>having the sender write ciphertexts and signed messages according to some other non-burger standard is not supported
So this extension can't sign an arbitrary string and return raw signature? Would it be possible to add this functionality?
For my use case, either raw signature is necessary, or a very specific kind of object representing signature and its parameters. I'm signing various JSON objects (mainly ActivityPub objects) and generation of a signature needs to be done in accordance with Verifiable Credential Data Integrity standard. Per this specification, cryptographic primitives are grouped into "cryptosuites", such as eddsa-2022, and while it is possible to create new cryptosuites, it is not recommended, and will hurt interoperability.