Bouncy Castle Provider 1.77 · org.bouncycastle.math.ec.LongArray

Modifier and Type	Field and Description
pack-priv static final byte[]	bitLengths
private static final short[]	INTERLEAVE2_TABLE
private static final int[]	INTERLEAVE3_TABLE
private static final int[]	INTERLEAVE4_TABLE
private static final int[]	INTERLEAVE5_TABLE
private static final long[]	INTERLEAVE7_TABLE
private long[]	m_ints
private static final String	ZEROES

Access	Constructor and Description
public	LongArray(int intLen)
public	LongArray(long[] ints)
public	LongArray(long[] ints, int off, int len)
public	LongArray(BigInteger bigInt)

Method Summary

Modifier and Type	Method and Description
private static void	add(long[] x, int xOff, long[] y, int yOff, int count)
private static void	add(long[] x, int xOff, long[] y, int yOff, long[] z, int zOff, int count)
private static void	addBoth(long[] x, int xOff, long[] y1, int y1Off, long[] y2, int y2Off, int count)
public LongArray	addOne()
private void	addShiftedByBitsSafe(LongArray other, int otherDegree, int bits)
public void	addShiftedByWords(LongArray other, int words)
private static long	addShiftedDown(long[] x, int xOff, long[] y, int yOff, int count, int shift)
private static long	addShiftedUp(long[] x, int xOff, long[] y, int yOff, int count, int shift)
private static int	bitLength(long w)
public Object	clone() Overrides java.lang.Object.clone. Creates and returns a copy of this object.
pack-priv void	copyTo(long[] z, int zOff)
public int	degree()
private int	degreeFrom(int limit)
private static void	distribute(long[] x, int src, int dst1, int dst2, int count)
public boolean	equals(Object the reference object with which to compare. o) Overrides java.lang.Object.equals. Indicates whether some other object is "equal to" this one.
private static void	flipBit(long[] buf, int off, int n)
private static void	flipVector(long[] x, int xOff, long[] y, int yOff, int yLen, int bits)
private static void	flipWord(long[] buf, int off, int bit, long word)
public int	getLength()
public int	getUsedLength()
public int	getUsedLengthFrom(int from)
public int	hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value for the object.
private static void	interleave(long[] x, int xOff, long[] z, int zOff, int count, int width)
private static long	interleave2_32to64(int x)
private static void	interleave2_n(long[] x, int xOff, long[] z, int zOff, int count, int rounds)
private static long	interleave2_n(long x, int rounds)
private static void	interleave3(long[] x, int xOff, long[] z, int zOff, int count)
private static long	interleave3(long x)
private static long	interleave3_13to65(int x)
private static long	interleave3_21to63(int x)
private static long	interleave4_16to64(int x)
private static void	interleave5(long[] x, int xOff, long[] z, int zOff, int count)
private static long	interleave5(long x)
private static void	interleave7(long[] x, int xOff, long[] z, int zOff, int count)
private static long	interleave7(long x)
public boolean	isOne()
public boolean	isZero()
public LongArray	modInverse(int m, int[] ks)
public LongArray	modMultiply(LongArray other, int m, int[] ks)
public LongArray	modMultiplyAlt(LongArray other, int m, int[] ks)
public LongArray	modMultiplyLD(LongArray other, int m, int[] ks)
public LongArray	modReduce(int m, int[] ks)
public LongArray	modSquare(int m, int[] ks)
public LongArray	modSquareN(int n, int m, int[] ks)
public LongArray	multiply(LongArray other, int m, int[] ks)
private static void	multiplyWord(long a, long[] b, int bLen, long[] c, int cOff)
public void	reduce(int m, int[] ks)
private static void	reduceBit(long[] buf, int off, int bit, int m, int[] ks)
private static void	reduceBitWise(long[] buf, int off, int bitlength, int m, int[] ks)
private static int	reduceInPlace(long[] buf, int off, int len, int m, int[] ks)
private static LongArray	reduceResult(long[] buf, int off, int len, int m, int[] ks)
private static void	reduceVectorWise(long[] buf, int off, int len, int words, int m, int[] ks)
private static void	reduceWord(long[] buf, int off, int bit, long word, int m, int[] ks)
private static void	reduceWordWise(long[] buf, int off, int len, int toBit, int m, int[] ks)
private long[]	resizedInts(int newLen)
private static long	shiftUp(long[] x, int xOff, int count, int shift)
private static long	shiftUp(long[] x, int xOff, long[] z, int zOff, int count, int shift)
public LongArray	square(int m, int[] ks)
private static void	squareInPlace(long[] x, int xLen, int m, int[] ks)
private static boolean	testBit(long[] buf, int off, int n)
public boolean	testBitZero()
public BigInteger	toBigInteger()
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.

Inherited from java.lang.Object:: finalize getClass notify notifyAll wait wait wait

bitLengths	back to summary
pack-priv static final byte[] bitLengths

INTERLEAVE2_TABLE	back to summary
private static final short[] INTERLEAVE2_TABLE

INTERLEAVE3_TABLE	back to summary
private static final int[] INTERLEAVE3_TABLE

INTERLEAVE4_TABLE	back to summary
private static final int[] INTERLEAVE4_TABLE

INTERLEAVE5_TABLE	back to summary
private static final int[] INTERLEAVE5_TABLE

INTERLEAVE7_TABLE	back to summary
private static final long[] INTERLEAVE7_TABLE

m_ints	back to summary
private long[] m_ints

ZEROES	back to summary
private static final String ZEROES

LongArray	back to summary
public LongArray(int intLen)

LongArray	back to summary
public LongArray(long[] ints)

LongArray	back to summary
public LongArray(long[] ints, int off, int len)

LongArray	back to summary
public LongArray(BigInteger bigInt)

Method Detail

add	back to summary
private static void add(long[] x, int xOff, long[] y, int yOff, int count)

add	back to summary
private static void add(long[] x, int xOff, long[] y, int yOff, long[] z, int zOff, int count)

addBoth	back to summary
private static void addBoth(long[] x, int xOff, long[] y1, int y1Off, long[] y2, int y2Off, int count)

addOne	back to summary
public LongArray addOne()

addShiftedByBitsSafe	back to summary
private void addShiftedByBitsSafe(LongArray other, int otherDegree, int bits)

addShiftedByWords	back to summary
public void addShiftedByWords(LongArray other, int words)

addShiftedDown	back to summary
private static long addShiftedDown(long[] x, int xOff, long[] y, int yOff, int count, int shift)

addShiftedUp	back to summary
private static long addShiftedUp(long[] x, int xOff, long[] y, int yOff, int count, int shift)

bitLength	back to summary
private static int bitLength(long w)

clone back to summary

clone	back to summary
public Object clone() Overrides java.lang.Object.clone. Doc from java.lang.Object.clone. Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object `x`, the expression: x.clone() != x will be true, and that the expression: x.clone().getClass() == x.getClass() will be `true`, but these are not absolute requirements. While it is typically the case that: x.clone().equals(x) will be `true`, this is not an absolute requirement. By convention, the returned object should be obtained by calling `super.clone`. If a class and all of its superclasses (except `Object`) obey this convention, it will be the case that `x.clone().getClass() == x.getClass()`. By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by `super.clone` before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by `super.clone` need to be modified. Returns:Object a clone of this instance.

public Object clone()

Overrides java.lang.Object.clone.

Doc from java.lang.Object.clone.

Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object x, the expression:

x.clone() != x

will be true, and that the expression:

x.clone().getClass() == x.getClass()

will be true, but these are not absolute requirements. While it is typically the case that:

x.clone().equals(x)

will be true, this is not an absolute requirement.

By convention, the returned object should be obtained by calling super.clone. If a class and all of its superclasses (except Object) obey this convention, it will be the case that x.clone().getClass() == x.getClass().

By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by super.clone before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by super.clone need to be modified.

Returns:Object: a clone of this instance.

copyTo	back to summary
pack-priv void copyTo(long[] z, int zOff)

degree	back to summary
public int degree()

degreeFrom	back to summary
private int degreeFrom(int limit)

distribute	back to summary
private static void distribute(long[] x, int src, int dst1, int dst2, int count)

equals back to summary

equals	back to summary
public boolean equals(Object o) Overrides java.lang.Object.equals. Doc from java.lang.Object.equals. Indicates whether some other object is "equal to" this one. The `equals` method implements an equivalence relation on non-null object references: It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`. It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`. It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`. It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified. For any non-null reference value `x`, `x.equals(null)` should return `false`. An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes. Parameters o:Object the reference object with which to compare. Returns:boolean `true` if this object is the same as the obj argument; `false` otherwise.

public boolean equals(Object o)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters

o:Object: the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

flipBit	back to summary
private static void flipBit(long[] buf, int off, int n)

flipVector	back to summary
private static void flipVector(long[] x, int xOff, long[] y, int yOff, int yLen, int bits)

flipWord	back to summary
private static void flipWord(long[] buf, int off, int bit, long word)

getLength	back to summary
public int getLength()

getUsedLength	back to summary
public int getUsedLength()

getUsedLengthFrom	back to summary
public int getUsedLengthFrom(int from)

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides java.lang.Object.hashCode. Doc from java.lang.Object.hashCode. Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by `java.util.HashMap`. The general contract of `hashCode` is: Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables. Returns:int a hash code value for this object.

public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Returns:int: a hash code value for this object.

interleave	back to summary
private static void interleave(long[] x, int xOff, long[] z, int zOff, int count, int width)

interleave2_32to64	back to summary
private static long interleave2_32to64(int x)

interleave2_n	back to summary
private static void interleave2_n(long[] x, int xOff, long[] z, int zOff, int count, int rounds)

interleave2_n	back to summary
private static long interleave2_n(long x, int rounds)

interleave3	back to summary
private static void interleave3(long[] x, int xOff, long[] z, int zOff, int count)

interleave3	back to summary
private static long interleave3(long x)

interleave3_13to65	back to summary
private static long interleave3_13to65(int x)

interleave3_21to63	back to summary
private static long interleave3_21to63(int x)

interleave4_16to64	back to summary
private static long interleave4_16to64(int x)

interleave5	back to summary
private static void interleave5(long[] x, int xOff, long[] z, int zOff, int count)

interleave5	back to summary
private static long interleave5(long x)

interleave7	back to summary
private static void interleave7(long[] x, int xOff, long[] z, int zOff, int count)

interleave7	back to summary
private static long interleave7(long x)

isOne	back to summary
public boolean isOne()

isZero	back to summary
public boolean isZero()

modInverse	back to summary
public LongArray modInverse(int m, int[] ks)

modMultiply	back to summary
public LongArray modMultiply(LongArray other, int m, int[] ks)

modMultiplyAlt	back to summary
public LongArray modMultiplyAlt(LongArray other, int m, int[] ks)

modMultiplyLD	back to summary
public LongArray modMultiplyLD(LongArray other, int m, int[] ks)

modReduce	back to summary
public LongArray modReduce(int m, int[] ks)

modSquare	back to summary
public LongArray modSquare(int m, int[] ks)

modSquareN	back to summary
public LongArray modSquareN(int n, int m, int[] ks)

multiply	back to summary
public LongArray multiply(LongArray other, int m, int[] ks)

multiplyWord	back to summary
private static void multiplyWord(long a, long[] b, int bLen, long[] c, int cOff)

reduce	back to summary
public void reduce(int m, int[] ks)

reduceBit	back to summary
private static void reduceBit(long[] buf, int off, int bit, int m, int[] ks)

reduceBitWise	back to summary
private static void reduceBitWise(long[] buf, int off, int bitlength, int m, int[] ks)

reduceInPlace	back to summary
private static int reduceInPlace(long[] buf, int off, int len, int m, int[] ks)

reduceResult	back to summary
private static LongArray reduceResult(long[] buf, int off, int len, int m, int[] ks)

reduceVectorWise	back to summary
private static void reduceVectorWise(long[] buf, int off, int len, int words, int m, int[] ks)

reduceWord	back to summary
private static void reduceWord(long[] buf, int off, int bit, long word, int m, int[] ks)

reduceWordWise	back to summary
private static void reduceWordWise(long[] buf, int off, int len, int toBit, int m, int[] ks)

resizedInts	back to summary
private long[] resizedInts(int newLen)

shiftUp	back to summary
private static long shiftUp(long[] x, int xOff, int count, int shift)

shiftUp	back to summary
private static long shiftUp(long[] x, int xOff, long[] z, int zOff, int count, int shift)

square	back to summary
public LongArray square(int m, int[] ks)

squareInPlace	back to summary
private static void squareInPlace(long[] x, int xLen, int m, int[] ks)

testBit	back to summary
private static boolean testBit(long[] buf, int off, int n)

testBitZero	back to summary
public boolean testBitZero()

toBigInteger	back to summary
public BigInteger toBigInteger()

toString

back to summary

public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object.

Returns:String: a string representation of the object.

pack-priv Class LongArray

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail