org.spongycastle.pqc.crypto.ntru

Class IndexGenerator.BitString

java.lang.Object

org.spongycastle.pqc.crypto.ntru.IndexGenerator.BitString

Enclosing class:

IndexGenerator

public static class IndexGenerator.BitString
extends java.lang.Object

Represents a string of bits and supports appending, reading the head, and reading the tail.

Constructor Summary

Constructors

Constructor and Description
BitString()

Method Summary

Modifier and Type	Method and Description
void	appendBits(byte b) Appends all bits in a byte to the end of the bit string.
byte[]	getBytes()
int	getLeadingAsInt(int numBits) Returns up to 32 bits from the beginning of the bit string.
IndexGenerator.BitString	getTrailing(int numBits) Returns the last numBits bits from the end of the bit string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BitString

public BitString()

Method Detail

appendBits

public void appendBits(byte b)

Appends all bits in a byte to the end of the bit string.

Parameters:

b - a byte

getTrailing

public IndexGenerator.BitString getTrailing(int numBits)

Returns the last numBits bits from the end of the bit string.

Parameters:

numBits - number of bits

Returns:

a new BitString of length numBits

getLeadingAsInt

public int getLeadingAsInt(int numBits)

Returns up to 32 bits from the beginning of the bit string.

Parameters:

numBits - number of bits

Returns:

an int whose lower numBits bits are the beginning of the bit string

getBytes

public byte[] getBytes()