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Certificate verification bugfixing

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This commit is contained in:
Jakub Melka
2020-06-15 19:07:01 +02:00
parent 783aa8d007
commit f602eb5a73
2 changed files with 35 additions and 1 deletions
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35
PdfForQtLib/sources/pdfsignaturehandler.cpp
View File

@ -315,6 +315,8 @@ void PDFPublicKeySignatureHandler::verifyCertificate(PDFSignatureVerificationRes
Q_ASSERT(store);
Q_ASSERT(context);
addTrustedCertificates(store);
STACK_OF(PKCS7_SIGNER_INFO)* signerInfo = PKCS7_get_signer_info(pkcs7);
const int signerInfoCount = sk_PKCS7_SIGNER_INFO_num(signerInfo);
STACK_OF(X509)* certificates = getCertificates(pkcs7);
@ -332,7 +334,7 @@ void PDFPublicKeySignatureHandler::verifyCertificate(PDFSignatureVerificationRes
break;
}
if (!X509_STORE_CTX_init(context, store, signer, nullptr))
if (!X509_STORE_CTX_init(context, store, signer, certificates))
{
result.addCertificateGenericError();
break;
@ -344,6 +346,8 @@ void PDFPublicKeySignatureHandler::verifyCertificate(PDFSignatureVerificationRes
break;
}
X509_STORE_CTX_set_flags(context, X509_V_FLAG_TRUSTED_FIRST);
int verificationResult = X509_verify_cert(context);
if (verificationResult <= 0)
{
@ -414,3 +418,32 @@ PDFSignatureVerificationResult PDFSignatureHandler_adbe_pkcs7_detached::verify()
}
} // namespace pdf
#ifdef Q_OS_WIN
#include <Windows.h>
#include <wincrypt.h>
#pragma comment(lib, "crypt32.lib")
#endif
void pdf::PDFPublicKeySignatureHandler::addTrustedCertificates(X509_STORE* store) const
{
#ifdef Q_OS_WIN
HCERTSTORE certStore = CertOpenSystemStore(NULL, L"ROOT");
PCCERT_CONTEXT context = nullptr;
if (certStore)
{
while (context = CertEnumCertificatesInStore(certStore, context))
{
const unsigned char* pointer = context->pbCertEncoded;
X509* certificate = d2i_X509(nullptr, &pointer, context->cbCertEncoded);
if (certificate)
{
X509_STORE_add_cert(store, certificate);
X509_free(certificate);
}
}
CertCloseStore(certStore, CERT_CLOSE_STORE_FORCE_FLAG);
}
#endif
}

1
PdfForQtLib/sources/pdfsignaturehandler_impl.h
View File

@ -41,6 +41,7 @@ protected:
void initializeResult(PDFSignatureVerificationResult& result) const;
void verifyCertificate(PDFSignatureVerificationResult& result) const;
void verifySignature(PDFSignatureVerificationResult& result) const;
void addTrustedCertificates(X509_STORE* store) const;
/// Return a list of certificates from PKCS7 object
static STACK_OF(X509)* getCertificates(PKCS7* pkcs7);