[#CachingTransactionSignatureChecker-VerifyECDSASignature]
= xref:CachingTransactionSignatureChecker.adoc[CachingTransactionSignatureChecker]::VerifyECDSASignature
:relfileprefix: ../
:mrdocs:

Verify an ECDSA signature, using the cache when possible.

== Synopsis

Declared in `<script/sigcache.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
bool
VerifyECDSASignature(
    std::vector<unsigned char> const& vchSig,
    xref:CPubKey.adoc[CPubKey] const& vchPubKey,
    xref:uint256.adoc[uint256] const& sighash) const override;
----

== Return Value

true if the signature is valid.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *vchSig*
| The ECDSA signature bytes.
| *vchPubKey*
| The public key to check against.
| *sighash*
| The signature hash that was signed.
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#