (#37212)
The info about the pw storage is out of date.

We should really just point the reader to a go link, something like go/angular/passwords and keep
the info about secrets there.

PR Close #37212
2020-05-20 09:40:51 -07:00

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Markdown

# Encryption
Based on https://github.com/circleci/encrypted-files
In the CircleCI web UI, we have a secret variable called `KEY`
https://circleci.com/gh/angular/angular/edit#env-vars
which is only exposed to non-fork builds
(see "Pass secrets to builds from forked pull requests" under
https://circleci.com/gh/angular/angular/edit#advanced-settings)
We use this as a symmetric AES encryption key to encrypt tokens like
a GitHub token that enables publishing snapshots.
To create the github_token file, we take this approach:
- Find the angular-builds:token in the internal pw database
- Go inside the CircleCI default docker image so you use the same version of openssl as we will at runtime: `docker run --rm -it circleci/node:10.12`
- echo "https://[token]:@github.com" > credentials
- openssl aes-256-cbc -e -in credentials -out .circleci/github_token -k $KEY
- If needed, base64-encode the result so you can copy-paste it out of docker: `base64 github_token`