e459. generating a symmetric key.txt

这里面包含了一百多个JAVA源文件

This example generates a key for various symmetric cipher algorithms. See also e458 Listing All Available Symmetric Key Generators. 
    try {
        // Generate a DES key
        KeyGenerator keyGen = KeyGenerator.getInstance("DES");
        SecretKey key = keyGen.generateKey();
    
        // Generate a Blowfish key
        keyGen = KeyGenerator.getInstance("Blowfish");
        key = keyGen.generateKey();
    
        // Generate a triple DES key
        keyGen = KeyGenerator.getInstance("DESede");
        key = keyGen.generateKey();
    } catch (java.security.NoSuchAlgorithmException e) {
    }