/**
* 生成安全的密码，生成随机的16位salt并经过1024次 sha-1 hash
*/
public static String entryptPassword(String plainPassword) {
byte[] salt = Digests.generateSalt(SALT_SIZE);
byte[] hashPassword = Digests.sha1(plainPassword.getBytes(), salt, HASH_INTERATIONS);
return Encodes.encodeHex(salt)+Encodes.encodeHex(hashPassword);
}
/**
* 验证密码
* @param plainPassword 明文密码
* @param password 密文密码
* @return 验证成功返回true
*/
public static boolean validatePassword(String plainPassword, String password) {
byte[] salt = Encodes.decodeHex(password.substring(0,16));
byte[] hashPassword = Digests.sha1(plainPassword.getBytes(), salt, HASH_INTERATIONS);
return password.equals(Encodes.encodeHex(salt)+Encodes.encodeHex(hashPassword));
}
解码器
/**
* Copyright (c) 2005-2012 springside.org.cn
*/
package com.bw.portal.common.security;
import java.io.IOException;
import java.io.InputStream;
import java.security.GeneralSecurityException;
import java.security.MessageDigest;
import java.security.SecureRandom;
import org.apache.commons.lang3.Validate;
import com.bw.portal.common.utils.Exceptions;
/**
* 支持SHA-1/MD5消息摘要的工具类.
*
* 返回ByteSource，可进一步被编码为Hex, Base64或UrlSafeBase64
*
* @author calvin
*/
public class Digests {
private static final String SHA1 = "SHA-1";
private static final String MD5 = "MD5";
private static SecureRandom random = new SecureRandom();
/**
* 对输入字符串进行md5散列.
*/
public static byte[] md5(byte[] input) {
return digest(input, MD5, null, 1);
}
public static byte[] md5(byte[] input, int iterations) {
return digest(input, MD5, null, iterations);
}
/**
* 对输入字符串进行sha1散列.
*/
public static byte[] sha1(byte[] input) {
return digest(input, SHA1, null, 1);
}
public static byte[] sha1(byte[] input, byte[] salt) {
return digest(input, SHA1, salt, 1);
}
public static byte[] sha1(byte[] input, byte[] salt, int iterations) {
return digest(input, SHA1, salt, iterations);
}
/**
* 对字符串进行散列, 支持md5与sha1算法.
*/
private static byte[] digest(byte[] input, String algorithm, byte[] salt, int iterations) {
try {
MessageDigest digest = MessageDigest.getInstance(algorithm);
if (salt != null) {
digest.update(salt);
}
byte[] result = digest.digest(input);
for (int i = 1; i < iterations; i++) {
digest.reset();
result = digest.digest(result);
}
return result;
} catch (GeneralSecurityException e) {
throw Exceptions.unchecked(e);
}
}
/**
* 生成随机的Byte[]作为salt.
*
* @param numBytes byte数组的大小
*/
public static byte[] generateSalt(int numBytes) {
Validate.isTrue(numBytes > 0, "numBytes argument must be a positive integer (1 or larger)", numBytes);
byte[] bytes = new byte[numBytes];
random.nextBytes(bytes);
return bytes;
}
/**
* 对文件进行md5散列.
*/
public static byte[] md5(InputStream input) throws IOException {
return digest(input, MD5);
}
/**
* 对文件进行sha1散列.
*/
public static byte[] sha1(InputStream input) throws IOException {
return digest(input, SHA1);
}
private static byte[] digest(InputStream input, String algorithm) throws IOException {
try {
MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
int bufferLength = 8 * 1024;
byte[] buffer = new byte[bufferLength];
int read = input.read(buffer, 0, bufferLength);
while (read > -1) {
messageDigest.update(buffer, 0, read);
read = input.read(buffer, 0, bufferLength);
}
return messageDigest.digest();
} catch (GeneralSecurityException e) {
throw Exceptions.unchecked(e);
}
}
public static String string2MD5(String inStr){
MessageDigest md5 = null;
try{
md5 = MessageDigest.getInstance("MD5");
}catch (Exception e){
System.out.println(e.toString());
e.printStackTrace();
return "";
}
char[] charArray = inStr.toCharArray();
byte[] byteArray = new byte[charArray.length];
for (int i = 0; i < charArray.length; i++)
byteArray[i] = (byte) charArray[i];
byte[] md5Bytes = md5.digest(byteArray);
StringBuffer hexValue = new StringBuffer();
for (int i = 0; i < md5Bytes.length; i++){
int val = ((int) md5Bytes[i]) & 0xff;
if (val < 16)
hexValue.append("0");
hexValue.append(Integer.toHexString(val));
}
return hexValue.toString();
}
}
编码解码工具
/**
* Copyright (c) 2005-2012 springside.org.cn
*/
package com.bw.portal.common.utils;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.lang3.StringEscapeUtils;
/**
* 封装各种格式的编码解码工具类.
* 1.Commons-Codec的 hex/base64 编码
* 2.自制的base62 编码
* 3.Commons-Lang的xml/html escape
* 4.JDK提供的URLEncoder
*/
public class Encodes {
private static final String DEFAULT_URL_ENCODING = "UTF-8";
private static final char[] BASE62 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".toCharArray();
/**
* Hex编码.
*/
public static String encodeHex(byte[] input) {
return new String(Hex.encodeHex(input));
}
/**
* Hex解码.
*/
public static byte[] decodeHex(String input) {
try {
return Hex.decodeHex(input.toCharArray());
} catch (DecoderException e) {
throw Exceptions.unchecked(e);
}
}
/**
* Base64编码.
*/
public static String encodeBase64(byte[] input) {
return new String(Base64.encodeBase64(input));
}
/**
* Base64编码.
*/
public static String encodeBase64(String input) {
try {
return new String(Base64.encodeBase64(input.getBytes(DEFAULT_URL_ENCODING)));
} catch (UnsupportedEncodingException e) {
return "";
}
}
// /**
// * Base64编码, URL安全(将Base64中的URL非法字符'+'和'/'转为'-'和'_', 见RFC3548).
// */
// public static String encodeUrlSafeBase64(byte[] input) {
// return Base64.encodeBase64URLSafe(input);
// }
/**
* Base64解码.
*/
public static byte[] decodeBase64(String input) {
return Base64.decodeBase64(input.getBytes());
}
/**
* Base64解码.
*/
public static String decodeBase64String(String input) {
try {
return new String(Base64.decodeBase64(input.getBytes()), DEFAULT_URL_ENCODING);
} catch (UnsupportedEncodingException e) {
return "";
}
}
/**
* Base62编码。
*/
public static String encodeBase62(byte[] input) {
char[] chars = new char[input.length];
for (int i = 0; i < input.length; i++) {
chars[i] = BASE62[((input[i] & 0xFF) % BASE62.length)];
}
return new String(chars);
}
/**
* Html 转码.
*/
public static String escapeHtml(String html) {
return StringEscapeUtils.escapeHtml4(html);
}
/**
* Html 解码.
*/
public static String unescapeHtml(String htmlEscaped) {
return StringEscapeUtils.unescapeHtml4(htmlEscaped);
}
/**
* Xml 转码.
*/
public static String escapeXml(String xml) {
return StringEscapeUtils.escapeXml10(xml);
}
/**
* Xml 解码.
*/
public static String unescapeXml(String xmlEscaped) {
return StringEscapeUtils.unescapeXml(xmlEscaped);
}
/**
* URL 编码, Encode默认为UTF-8.
*/
public static String urlEncode(String part) {
try {
return URLEncoder.encode(part, DEFAULT_URL_ENCODING);
} catch (UnsupportedEncodingException e) {
throw Exceptions.unchecked(e);
}
}
/**
* URL 解码, Encode默认为UTF-8.
*/
public static String urlDecode(String part) {
try {
return URLDecoder.decode(part, DEFAULT_URL_ENCODING);
} catch (UnsupportedEncodingException e) {
throw Exceptions.unchecked(e);
}
}
}
