Here you can find the source of toMinimalByteArray(BigInteger value)
Parameter | Description |
---|---|
value | the <tt>BigInteger</tt> value to be converted to a byte array |
public static byte[] toMinimalByteArray(BigInteger value)
//package com.java2s; import java.math.BigInteger; public class Main { /**// w w w .j a v a2 s .c o m * Return the value of <tt>big</tt> as a byte array. Although BigInteger * has such a method, it uses an extra bit to indicate the sign of the * number. For elliptic curve cryptography, the numbers usually are * positive. Thus, this helper method returns a byte array of minimal * length, ignoring the sign of the number. * * @param value the <tt>BigInteger</tt> value to be converted to a byte * array * @return the value <tt>big</tt> as byte array */ public static byte[] toMinimalByteArray(BigInteger value) { byte[] valBytes = value.toByteArray(); if ((valBytes.length == 1) || (value.bitLength() & 0x07) != 0) { return valBytes; } byte[] result = new byte[value.bitLength() >> 3]; System.arraycopy(valBytes, 1, result, 0, result.length); return result; } }