Add Signature header support.

[lizheming]

As specification said, It also support header named Signature and there has no scheme in field value.

The sender is expected to transmit a header (as defined in RFC 7230, Section 3.2) where the "field-name" is "Signature", and the "field-value" contains one or more "auth-param"s (as defined in RFC 7235, Section 4.1) where the "auth-param" parameters meet the requirements listed in Section 2: The Components of a Signature.
via: https://tools.ietf.org/id/draft-cavage-http-signatures-10.html#sig-header

Both parser and signer should be update to support signature header. I have different logic in parser.js and signer.js.

About sign generator part, we only need to add support for Signature header if developer set in options, because the format is different with Authorization header (just omit scheme part).

While we'll use this module to parser http request from different service, we should have max compatibility in parser part. So I will try to get authorizationHeaderName which developer set, then try to get authorization header, at last I'll try to get signature header.

close #77 when pr merged.

[aldex32]

Hello,

any plan to merge this PR?

Thanks,
Aldo

[aldex32]

@jclulow any idea? ☝️

[mattzuba]

I'm currently building a drone.io plugin where the drone server sends the signature header over, so support for this would be desirable. Would love to see feedback on this and potential merging.

[lizheming]

@mattzuba I have met this problem in the same scene, so I created the pr. Right now we can overwrite authorization header to fit it, just like https://github.com/lizheming/drone-js-config/blob/a43c559662ab7f46299849eff5660205bcf059f2/src/logic/index.js#L4-L12.

@arekinath can you have a look this pull request and merge it? thx~

[fmartinou]

Hello,
Any news?

Do we have a chance to see this PR merged in the near future?
All french Banks rely on this specification for their new APIs (https://www.stet.eu/en/psd2/) so this support would be really appreciated.

[kusor]

Hello,
Any news?

Do we have a chance to see this PR merged in the near future?
All french Banks rely on this specification for their new APIs (https://www.stet.eu/en/psd2/) so this support would be really appreciated.

Done. Hope this help addressing PSD2 issues.