ECMR algorithm for encryption in browser

[clauderobi]

I am using tang / clevis and able to replicate the the encryption operation of clevis using this jose library. But only in a node JS context. My need is actually for a browser context where the ECMR is not recognized (or implemented).

I suspect it is possible to perform the ECMR procedure manually and I tried bit the resulting JWE does not work with the desktop clevis client. So I am doing something wrong. I simply specified ECDH-ES for the encryption key and replaced alg back to ECMR in the returned JWE (was not expecting it to work though...). Any suggestion?

[panva]

ECMR is not a recognized Algorithm Identifier in any runtime, node or browser. It is not registered and therefore as far as i'm concerned, non existant.

If there are tools with proprietary algorithms then use those.

[panva]

ECMR is not a recognized algorithm by this very project.

[clauderobi]

Interesting,...
but yet using ECMR with the nodeJS runtime worked.

Scary.

[panva]

but yet using ECMR with the nodeJS runtime worked.

Fairly certain it didn't. If the identifier is not recognized, it cannot be neither produced nor consumed by tis project.

Please provide an example.

[clauderobi]

What you describes is exactly what happens when running in a browser, which is my real target. For dev purpose I ran it in nodeJs first and successfully created a working JWE (using tang as a public key provider for the purpose of key exchange).

After moving to testing with a browser and seeing that it did not work I played with ECDH-ES instead but that broke the tang protocol and then did a few other attempts. In the end I gave up and went the wasm way. Unfortunately, I did not keep the code that was working under nodeJS. If you really really want it I could recreate.

I have a question; who is not recognizing the identifier? This project's code or something in the run time environment?

[panva]

who is not recognizing the identifier? This project's code or something in the run time environment?

The project. I only strive to implement registered identifiers.

Unfortunately, I did not keep the code that was working under nodeJS. If you really really want it I could recreate.

Please. I can't see a way that you would be able to use the ECMR identifier using this project's module in any runtime.