blade.plugin.sql2o.kit.MD5 Maven / Gradle / Ivy
package blade.plugin.sql2o.kit;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* MD5加密
*
* @author biezhi
* @since 1.0
*/
public class MD5 {
/** 全局数组 **/
private final static String[] strDigits = { "0", "1", "2", "3", "4", "5",
"6", "7", "8", "9", "A", "B", "C", "D", "E", "F" };
/**
* 返回形式为数字跟字符串
*
* @param bByte
* @return
*/
private static String byteAsArrayString(byte bByte) {
int iRet = bByte;
if (iRet < 0) {
iRet += 256;
}
int iD1 = iRet / 16;
int iD2 = iRet % 16;
return strDigits[iD1] + strDigits[iD2];
}
/**
* 转换字节数组为16进制字串
*
* @param bByte
* @return
*/
private static String byteAsString(byte[] bByte) {
StringBuffer sBuffer = new StringBuffer();
for (int i = 0; i < bByte.length; i++) {
sBuffer.append(byteAsArrayString(bByte[i]));
}
return sBuffer.toString();
}
/**
* MD5加密
*
* @param str
* 待加密的字符串
* @return
*/
public static String create(String str) {
String result = null;
try {
result = new String(str);
MessageDigest md = MessageDigest.getInstance("MD5");
result = byteAsString(md.digest(str.getBytes()));
} catch (NoSuchAlgorithmException ex) {
ex.printStackTrace();
}
return result;
}
/**
* MD5加密
*
* @param str 待加密的字符串
* @param lowerCase 大小写
* @return
*/
public static String create(String str, boolean lowerCase) {
String result = null;
try {
result = new String(str);
MessageDigest md = MessageDigest.getInstance("MD5");
result = byteAsString(md.digest(str.getBytes()));
if (lowerCase) {
result = result.toLowerCase();
}
} catch (NoSuchAlgorithmException ex) {
ex.printStackTrace();
}
return result;
}
}