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* sumatrapdf - vendor import * everything compiles (libjpeg, poppler, fitz, sumatrapdf) * does NOT link (remove the comment tags in the parent directory.rbuild file (rosapps dir) to build it) svn path=/trunk/; revision=29295
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
//========================================================================
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//
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// Decrypt.h
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//
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// Copyright 1996-2003 Glyph & Cog, LLC
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//
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//========================================================================
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#ifndef DECRYPT_H
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#define DECRYPT_H
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#ifdef USE_GCC_PRAGMAS
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#pragma interface
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#endif
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#include "goo/gtypes.h"
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#include "goo/GooString.h"
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//------------------------------------------------------------------------
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// Decrypt
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//------------------------------------------------------------------------
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class Decrypt {
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public:
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// Initialize the decryptor object.
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Decrypt(Guchar *fileKey, int keyLength, int objNum, int objGen);
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// Reset decryption.
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void reset();
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// Decrypt one byte.
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Guchar decryptByte(Guchar c);
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// Generate a file key. The <fileKey> buffer must have space for at
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// least 16 bytes. Checks <ownerPassword> and then <userPassword>
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// and returns true if either is correct. Sets <ownerPasswordOk> if
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// the owner password was correct. Either or both of the passwords
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// may be NULL, which is treated as an empty string.
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static GBool makeFileKey(int encVersion, int encRevision, int keyLength,
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GooString *ownerKey, GooString *userKey,
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int permissions, GooString *fileID,
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GooString *ownerPassword, GooString *userPassword,
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Guchar *fileKey, GBool encryptMetadata,
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GBool *ownerPasswordOk);
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private:
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static GBool makeFileKey2(int encVersion, int encRevision, int keyLength,
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GooString *ownerKey, GooString *userKey,
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int permissions, GooString *fileID,
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GooString *userPassword, Guchar *fileKey,
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GBool encryptMetadata);
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int objKeyLength;
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Guchar objKey[21];
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Guchar state[256];
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Guchar x, y;
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};
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#endif
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