commons-codecのいくつかの応用

TestCodecDemo.JAvaコード:

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.digest.DigestUtils;

public class TestCodecDemo {

	/**
	 *  MD5 
	 * */
	private static String getMd5Pwd(String password){
		String returnStr = DigestUtils.md5Hex(password);
		System.out.println(returnStr);
		return DigestUtils.md5Hex(returnStr);
	}
	
	/**
	 *  SHA1 
	 * */
	private static String getSha1Pwd(String password){
		String returnStr = DigestUtils.shaHex(password);
		System.out.println(returnStr);
		return returnStr;
	}
	
	/**
	 *  BASE64 
	 * */
	private static String getBase64Pwd(String password){
		byte[] b = Base64.encodeBase64(password.getBytes(), true);
		String returnStr = new String(b);
		System.out.println(returnStr);
		return returnStr;
	}
	
	/**
	 *  BASE64 
	 * */
	private static String getUnBase64Pwd(String password){
		byte[] b = Base64.decodeBase64(password.getBytes());
		String returnStr = new String(b);
		System.out.println(returnStr);
		return returnStr;
	}
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String password = "abc";
		TestCodecDemo.getMd5Pwd(password);
		TestCodecDemo.getSha1Pwd(password);
		TestCodecDemo.getBase64Pwd(password);
		TestCodecDemo.getUnBase64Pwd("YWJj");
	}

}