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Signature plugin: Some builder functions

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This commit is contained in:
Jakub Melka
2022-05-20 19:57:35 +02:00
parent 4d8d916c3f
commit aebed28c6d
8 changed files with 1222 additions and 862 deletions
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57
Pdf4QtViewerPlugins/SignaturePlugin/certificatemanager.cpp
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@@ -190,4 +190,61 @@ bool CertificateManager::isCertificateValid(QString fileName, QString password)
return false;
}
bool SignatureFactory::sign(QString certificateName, QString password, QByteArray data, QByteArray& result)
{
QFile file(certificateName);
if (file.open(QFile::ReadOnly))
{
QByteArray certificateData = file.readAll();
file.close();
openssl_ptr<BIO> certificateBuffer(BIO_new(BIO_s_mem()), &BIO_free_all);
BIO_write(certificateBuffer.get(), certificateData.constData(), certificateData.length());
openssl_ptr<PKCS12> pkcs12(d2i_PKCS12_bio(certificateBuffer.get(), nullptr), &PKCS12_free);
if (pkcs12)
{
const char* passwordPointer = nullptr;
QByteArray passwordByteArray = password.isEmpty() ? QByteArray() : password.toUtf8();
if (!passwordByteArray.isEmpty())
{
passwordPointer = passwordByteArray.constData();
}
EVP_PKEY* key = nullptr;
X509* certificate = nullptr;
STACK_OF(X509)* certificates = nullptr;
if (PKCS12_parse(pkcs12.get(), passwordPointer, &key, &certificate, &certificates) == 1)
{
openssl_ptr<BIO> signedDataBuffer(BIO_new(BIO_s_mem()), &BIO_free_all);
BIO_write(signedDataBuffer.get(), data.constData(), data.length());
PKCS7* signature = PKCS7_sign(certificate, key, certificates, signedDataBuffer.get(), PKCS7_DETACHED | PKCS7_BINARY);
if (signature)
{
openssl_ptr<BIO> outputBuffer(BIO_new(BIO_s_mem()), &BIO_free_all);
i2d_PKCS7_bio(outputBuffer.get(), signature);
BUF_MEM* pksMemoryBuffer = nullptr;
BIO_get_mem_ptr(outputBuffer.get(), &pksMemoryBuffer);
result = QByteArray(pksMemoryBuffer->data, int(pksMemoryBuffer->length));
EVP_PKEY_free(key);
X509_free(certificate);
sk_X509_free(certificates);
return true;
}
EVP_PKEY_free(key);
X509_free(certificate);
sk_X509_free(certificates);
return false;
}
}
}
return false;
}
} // namespace pdfplugin

6
Pdf4QtViewerPlugins/SignaturePlugin/certificatemanager.h
View File

@@ -53,6 +53,12 @@ public:
static bool isCertificateValid(QString fileName, QString password);
};
class SignatureFactory
{
public:
static bool sign(QString certificateName, QString password, QByteArray data, QByteArray& result);
};
} // namespace pdfplugin
#endif // CERTIFICATEMANAGER_H

9
Pdf4QtViewerPlugins/SignaturePlugin/signatureplugin.cpp
View File

@@ -325,7 +325,16 @@ void SignaturePlugin::onSignDigitally()
SignDialog dialog(m_dataExchangeInterface->getMainWindow(), m_scene.isEmpty());
if (dialog.exec() == SignDialog::Accepted)
{
QByteArray data = "xxgaghre";
QByteArray result;
SignatureFactory::sign(dialog.getCertificatePath(), dialog.getPassword(), data, result);
for (int i = 1; i < 15; ++i)
{
data.append(data);
}
SignatureFactory::sign(dialog.getCertificatePath(), dialog.getPassword(), data, result);
}
}

5
Pdf4QtViewerPlugins/SignaturePlugin/signdialog.cpp
View File

@@ -63,6 +63,11 @@ QString SignDialog::getCertificatePath() const
return ui->certificateCombo->currentData().toString();
}
QString SignDialog::getPassword() const
{
return ui->certificatePasswordEdit->text();
}
void SignDialog::accept()
{
// Check certificate

1
Pdf4QtViewerPlugins/SignaturePlugin/signdialog.h
View File

@@ -46,6 +46,7 @@ public:
SignMethod getSignMethod() const;
QString getCertificatePath() const;
QString getPassword() const;
private:
Ui::SignDialog* ui;