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authorMiklos Vajna <vmiklos@collabora.co.uk>2016-11-17 12:40:06 +0100
committerMiklos Vajna <vmiklos@collabora.co.uk>2016-11-17 15:54:06 +0100
commit972c1e9e7239ef84611b01dad5b112af8f353d3c (patch)
tree6c14d93b01a0071d29da179dc0706ebe36fca876 /xmlsecurity/source/pdfio/pdfdocument.cxx
parent07d4f5d9e3b40025aaee12bb309317b2d267fbdc (diff)
xmlsecurity PDF sign: handle AdES when writing SubFilter
Page 21 of "PAdES baseline signatures" specification from <http://www.etsi.org/deliver/etsi_en/319100_319199/31914201/01.01.01_60/en_31914201v010101p.pdf> says: "The Signature Dictionary shall contain a value of ETSI.CAdES.detached for the key SubFilter." So in case the UI has the adescompliant checkbox enabled, write that value instead of the Adobe default. Change-Id: I69e606a32fb09bebd5e9b25b32150d1b8672f544
Diffstat (limited to 'xmlsecurity/source/pdfio/pdfdocument.cxx')
-rw-r--r--xmlsecurity/source/pdfio/pdfdocument.cxx14
1 files changed, 9 insertions, 5 deletions
diff --git a/xmlsecurity/source/pdfio/pdfdocument.cxx b/xmlsecurity/source/pdfio/pdfdocument.cxx
index 0d5aec0ca1f2..9c71451601c4 100644
--- a/xmlsecurity/source/pdfio/pdfdocument.cxx
+++ b/xmlsecurity/source/pdfio/pdfdocument.cxx
@@ -357,7 +357,7 @@ sal_uInt32 PDFDocument::GetNextSignature()
return nRet + 1;
}
-sal_Int32 PDFDocument::WriteSignatureObject(const OUString& rDescription, sal_uInt64& rLastByteRangeOffset, sal_Int64& rContentOffset)
+sal_Int32 PDFDocument::WriteSignatureObject(const OUString& rDescription, bool bAdES, sal_uInt64& rLastByteRangeOffset, sal_Int64& rContentOffset)
{
// Write signature object.
sal_Int32 nSignatureId = m_aXRef.size();
@@ -374,7 +374,11 @@ sal_Int32 PDFDocument::WriteSignatureObject(const OUString& rDescription, sal_uI
OStringBuffer aContentFiller(MAX_SIGNATURE_CONTENT_LENGTH);
comphelper::string::padToLength(aContentFiller, MAX_SIGNATURE_CONTENT_LENGTH, '0');
aSigBuffer.append(aContentFiller.makeStringAndClear());
- aSigBuffer.append(">\n/Type/Sig/SubFilter/adbe.pkcs7.detached");
+ aSigBuffer.append(">\n/Type/Sig/SubFilter");
+ if (bAdES)
+ aSigBuffer.append("/ETSI.CAdES.detached");
+ else
+ aSigBuffer.append("/adbe.pkcs7.detached");
// Time of signing.
aSigBuffer.append(" /M (");
@@ -941,14 +945,14 @@ void PDFDocument::WriteXRef(sal_uInt64 nXRefOffset, PDFReferenceElement* pRoot)
}
}
-bool PDFDocument::Sign(const uno::Reference<security::XCertificate>& xCertificate, const OUString& rDescription)
+bool PDFDocument::Sign(const uno::Reference<security::XCertificate>& xCertificate, const OUString& rDescription, bool bAdES)
{
m_aEditBuffer.Seek(STREAM_SEEK_TO_END);
m_aEditBuffer.WriteCharPtr("\n");
sal_uInt64 nSignatureLastByteRangeOffset = 0;
sal_Int64 nSignatureContentOffset = 0;
- sal_Int32 nSignatureId = WriteSignatureObject(rDescription, nSignatureLastByteRangeOffset, nSignatureContentOffset);
+ sal_Int32 nSignatureId = WriteSignatureObject(rDescription, bAdES, nSignatureLastByteRangeOffset, nSignatureContentOffset);
sal_Int32 nAppearanceId = WriteAppearanceObject();
@@ -2021,7 +2025,7 @@ bool PDFDocument::ValidateSignature(SvStream& rStream, PDFObjectElement* pSignat
}
auto pSubFilter = dynamic_cast<PDFNameElement*>(pValue->Lookup("SubFilter"));
- if (!pSubFilter || pSubFilter->GetValue() != "adbe.pkcs7.detached")
+ if (!pSubFilter || (pSubFilter->GetValue() != "adbe.pkcs7.detached" && pSubFilter->GetValue() != "ETSI.CAdES.detached"))
{
SAL_WARN("xmlsecurity.pdfio", "PDFDocument::ValidateSignature: no or unsupported sub-filter");
return false;