src/main/java/com/keuin/kbackupfabric/util/BytesUtil.java


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package com.keuin.kbackupfabric.util;

import java.nio.charset.StandardCharsets;

public class BytesUtil {
    private static final byte[] HEX_ARRAY = "0123456789ABCDEF".getBytes(StandardCharsets.US_ASCII);
    public static String bytesToHex(byte[] bytes) {
        byte[] hexChars = new byte[bytes.length * 2];
        for (int j = 0; j < bytes.length; j++) {
            int v = bytes[j] & 0xFF;
            hexChars[j * 2] = HEX_ARRAY[v >>> 4];
            hexChars[j * 2 + 1] = HEX_ARRAY[v & 0x0F];
        }
        return new String(hexChars, StandardCharsets.UTF_8);
    }
}