Install and configure bouncycastle JCE

1. Install the bouncycastle. JAR File

Find the file and perform the following two steps:

(1) copy the file to the jdk1.3.1/JRE/lib/EXT/directory.

(2) copy the file to the C:/ProgramFiles/program oft/JRE/1.3/lib/EXT directory.

Note that the preceding two steps must be completed.

2. Configure the java. Security File

First, find the following two files:

(1) jdk1.3.1/JRE/lib/security/Java. Security File

(2) c:/ProgramFiles/kerberoft/JRE/1.3/lib/security/Java. Security

Open the above two files and find the following statement:

Security. provider.1 = sun. Security. provider. Sun

Security. provider.2 = com. Sun. rsajca. Provider

Add the following statement to the end of the preceding statement:

Security. provider.3 = org. bouncycastle. JCE. provider. bouncycastleprovider

Note that:

(1) Both files must be modified.

(2) the case cannot be incorrect.

3. test whether the installation is correct

Check whether the jceinstalltest. Java program exists in two cases:

(1) have this program

You compile and run it. As follows:

A. javac jceinstalltest. Java

B. Java jceinstalltest

Note the case sensitivity. If the output is generated, the installation is correct. Otherwise, follow the previous steps to check for errors.

(2) The program does not exist.

You can copy this program from this document and compile and run it as needed.

The jceinstalltest. Java program code is as follows:

* ************************* Jceinstalltest. java ***************************

Import javax. crypto .*;

Public class jceinstalltest {

Public static final string stringtoencrypt = "this is a test .";

Public static void main (string [] ARGs) throws exception {

System. Out. Print ("attempting to get a blowfish key ...");

Keygenerator = keygenerator. getinstance ("Blowfish ");

Keygenerator. INIT (128 );

Secretkey key = keygenerator. generatekey ();

System. Out. println ("OK ");

System. Out. println ("attempting to get a cipher and encrypt ...");

Cipher cipher = cipher. getinstance ("Blowfish/ECB/pkcs5padding ");

Cipher. INIT (Cipher. encrypt_mode, key );

Byte [] ciphertext = cipher. dofinal (stringtoencrypt. getbytes ("utf8 "));

System. Out. println ("OK ");

System. Out. println ("test completed successfully .");

}

}

* *************************** Jceinstalltest. java *************************