commons-codec中[md5,sha,base64加密算法]的实现demo

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项目用到给用户密码加密，下载了apache的commons-codec jar包，贴出对几种加密算法实现的demo。记之。

commons-codec-1.10下载链接：

http://commons.apache.org/proper/commons-codec/download_codec.cgi

package demo;import org.apache.commons.codec.DecoderException;import org.apache.commons.codec.binary.Base64;import org.apache.commons.codec.binary.Hex;import org.apache.commons.codec.digest.DigestUtils;import org.apache.commons.codec.language.Metaphone;import org.apache.commons.codec.language.RefinedSoundex;import org.apache.commons.codec.language.Soundex;public class CodecDemo {public static void main(String[] args) throws DecoderException {String strPsw = "123456"; // 原密码String ecPsw = ""; // 加密密码String dcPsw = ""; // 解密密码// md5:消息摘要算法第五(Message Digest Algorithm)System.out.println("MD5:");ecPsw = DigestUtils.md5Hex(strPsw);System.out.println("Original:" + strPsw);System.out.println("MD5:" + ecPsw + "\n");// SHA1:安全哈希算法(Secure Hash Algorithm)System.out.println("SHA1:");ecPsw = DigestUtils.sha1Hex(strPsw);System.out.println("Original:" + strPsw);System.out.println("SHA1:" + ecPsw + "\n");// BASE64算法:网络上最常见的用于传输8Bit字节代码的编码方式之一System.out.println("Base64:");byte[] ec = null;byte[] dc = null;// 加密ec = Base64.encodeBase64(strPsw.getBytes(), true);ecPsw = new String(ec).replaceAll("\r|\n", ""); // str.replaceAll("\r|\n",// "") 去掉str末尾换行// 解密:(base64Psw=new String(ec)为要解密的字符串)dc = Base64.decodeBase64(ecPsw.getBytes());dcPsw = new String(dc).replaceAll("\r|\n", "");System.out.println("Original:" + strPsw);System.out.println("Base64:" + ecPsw);System.out.println("deBase64:" + dcPsw + "\n");// Hex编解码System.out.println("Hex:");char[] cc = null;cc = Hex.encodeHex(strPsw.getBytes(), true);ecPsw = new String(cc).replace("\r|\n", "");dc = Hex.decodeHex(ecPsw.toCharArray());dcPsw = new String(dc).replaceAll("\r|\n", "");System.out.println("Original:" + strPsw);System.out.println("Hex:" + ecPsw);System.out.println("deHex:" + dcPsw + "\n");// Metaphone及 Soundex编码// Metaphone 建立出相同的key给发音相似的单字, 比 Soundex 还要准确, 但是 Metaphone 没有固定长度,// Soundex 则是固定第一个英文字加上3个数字. 这通常是用在类似音比对, 也可以用在 MP3 的软件开发.System.out.println("Metaphone or Soundex:");Metaphone metaphone = new Metaphone();RefinedSoundex refinedSoundex = new RefinedSoundex();Soundex soundex = new Soundex();for (int i = 0; i < 2; i++) {String str = (i == 0) ? "resume" : "resin";String mString = null;String rString = null;String sString = null;try {mString = metaphone.encode(str);rString = refinedSoundex.encode(str);sString = soundex.encode(str);} catch (Exception ex) {;}System.out.println("Original:" + str);System.out.println("Metaphone:" + mString);System.out.println("RefinedSoundex:" + rString);System.out.println("Soundex:" + sString + "\n");}}}

参考文章：

http://www.oschina.net/question/12_4981?fromerr=ZTPdDmBt

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