【java】SHA256加密工具
SHA256:
/**
* 备用方案 SHA256加密
* @author zx
*/
public class SHA256Util {
public static void main(String[] args) {
System.out.println(getSHA256StrJava("130"));
System.out.println(getSHA256StrJava("130"));
}
public static String getSHA256StrJava(String str) {
MessageDigest messageDigest;
String encodeStr = "";
try {
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;
}
private static String byte2Hex(byte[] bytes) {
StringBuffer stringBuffer = new StringBuffer();
String temp = null;
for (int i = 0; i < bytes.length; i++) {
temp = Integer.toHexString(bytes[i] & 0xFF);
if (temp.length() == 1) {
//1得到一位的进行补0操作
stringBuffer.append("0");
}
stringBuffer.append(temp);
}
return stringBuffer.toString();
}
}