Remarks

The WebCrypto APIs are usually only available on “secure” origins, meaning that the document must have been loaded over HTTPS or from the local machine (from localhost, file:, or a browser extension).

These APIs are specified by the W3C Web Cryptography API Candidate Recommendation.

Creating digests e.g. SHA-256

Cryptographically random data

Generating RSA key pair and converting to PEM format

Converting PEM key pair to CryptoKey