diff options
| author | Jay Berkenbilt <ejb@ql.org> | 2013-06-15 02:40:20 +0200 |
|---|---|---|
| committer | Jay Berkenbilt <ejb@ql.org> | 2013-06-15 02:42:39 +0200 |
| commit | eae8370cd9c4e6ac748931a425721303561bd6ac (patch) | |
| tree | b6e83bb8bca29b286e9c50fb73f2cb96d7641499 /libqpdf | |
| parent | a3576a73593987b26cd3eff346f8f7c11f713cbd (diff) | |
| download | qpdf-eae8370cd9c4e6ac748931a425721303561bd6ac.tar.zst | |
Add optional /Length key in crypt filter dictionary
Diffstat (limited to 'libqpdf')
| -rw-r--r-- | libqpdf/QPDFWriter.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libqpdf/QPDFWriter.cc b/libqpdf/QPDFWriter.cc index dde6e559..8d169f3b 100644 --- a/libqpdf/QPDFWriter.cc +++ b/libqpdf/QPDFWriter.cc @@ -726,8 +726,12 @@ QPDFWriter::setEncryptionParametersInternal( std::string method = (this->encrypt_use_aes ? ((V < 5) ? "/AESV2" : "/AESV3") : "/V2"); + // The PDF spec says the /Length key is optional, but the PDF + // previewer on some versions of MacOS won't open encrypted + // files without it. encryption_dictionary["/CF"] = - "<< /StdCF << /AuthEvent /DocOpen /CFM " + method + " >> >>"; + "<< /StdCF << /AuthEvent /DocOpen /CFM " + method + + " /Length " + std::string((V < 5) ? "16" : "32") + " >> >>"; } this->encrypted = true; |