91av视频/亚洲h视频/操亚洲美女/外国一级黄色毛片 - 国产三级三级三级三级

  • 大小: 35KB
    文件類型: .rar
    金幣: 2
    下載: 0 次
    發布日期: 2021-05-17
  • 語言: Java
  • 標簽: 密鑰分配??

資源簡介

密鑰分配實現混合通信,對稱密鑰實現通信,公鑰加密私鑰傳送。發方加密明文發給收方,并用收方的公鑰加密私鑰發送給收方,收方用自己的私鑰解密得到發方的私鑰,然后解密密文,得到明文消息。

資源截圖

代碼片段和文件信息

import?java.io.FileInputStream;
import?java.io.objectInputStream;
import?java.security.Key;

import?javax.crypto.Cipher;

public?class?Dec_DES?{

/**
?*?@param?args
?*/
public?static?String?decrypt(byte[]?ctext){
//?TODO?Auto-generated?method?stub
String?p?=?““;
byte[]ptext?=?null;
try?{
FileInputStream?f2?=?new?FileInputStream(“DES_key.dat“);//從文件中讀取密鑰。
objectInputStream?b2?=?new?objectInputStream(f2);
Key?k?=?(Key)b2.readobject();?
Cipher?cp?=?Cipher.getInstance(“DESede“);//創建解密實例。
cp.init(Cipher.DECRYPT_MODE?k);
System.out.println(““);
ptext?=?cp.doFinal(ctext);
p?=?new?String(ptext“UTF8“);
}?catch?(Exception?e)?{
e.printStackTrace();
}
return?p;
}

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????295??2011-05-11?08:06??test5\.classpath

?????文件????????368??2011-05-11?08:06??test5\.project

?????文件????????282??2011-05-13?13:28??test5\DES_key.dat

?????文件????????894??2011-05-13?13:31??test5\Skey_RSA_priv.dat

?????文件????????419??2011-05-13?13:31??test5\Skey_RSA_pub.dat

?????文件??????????0??2011-05-11?16:35??test5\.metadata\.lock

?????文件??????38676??2011-05-11?16:35??test5\.metadata\.log

?????文件???????2936??2011-05-11?16:36??test5\.metadata\Instantiations-license.log

?????文件?????????26??2011-05-11?16:35??test5\.metadata\version.ini

?????文件????????373??2011-05-11?16:36??test5\.metadata\.mylyn\repositories.xml.zip

?????文件????????212??2011-05-11?16:38??test5\.metadata\.mylyn\tasklist.xml.zip

?????文件????????753??2011-05-11?16:36??test5\.metadata\.mylyn\backup\mylyndata-2011-05-11.zip

?????文件????????391??2011-05-11?16:38??test5\.metadata\.mylyn\contexts\activity.xml.zip

?????文件????????120??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.resources\.root\1.tree

?????文件??????????1??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.resources\.root\.indexes\history.version

?????文件?????????57??2011-05-11?16:35??test5\.metadata\.plugins\org.eclipse.core.resources\.root\.indexes\properties.index

?????文件??????????1??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.resources\.root\.indexes\properties.version

?????文件????????484??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.resources\.safetable\org.eclipse.core.resources

?????文件?????????73??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.core.resources.prefs

?????文件????????196??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.debug.ui.prefs

?????文件????????789??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.jdt.ui.prefs

?????文件?????????89??2011-05-11?16:35??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.jst.j2ee.webservice.ui.prefs

?????文件????????311??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.mylyn.context.ui.prefs

?????文件????????106??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.mylyn.java.ui.prefs

?????文件????????116??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.mylyn.tasks.ui.prefs

?????文件?????????88??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.team.cvs.ui.prefs

?????文件????????100??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.team.ui.prefs

?????文件????????111??2011-05-11?16:38??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.ui.ide.prefs

?????文件?????????79??2011-05-11?16:35??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.ui.prefs

?????文件???????1209??2011-05-11?16:35??test5\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.ui.workbench.prefs

............此處省略57個文件信息

評論

共有 條評論