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Signature plugin: Some builder functions

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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