SHA256加密工具类

public class SHA256Util {

/**
* 用java原生的摘要实现SHA256加密
*
* @param str 加密前的报文
* @return
*/
public static String getSHA256String(String str) {
String encodeStr = "";
try {
MessageDigest messageDigest = MessageDigest.getInstance("SHA-256");
messageDigest.update(str.getBytes("UTF-8"));
encodeStr = byte2Hex(messageDigest.digest());
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return encodeStr;
}

/**
* byte[]转为16进制
*
* @param bytes
* @return
*/
private static String byte2Hex(byte[] bytes) {
StringBuffer stringBuffer = new StringBuffer();
for (int i = 0; i < bytes.length; i++) {
String temp = Integer.toHexString(bytes[i] & 0xFF);
if (temp.length() == 1) {
stringBuffer.append("0");
}
stringBuffer.append(temp);
}
return stringBuffer.toString();
}
}
————————————————
版权声明：本文为CSDN博主「一杯苦芥」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/ecjtuhq/java/article/details/83302959