import java.security.MessageDigest;
/** 加密工具*
@author 刘彦青
*
**/
public class EncryptUtil {
/** MD5加密
*
* @param jiami
* 源字符串
* @return 加密后的字符串 */
public final static String md5(String jiami) {
char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
try {
byte[] btInput = jiami.getBytes();
MessageDigest mdInst = MessageDigest.getInstance("MD5");
mdInst.update(btInput);
byte[] md = mdInst.digest();
int j = md.length;
char str[] = new char[j * 2];
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md[i];
str[k++] = hexDigits[byte0 >>> 4 & 0xf];
str[k++] = hexDigits[byte0 & 0xf];
}
return new String(str);
} catch (Exception e) {
throw new RuntimeException(e);
}
}复制代码
private EncryptUtil() {
// 禁止实例化
}
}复制代码
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