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51 lines
1.7 KiB
Java
51 lines
1.7 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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Extracted from commons-codec
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*/
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package com.coremedia.iso;
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import java.io.ByteArrayOutputStream;
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/**
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* Converts hexadecimal Strings.
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*/
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public class Hex {
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private static final char[] DIGITS = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
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public static String encodeHex(byte[] data) {
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int l = data.length;
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char[] out = new char[l << 1];
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// two characters form the hex value.
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for (int i = 0, j = 0; i < l; i++) {
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out[j++] = DIGITS[(0xF0 & data[i]) >>> 4];
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out[j++] = DIGITS[0x0F & data[i]];
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}
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return new String(out);
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}
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public static byte[] decodeHex(String hexString) {
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ByteArrayOutputStream bas = new ByteArrayOutputStream();
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for (int i = 0; i < hexString.length(); i += 2) {
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int b = Integer.parseInt(hexString.substring(i, i + 2), 16);
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bas.write(b);
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}
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return bas.toByteArray();
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}
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}
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