[#wallet-feebumper-SignatureWeightChecker-CheckECDSASignature-0e]
= xref:wallet.adoc[wallet]::xref:wallet/feebumper.adoc[feebumper]::xref:wallet/feebumper/SignatureWeightChecker.adoc[SignatureWeightChecker]::CheckECDSASignature
:relfileprefix: ../../../
:mrdocs:

`CheckECDSASignature` overloads

== Synopses

Declared in `<script/interpreter.h>`

Forward the ECDSA signature check to the wrapped checker.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
bool
xref:DeferringSignatureChecker/CheckECDSASignature.adoc[CheckECDSASignature](
    std::vector<unsigned char> const& scriptSig,
    std::vector<unsigned char> const& vchPubKey,
    xref:CScript.adoc[CScript] const& scriptCode,
    xref:SigVersion.adoc[SigVersion] sigversion) const override;
----

[.small]#xref:DeferringSignatureChecker/CheckECDSASignature.adoc[_» more..._]#

Validates an ECDSA signature and records its weight when valid.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
bool
xref:wallet/feebumper/SignatureWeightChecker/CheckECDSASignature-00.adoc[CheckECDSASignature](
    std::vector<unsigned char> const& sig,
    std::vector<unsigned char> const& pubkey,
    xref:CScript.adoc[CScript] const& script,
    xref:SigVersion.adoc[SigVersion] sigversion) const override;
----

[.small]#xref:wallet/feebumper/SignatureWeightChecker/CheckECDSASignature-00.adoc[_» more..._]#

== Return Value

* `true` if the signature is valid.
* true if the signature is valid.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *scriptSig*
| The serialized signature, including its sighash byte.
| *vchPubKey*
| The serialized public key.
| *scriptCode*
| The script code committed to by the signature.
| *sigversion*
| The signature version selecting the hashing scheme.
| *sig*
| The signature to verify.
| *pubkey*
| The public key to verify against.
| *script*
| The script being evaluated.
|===


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