cn.ipokerface.weixin.utils.HexUtils Maven / Gradle / Ivy
package cn.ipokerface.weixin.utils;
/**
* Created by PokerFace
* Create Date 2019-12-28.
* Email: [email protected]
* Version 1.0.0
*
* Description:
*/
public class HexUtils {
/**
* Used to build output as Hex
*/
private static final char[] DIGITS_LOWER = { '0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
/**
* Used to build output as Hex
*/
private static final char[] DIGITS_UPPER = { '0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
private static char[] encodeHex(final byte[] data, final char[] toDigits) {
final int l = data.length;
final char[] out = new char[l << 1];
// two characters form the hex value.
for (int i = 0, j = 0; i < l; i++) {
out[j++] = toDigits[(0xF0 & data[i]) >>> 4];
out[j++] = toDigits[0x0F & data[i]];
}
return out;
}
public static String encodeHexString(final byte[] data) {
return new String(encodeHex(data, true));
}
public static char[] encodeHex(final byte[] data, final boolean toLowerCase) {
return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
}
}