Support for HMAC

[davgonca]

Hi,

Is it possible to implement the support for HMAC encryption ?

Thanks

[svyatogor]

Would love to see it!

[ikamman]

Yes, please add support for hmac

[jedschneider]

Same here!

[jedschneider]

With a little direction I'd be willing to provide a PR. Probably the biggest concern would be having access to an openssl implementation in order to do the signature. Is that something a VSCode plugin or VSCode itself can provide?

[AnWeber]

@jedschneider Is there a standard mechanism for HMAC? I thought it is individual which values are used in the hash calculation. For example, AWS authentication is also based on HMAC and uses its own generation of how the header and payload are used.
For the reason I think this would make the most sense to do directly with NodeJS support. Maybe take a quick look at #674