/*
?*?Decrypt?the?specified?ciphertext?using?the?given?private?key.
?*/
public?void?dec（String?pubfile?String?prvfile?String?encfile?String?decfile）?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-05-15?18:37??屬性基加密java實現\
?????目錄???????????0??2019-05-15?18:37??屬性基加密java實現\cpabe-master\
?????文件?????????532??2014-07-24?04:26??屬性基加密java實現\cpabe-master\AUTHORS.md
?????文件???????15127??2014-07-24?04:26??屬性基加密java實現\cpabe-master\COPYING
?????文件?????????269??2014-07-24?04:26??屬性基加密java實現\cpabe-master\INSTALL
?????文件?????????495??2014-07-24?04:26??屬性基加密java實現\cpabe-master\README
?????目錄???????????0??2019-05-15?18:37??屬性基加密java實現\cpabe-master\doc\
?????文件?????1158708??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\Bachelor-Thesis.pdf
?????文件?????????153??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\Dec.java
?????文件????????1832??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\DemoForCpabe.java
?????文件?????????521??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\Enc.java
?????文件??????????78??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\HelloWorld.java
?????文件?????????151??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\Keygen.java
?????文件?????????492??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\Makefile
?????文件?????????119??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\Setup.java
?????文件????????2923??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\abstract.tex
?????文件?????????523??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\appendix.tex
?????文件????????5119??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\background.tex
?????文件????????9485??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\construction.tex
?????文件????????2918??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\graduation_design.bib
?????文件????????4203??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\graduation_design.tex
?????文件????????5722??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\implementation.tex
?????文件????????7831??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\introduction.tex
?????文件????????1256??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\related_work.tex
?????文件????????5536??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\sdu_pic.jpg
?????文件?????????947??2014-07-24?04:26??屬性基加密java實現\cpabe-master\doc\titlepage.tex
?????目錄???????????0??2019-05-15?18:37??屬性基加密java實現\cpabe-master\src\
?????文件???????35673??2014-07-24?04:26??屬性基加密java實現\cpabe-master\src\DemoForBswabe.java
?????文件???????34435??2014-07-24?04:26??屬性基加密java實現\cpabe-master\src\DemoForCpabe.java
?????目錄???????????0??2019-05-15?18:37??屬性基加密java實現\cpabe-master\src\bswabe\
?????文件???????15788??2014-07-24?04:26??屬性基加密java實現\cpabe-master\src\bswabe\Bswabe.java
............此處省略18個文件信息