64 lines
1.6 KiB
Plaintext
64 lines
1.6 KiB
Plaintext
package com.nationalelectric.greenH5.identityAuth.util.devon.secure;
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import com.nationalelectric.greenH5.identityAuth.util.devon.HexUtils;
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import java.io.UnsupportedEncodingException;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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/**
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* MD5工具类
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*
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* TODO: 2017/8/14 重构为Hash接口digest方法，提供MD5, SHA1, SHA256等实现类
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*
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* @author <a href="mailto:93785732@qq.com">ZhengDaHong@fzfx</a>
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* @since 2017/5/2 11:18
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*/
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public class Md5Utils {
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public static final String HASH_ALGORITHM_NAME = "MD5";
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private static final String CHAR_ENCODING = "UTF-8";
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/**
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* 对传入的字符串做MD5哈希处理，返回大写结果
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*
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* @param source
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* @return
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*/
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public static String md5WithUpperCase(String source) {
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return md5(source, false);
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}
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/**
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* 对传入的字符串做MD5哈希处理，返回小写结果
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*
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* @param source
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* @return
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*/
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public static String md5WithLowerCase(String source) {
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return md5(source, true);
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}
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/**
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* 对传入的字符串做MD5哈希处理
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*
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* @param source
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* @param useLowerCase
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* @return
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*/
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private static String md5(String source, boolean useLowerCase) {
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try {
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MessageDigest md5 = MessageDigest.getInstance(HASH_ALGORITHM_NAME);
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return HexUtils.encode(md5.digest(source.getBytes(CHAR_ENCODING)), useLowerCase);
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} catch (NoSuchAlgorithmException e) {
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// Formalization, should not occurs actually.
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throw new IllegalStateException("No such algorithm which named 'MD5'", e);
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} catch (UnsupportedEncodingException e) {
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throw new IllegalStateException("Unsupported encoding named 'UTF-8'", e);
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}
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}
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}
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