JA4Plus is a go library for generating ja4+ fingerprints.

JA4Plus currently offers a single fingerprinting function:

• JA4: Fingerprint based on TLS ClientHello information.

Contributions are welcome for the other fingerprints in the family 😉

The JA4H hash, based on properties of the HTTP request, cannot currently be easily implemented in go, since it requires headers to be observed in the order sent by the client. See e.g.: https://go.dev/issue/24375

For example usage, checkou out examples_test.go.