org.whispersystems.libsignal.util.Hex Maven / Gradle / Ivy
/**
* Copyright (C) 2014-2016 Open Whisper Systems
*
* Licensed according to the LICENSE file in this repository.
*/
package org.whispersystems.libsignal.util;
import java.io.IOException;
/**
* Utility for generating hex dumps.
*/
public class Hex {
private final static char[] HEX_DIGITS = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
};
public static String toString(byte[] bytes) {
return toString(bytes, 0, bytes.length);
}
public static String toString(byte[] bytes, int offset, int length) {
StringBuffer buf = new StringBuffer();
for (int i = 0; i < length; i++) {
appendHexChar(buf, bytes[offset + i]);
buf.append(", ");
}
return buf.toString();
}
public static String toStringCondensed(byte[] bytes) {
StringBuffer buf = new StringBuffer();
for (int i=0;i> 1];
for (int i = 0, j = 0; j < len; i++) {
int f = Character.digit(data[j], 16) << 4;
j++;
f = f | Character.digit(data[j], 16);
j++;
out[i] = (byte) (f & 0xFF);
}
return out;
}
private static void appendHexChar(StringBuffer buf, int b) {
buf.append("(byte)0x");
buf.append(HEX_DIGITS[(b >> 4) & 0xf]);
buf.append(HEX_DIGITS[b & 0xf]);
}
}