Provided by java jdk6 api design of a communication process of encryption and decryption. Two very commonly used algorithms: des+ rsa

encryption
..........\.classpath
..........\.project
..........\.settings
..........\.........\org.eclipse.jdt.core.prefs
..........\bcprov-jdk14-136.jar
..........\bcprov-jdk16-146.jar
..........\bin
..........\...\com
..........\...\...\crypto
..........\...\...\......\encrypt
..........\...\...\......\.......\CreateKey.class
..........\...\...\......\.......\EncryptData.class
..........\...\...\......\.......\UnEncryptData.class
..........\...\...\......\.......\Util.class
..........\...\resource
..........\...\........\algorithm.properties
..........\...\........\key
..........\...\RSAGen
..........\...\......\RSAUtil.class
..........\...\test
..........\...\....\TestFile.class
..........\encrypt_result.dat
..........\src
..........\...\com
..........\...\...\crypto
..........\...\...\......\encrypt
..........\...\...\......\.......\CreateKey.java
..........\...\...\......\.......\EncryptData.java
..........\...\...\......\.......\UnEncryptData.java
..........\...\...\......\.......\Util.java
..........\...\resource
..........\...\........\algorithm.properties
..........\...\........\key
..........\...\RSAGen
..........\...\......\RSAUtil.java
..........\...\test
..........\...\....\TestFile.java

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