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authorMartin Kretzschmar <mkretzschmar@src.gnome.org>2004-05-16 22:45:42 (GMT)
committer Martin Kretzschmar <mkretzschmar@src.gnome.org>2004-05-16 22:45:42 (GMT)
commitad63666daeeda50acc7630132d61fe044634fddd (patch)
tree487b52b30f8a563cbb2e16c6fd2527a6eeb5990f /pdf/xpdf/Decrypt.cc
parentd57c02ebc09bfd1a0cac44140ec7a80dbe43877e (diff)
Imported Xpdf 2.03 and fixed build.
* ANNOUNCE: * CHANGES: * README: * aconf2.h: * configure.in: * dj_make.bat: * doc/pdffonts.1: * doc/pdffonts.cat: * doc/pdffonts.hlp: * doc/pdfimages.1: * doc/pdfimages.cat: * doc/pdfimages.hlp: * doc/pdfinfo.1: * doc/pdfinfo.cat: * doc/pdfinfo.hlp: * doc/pdftopbm.1: * doc/pdftopbm.cat: * doc/pdftopbm.hlp: * doc/pdftops.1: * doc/pdftops.cat: * doc/pdftops.hlp: * doc/pdftotext.1: * doc/pdftotext.cat: * doc/pdftotext.hlp: * doc/xpdf.1: * doc/xpdf.cat: * doc/xpdf.hlp: * doc/xpdfrc.5: * doc/xpdfrc.cat: * doc/xpdfrc.hlp: * goo/gfile.cc: * ms_make.bat: * vms_make.com: * xpdf/Annot.cc: * xpdf/Array.cc: * xpdf/BuiltinFontTables.cc: * xpdf/CMap.cc: * xpdf/CMap.h: * xpdf/Catalog.cc: * xpdf/CharCodeToUnicode.cc: * xpdf/CharCodeToUnicode.h: * xpdf/Decrypt.cc: * xpdf/Dict.cc: * xpdf/ErrorCodes.h: * xpdf/FTFont.cc: * xpdf/FTFont.h: * xpdf/FontFile.cc: * xpdf/FontFile.h: * xpdf/Function.cc: * xpdf/Gfx.cc: * xpdf/Gfx.h: * xpdf/GfxFont.cc: * xpdf/GfxFont.h: * xpdf/GfxState.cc: * xpdf/GfxState.h: * xpdf/GlobalParams.cc: * xpdf/GlobalParams.h: * xpdf/JBIG2Stream.cc: * xpdf/Link.cc: * xpdf/Link.h: * xpdf/Makefile.am: * xpdf/OutputDev.h: * xpdf/PDFDoc.cc: * xpdf/PDFDoc.h: * xpdf/PSOutputDev.cc: * xpdf/PSOutputDev.h: * xpdf/Page.cc: * xpdf/Page.h: * xpdf/Parser.cc: * xpdf/Stream.cc: * xpdf/Stream.h: * xpdf/TTFont.cc: * xpdf/TTFont.h: * xpdf/TextOutputDev.cc: * xpdf/TextOutputDev.h: * xpdf/UnicodeMap.cc: * xpdf/UnicodeMap.h: * xpdf/UnicodeTypeTable.cc: * xpdf/UnicodeTypeTable.h: * xpdf/XOutputDev.cc: * xpdf/XOutputDev.h: * xpdf/XPDFApp.cc: * xpdf/XPDFCore.cc: * xpdf/XPDFCore.h: * xpdf/XPDFViewer.cc: * xpdf/XPDFViewer.h: * xpdf/XRef.cc: * xpdf/about-text.h: * xpdf/config.h: * xpdf/gpdf-control.cc: * xpdf/gpdf-link-canvas-item.cc: * xpdf/gpdf-links-canvas-layer.cc: * xpdf/pdffonts.cc: * xpdf/pdfimages.cc: * xpdf/pdfinfo.cc: * xpdf/pdftopbm.cc: * xpdf/pdftops.cc: * xpdf/pdftotext.cc: * xpdf/tests/test-links.cc: * xpdf/vms_make.com: * xpdf/xpdf.cc: Imported Xpdf 2.03 and fixed build.
Diffstat (limited to 'pdf/xpdf/Decrypt.cc')
-rw-r--r--pdf/xpdf/Decrypt.cc60
1 files changed, 29 insertions, 31 deletions
diff --git a/pdf/xpdf/Decrypt.cc b/pdf/xpdf/Decrypt.cc
index dca3762..dab0750 100644
--- a/pdf/xpdf/Decrypt.cc
+++ b/pdf/xpdf/Decrypt.cc
@@ -74,6 +74,7 @@ GBool Decrypt::makeFileKey(int encVersion, int encRevision, int keyLength,
int len, i, j;
// try using the supplied owner password to generate the user password
+ *ownerPasswordOk = gFalse;
if (ownerPassword) {
len = ownerPassword->getLength();
if (len < 32) {
@@ -82,43 +83,40 @@ GBool Decrypt::makeFileKey(int encVersion, int encRevision, int keyLength,
} else {
memcpy(test, ownerPassword->getCString(), 32);
}
- } else {
- memcpy(test, passwordPad, 32);
- }
- md5(test, 32, test);
- if (encRevision == 3) {
- for (i = 0; i < 50; ++i) {
- md5(test, 16, test);
- }
- }
- if (encRevision == 2) {
- rc4InitKey(test, keyLength, fState);
- fx = fy = 0;
- for (i = 0; i < 32; ++i) {
- test2[i] = rc4DecryptByte(fState, &fx, &fy, ownerKey->getChar(i));
- }
- } else {
- memcpy(test2, ownerKey->getCString(), 32);
- for (i = 19; i >= 0; --i) {
- for (j = 0; j < keyLength; ++j) {
- tmpKey[j] = test[j] ^ i;
+ md5(test, 32, test);
+ if (encRevision == 3) {
+ for (i = 0; i < 50; ++i) {
+ md5(test, 16, test);
}
- rc4InitKey(tmpKey, keyLength, fState);
+ }
+ if (encRevision == 2) {
+ rc4InitKey(test, keyLength, fState);
fx = fy = 0;
- for (j = 0; j < 32; ++j) {
- test2[j] = rc4DecryptByte(fState, &fx, &fy, test2[j]);
+ for (i = 0; i < 32; ++i) {
+ test2[i] = rc4DecryptByte(fState, &fx, &fy, ownerKey->getChar(i));
+ }
+ } else {
+ memcpy(test2, ownerKey->getCString(), 32);
+ for (i = 19; i >= 0; --i) {
+ for (j = 0; j < keyLength; ++j) {
+ tmpKey[j] = test[j] ^ i;
+ }
+ rc4InitKey(tmpKey, keyLength, fState);
+ fx = fy = 0;
+ for (j = 0; j < 32; ++j) {
+ test2[j] = rc4DecryptByte(fState, &fx, &fy, test2[j]);
+ }
}
}
- }
- userPassword2 = new GString((char *)test2, 32);
- if (makeFileKey2(encVersion, encRevision, keyLength, ownerKey, userKey,
- permissions, fileID, userPassword2, fileKey)) {
- *ownerPasswordOk = gTrue;
+ userPassword2 = new GString((char *)test2, 32);
+ if (makeFileKey2(encVersion, encRevision, keyLength, ownerKey, userKey,
+ permissions, fileID, userPassword2, fileKey)) {
+ *ownerPasswordOk = gTrue;
+ delete userPassword2;
+ return gTrue;
+ }
delete userPassword2;
- return gTrue;
}
- *ownerPasswordOk = gFalse;
- delete userPassword2;
// try using the supplied user password
return makeFileKey2(encVersion, encRevision, keyLength, ownerKey, userKey,