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HexUtil.java
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49 lines (44 loc) · 1.18 KB
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/*
* Copyright 2014-2023 The GmSSL Project. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
package org.gmssl;
import java.math.BigInteger;
/**
* @author yongfeili
* @email 290836576@qq.com
* @date 2023/09/07
* @description Hex uitl
*/
public class HexUtil {
/**
* convert byte array to hex string
* @param btArr
* @return String
*/
public static String byteToHex(byte[] btArr) {
BigInteger bigInteger = new BigInteger(1, btArr);
return bigInteger.toString(16);
}
/**
* convert hex string to byte array
* @param hexString
* @return byte[]
*/
public static byte[] hexToByte(String hexString) {
byte[] byteArray = new BigInteger(hexString, 16)
.toByteArray();
if (byteArray[0] == 0) {
byte[] output = new byte[byteArray.length - 1];
System.arraycopy(
byteArray, 1, output,
0, output.length);
return output;
}
return byteArray;
}
}