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3.功能性：本系統實現數字內容的數字簽名及驗簽功能。首先，用戶指定需簽名的數字內容；系統計算這份數字內容的Hash值；然后系統對Hash值進行簽名，完成文件的簽名操作；此外，系統中的驗簽算法可以判斷簽名是否合法。 4.創新性：目前，同類系統主要采用ECDSA或者SM2等標準數字簽名算法進行簽名，本系統基于白盒數字簽名算法對文件簽名，提高了不可信環境中用戶簽名私鑰的安全性。 5.實用性：該系統以純軟件的方式實現不可信環境中的簽名操作，成本低。而且，產生的簽名可以用標準算法進行驗簽，通用性強。

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代碼片段和文件信息 

/*
?*?Licensed?to?the?Apache?Software?Foundation?（ASF）?under?one?or?more
?*?contributor?license?agreements.?See?the?NOTICE?file?distributed?with
?*?this?work?for?additional?information?regarding?copyright?ownership.
?*?The?ASF?licenses?this?file?to?You?under?the?Apache?License?Version?2.0
?*?（the?“License“）;?you?may?not?use?this?file?except?in?compliance?with
?*?the?License.?You?may?obtain?a?copy?of?the?License?at
?*
?*?http://www.apache.org/licenses/LICENSE-2.0
?*
?*?Unless?required?by?applicable?law?or?agreed?to?in?writing?software
?*?distributed?under?the?License?is?distributed?on?an?“AS?IS“?BASIS
?*?WITHOUT?WARRANTIES?OR?CONDITIONS?OF?ANY?KIND?either?express?or?implied.
?*?See?the?License?for?the?specific?language?governing?permissions?and
?*?limitations?under?the?License.
?*
?*/

/*
?*?This?package?is?based?on?the?work?done?by?Keiron?Liddle?Aftex?Software
?*??to?whom?the?Ant?project?is?very?grateful?for?his
?*?great?code.
?*/

using?System;

namespace?Org.BouncyCastle.Apache.Bzip2
{
????/**
????*?base?class?for?both?the?compress?and?decompress?classes.
????*?Holds?common?arrays?and?static?data.
????*
????*?@author?Keiron?Liddle
????*/
????public?class?BZip2Constants?{

????????public?const?int?baseBlockSize?=?100000;
????????public?const?int?MAX_ALPHA_SIZE?=?258;
????????public?const?int?MAX_CODE_LEN?=?23;
????????public?const?int?RUNA?=?0;
????????public?const?int?RUNB?=?1;
????????public?const?int?N_GROUPS?=?6;
????????public?const?int?G_SIZE?=?50;
????????public?const?int?N_ITERS?=?4;
????????public?const?int?MAX_SELECTORS?=?（2?+?（900000?/?G_SIZE））;
????????public?const?int?NUM_OVERSHOOT_BYTES?=?20;

????????public?static?readonly?int[]?rNums?=?{
????????????619?720?127?481?931?816?813?233?566?247
????????????985?724?205?454?863?491?741?242?949?214
????????????733?859?335?708?621?574?73?654?730?472
????????????419?436?278?496?867?210?399?680?480?51
????????????878?465?811?169?869?675?611?697?867?561
????????????862?687?507?283?482?129?807?591?733?623
????????????150?238?59?379?684?877?625?169?643?105
????????????170?607?520?932?727?476?693?425?174?647
????????????73?122?335?530?442?853?695?249?445?515
????????????909?545?703?919?874?474?882?500?594?612
????????????641?801?220?162?819?984?589?513?495?799
????????????161?604?958?533?221?400?386?867?600?782
????????????382?596?414?171?516?375?682?485?911?276
????????????98?553?163?354?666?933?424?341?533?870
????????????227?730?475?186?263?647?537?686?600?224
????????????469?68?770?919?190?373?294?822?808?206
????????????184?943?795?384?383?461?404?758?839?887
????????????715?67?618?276?204?918?873?777?604?560
????????????951?160?578?722?79?804?96?409?713?940
????????????652?934?970?447?318?353?859?672?112?785
????????????645?863

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-10-16?17:40??基于余數系統的sm2白盒數字簽名\
?????目錄???????????0??2018-10-16?17:43??基于余數系統的sm2白盒數字簽名\源碼\
?????目錄???????????0??2018-10-16?17:44??基于余數系統的sm2白盒數字簽名\源碼\sm2\
?????文件?????????902??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\.gitattributes
?????文件?????????203??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\.gitignore
?????文件????????2718??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\BouncyCastle-PCL.sln
?????文件?????2686976??2018-04-09?16:18??基于余數系統的sm2白盒數字簽名\源碼\sm2\BouncyCastle.sdf
?????文件????????6890??2018-04-12?14:01??基于余數系統的sm2白盒數字簽名\源碼\sm2\BouncyCastle.sln
?????文件?????????596??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\BouncyCastle.snk
?????文件??????237056??2018-04-12?14:01??基于余數系統的sm2白盒數字簽名\源碼\sm2\BouncyCastle.v12.suo
?????目錄???????????0??2018-10-16?17:44??基于余數系統的sm2白盒數字簽名\源碼\sm2\Debug\
?????目錄???????????0??2018-10-16?17:41??基于余數系統的sm2白盒數字簽名\源碼\sm2\FxCop\
?????文件????????3129??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\FxCop\CustomDictionary.xml
?????文件????????3624??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\MimeKit.BouncyCastle.nuspec
?????文件????????2945??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\README.md
?????目錄???????????0??2018-10-16?17:44??基于余數系統的sm2白盒數字簽名\源碼\sm2\Release\
?????目錄???????????0??2018-10-16?17:41??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\
?????文件???????91305??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\BouncyCastle.Android.csproj
?????文件???????90858??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\BouncyCastle.csproj
?????文件???????91029??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\BouncyCastle.iOS.csproj
?????文件????????5926??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\Contributors.html
?????文件????????1846??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\License.html
?????文件???????10397??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\NBuild.build
?????文件???????33971??2015-12-28?22:34??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\Readme.html
?????目錄???????????0??2018-10-16?17:41??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\bin\
?????目錄???????????0??2018-10-16?17:41??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\bin\Debug\
?????目錄???????????0??2018-10-16?17:41??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\bin\Debug\lib\
?????目錄???????????0??2018-10-16?17:41??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\bin\Debug\lib\net20\
?????文件?????2349568??2018-03-29?19:58??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\bin\Debug\lib\net20\BouncyCastle.dll
?????文件?????8279552??2018-03-29?19:58??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\bin\Debug\lib\net20\BouncyCastle.pdb
?????目錄???????????0??2018-10-16?17:41??基于余數系統的sm2白盒數字簽名\源碼\sm2\crypto\bin\Release\
............此處省略3043個文件信息

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