it-crypto v0.0.4
IT-Crypto
This typescript module implements E2EE encryption functionality for the inverse transparency toolchain [1].
Development commands
Live compilation: tsc -w -p .
Execute Javascript code: node index.js
Test in browser
Compile package via browserify: npm run browser (this command generates bundle.js, which is imported in test.html).
Open a webserver within the local working directory python3 -m http.server 8001.
Finally open localhost:8001/test.html to execute code within the browser.
Key generation
Private Key
This command generates a PEM-file containing the pirvate key:
openssl ecparam -genkey -name prime256v1 -noout -out private.es256
This command takes the PEM-file and creates a PKCS8 file from it:
openssl pkcs8 -topk8 -nocrypt -in private.es256 -out private_pkcs8.es256
--> Use this with importPKCS8()
Private Key -> Public Key
openssl ec -in private.es256 -pubout -out public.es256
--> Use this with importPKCS8()
Private Key -> x509 certificate
The computed certificate also includes the corresponding public key. The certificate is self-signed with the private key.
openssl req -new -x509 -key private.es256 -out cert.pem -days 360
--> Use this with importx509()
References
[1] Zieglmeier, Valentin and Pretschner, Alexander (2021). Trustworthy transparency by design (2021). https://arxiv.org/pdf/2103.10769.pdf