Qt: Get the private key for signing messages via WalletModel

Author: luke-jr

src/qt/signverifymessagedialog.cpp

@@ -142,7 +142,7 @@ void SignVerifyMessageDialog::on_signMessageButton_SM_clicked()
     }
 
     CKey key;
-    if (!pwalletMain->GetKey(keyID, key))
+    if (!model->getPrivKey(keyID, key))
     {
         ui->statusLabel_SM->setStyleSheet("QLabel { color: red; }");
         ui->statusLabel_SM->setText(tr("Private key for the entered address is not available."));

src/qt/walletmodel.cpp

@@ -563,6 +563,11 @@ bool WalletModel::havePrivKey(const CKeyID &address) const
     return wallet->HaveKey(address);
 }
 
+bool WalletModel::getPrivKey(const CKeyID &address, CKey& vchPrivKeyOut) const
+{
+    return wallet->GetKey(address, vchPrivKeyOut);
+}
+
 // returns a list of COutputs from COutPoints
 void WalletModel::getOutputs(const std::vector<COutPoint>& vOutpoints, std::vector<COutput>& vOutputs)
 {

src/qt/walletmodel.h

@@ -188,6 +188,7 @@ class WalletModel : public QObject
 
     bool getPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const;
     bool havePrivKey(const CKeyID &address) const;
+    bool getPrivKey(const CKeyID &address, CKey& vchPrivKeyOut) const;
     void getOutputs(const std::vector<COutPoint>& vOutpoints, std::vector<COutput>& vOutputs);
     bool isSpent(const COutPoint& outpoint) const;
     void listCoins(std::map<QString, std::vector<COutput> >& mapCoins) const;