[#HidingSigningProvider]
= HidingSigningProvider
:mrdocs:

Wraps a signing provider, optionally hiding secret keys and key origins.

== Synopsis

Declared in `<script/signingprovider.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class HidingSigningProvider
    : public xref:SigningProvider.adoc[SigningProvider]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:SigningProvider.adoc[SigningProvider]`
| An interface to be implemented by keystores that support signing.
|===

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:HidingSigningProvider/2constructor.adoc[`HidingSigningProvider`]         [.small]#[constructor]#
| Wrap a provider, choosing whether to hide secrets and origins.
| xref:HidingSigningProvider/DeleteMuSig2Session.adoc[`DeleteMuSig2Session`]  [.small]#[virtual]#
| Delete the state stored for a MuSig2 signing session.
| xref:HidingSigningProvider/GetAllMuSig2ParticipantPubkeys.adoc[`GetAllMuSig2ParticipantPubkeys`]  [.small]#[virtual]#
| Return all known MuSig2 aggregate pubkeys and their participants.
| xref:HidingSigningProvider/GetCScript.adoc[`GetCScript`]  [.small]#[virtual]#
| Look up a script by its script id.
| xref:HidingSigningProvider/GetKey-01.adoc[`GetKey`] 
| `GetKey` overloads
| xref:SigningProvider/GetKeyByXOnly.adoc[`GetKeyByXOnly`] 
| Look up a private key by any key id derived from an x‐only pubkey.
| xref:HidingSigningProvider/GetKeyOrigin.adoc[`GetKeyOrigin`]  [.small]#[virtual]#
| Look up key origin info, unless origins are hidden.
| xref:SigningProvider/GetKeyOriginByXOnly.adoc[`GetKeyOriginByXOnly`] 
| Look up key origin info by any key id derived from an x‐only pubkey.
| xref:HidingSigningProvider/GetMuSig2ParticipantPubkeys.adoc[`GetMuSig2ParticipantPubkeys`]  [.small]#[virtual]#
| Return the MuSig2 participant pubkeys for an aggregate pubkey.
| xref:HidingSigningProvider/GetMuSig2SecNonce.adoc[`GetMuSig2SecNonce`]  [.small]#[virtual]#
| Retrieve the MuSig2 secret nonce for a signing session.
| xref:HidingSigningProvider/GetPubKey-07.adoc[`GetPubKey`] 
| Look up a public key by its key id.
| xref:SigningProvider/GetPubKeyByXOnly.adoc[`GetPubKeyByXOnly`] 
| Look up a public key by any key id derived from an x‐only pubkey.
| xref:HidingSigningProvider/GetTaprootBuilder.adoc[`GetTaprootBuilder`]  [.small]#[virtual]#
| Look up the Taproot builder for an output key.
| xref:HidingSigningProvider/GetTaprootSpendData.adoc[`GetTaprootSpendData`]  [.small]#[virtual]#
| Look up the Taproot spend data for an output key.
| xref:SigningProvider/HaveCScript.adoc[`HaveCScript`]  [.small]#[virtual]#
| Report whether a script with the given id is known.
| xref:SigningProvider/HaveKey.adoc[`HaveKey`]  [.small]#[virtual]#
| Report whether a private key with the given id is known.
| xref:HidingSigningProvider/SetMuSig2SecNonce.adoc[`SetMuSig2SecNonce`]  [.small]#[virtual]#
| Store a MuSig2 secret nonce for a signing session.
|===


== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:GetKeyForDestination.adoc[`GetKeyForDestination`]
| Return the CKeyID of the key involved in a script (if there is a unique one).
| xref:IsSegWitOutput.adoc[`IsSegWitOutput`]
| Check whether a scriptPubKey is known to be segwit.
| xref:ProduceSignature.adoc[`ProduceSignature`]
| Produce a script signature using a generic signature creator.
| xref:SignPSBTInput.adoc[`SignPSBTInput`]
| Signs a PSBTInput, verifying that all provided data matches what is being signed.
| xref:UpdatePSBTOutput.adoc[`UpdatePSBTOutput`]
| Updates a PSBTOutput with information from provider.
|===


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