escher-auth
Library for HTTP request signing (JavaScript implementation)
activitypub-http-signatures
A library for creating, parsing, and verifying HTTP signature headers, as per the [Signing HTTP Messages draft 80](https://datatracker.ietf.org/doc/html/draft-cavage-http-signatures-08) specification.
fedi-get-key
A library for fetching the public key from an activitypub actor, for use in fediverse applications.
aws-opensearch-connector
A tiny Amazon Signature Version 4 connection class for @opensearch-project/opensearch, for compatibility with AWS `opensearch` and IAM authentication.