encode and decode for pdf

PDF解密工具\codec.dll
...........\data\fix-qdf
...........\....\libgcc_s_dw2-1.dll
...........\....\libstdc++-6.dll
...........\....\pdftk.exe
...........\....\qpdf.exe
...........\....\qpdf17.dll
...........\....\qpdf3.dll
...........\....\zlib-flate.exe
...........\PPR.exe
...........\setup.ini
...........\skinh.she
...........\skinh6.dll
...........\unins000.dat
...........\unins000.exe
...........\data
PDF解密工具

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