How would one set a keyid (or other parameters) in the Signature-Input header?

[TurboEncabulator9000]

The signature parameters segment of Signature-Input is specified to support the following parameters:

• created
• expires
• nonce
• alg
• keyid
• tag

In the code (signature-base-helper.generateBase()), it seems that the created field is automatically appended, and there's no support for the other fields.

If I try to wrap the library like this...

    headers["Signature-Input"] = DigitalSignatureSDK.generateSignatureInput(
      headers,
      config,
    ) + `;keyid="some-key-id"`;

...I can append whatever I want. However, signature-helper.generateSignature() will then re-generate the base string using signature-base-helper.generateBase(), overwriting whatever I added to it previously, and sign that instead. Therefore, whatever I append myself to Signature-Input (like keyid) will not be represented in the signature, and will fail verification on the receiving endpoint.

It's possible to pass keyid in a separate header, but that seems messy. Is there a way to pass this in the Signature-Input header?

[LokeshRishi]

@TurboEncabulator9000 The x-ebay-signature-key header already contains the encrypted keyid. Could you please provide more information about your specific use case?

[TurboEncabulator9000]

For use with servers other than eBay. (I realize this may not be a very high priority for this project.)