com.tencent.kona.sun.security.util.math.intpoly

Class IntegerPolynomial.MutableElement

java.lang.Object

com.tencent.kona.sun.security.util.math.intpoly.IntegerPolynomial.MutableElement

All Implemented Interfaces:

IntegerModuloP, MutableIntegerModuloP

Enclosing class:

IntegerPolynomial

protected class IntegerPolynomial.MutableElement
extends java.lang.Object
implements MutableIntegerModuloP

Nested Class Summary

Nested classes/interfaces inherited from interface com.tencent.kona.sun.security.util.math.IntegerModuloP

IntegerModuloP.MultiplicativeInverser

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MutableElement(long[] limbs, int numAdds)

Method Summary

Modifier and Type	Method and Description
void	conditionalSet(IntegerModuloP b, int set) Set this value to the value of b when set has the value 1.
void	conditionalSwapWith(MutableIntegerModuloP b, int swap) Swap the value of this with the value of b when swap has the value 1.
com.tencent.kona.sun.security.util.math.intpoly.IntegerPolynomial.ImmutableElement	fixed() Return this value as a fixed (immutable) element.
IntegerPolynomial.MutableElement	setAdditiveInverse() Set the value of this element equal to 0 - this.
IntegerPolynomial.MutableElement	setDifference(IntegerModuloP genB) Set the value of this element equal to this - b.
IntegerPolynomial.MutableElement	setProduct(IntegerModuloP genB) Set the value of this element equal to this * b.
IntegerPolynomial.MutableElement	setProduct(SmallValue v) Set the value of this element equal to this * v.
IntegerPolynomial.MutableElement	setSquare() Set the value of this element equal to this * this.
IntegerPolynomial.MutableElement	setSum(IntegerModuloP genB) Set the value of this element equal to this + b.
IntegerPolynomial.MutableElement	setValue(byte[] arr, int offset, int length, byte highByte) Set the value equal to the little-endian unsigned integer stored at the specified position in an array.
IntegerPolynomial.MutableElement	setValue(java.nio.ByteBuffer buf, int length, byte highByte) Set the value equal to the little-endian unsigned integer stored in a buffer.
IntegerPolynomial.MutableElement	setValue(IntegerModuloP v) Set the value of this element equal to the value of the supplied element.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.tencent.kona.sun.security.util.math.IntegerModuloP

add, additiveInverse, addModPowerTwo, addModPowerTwo, asBigInteger, asByteArray, asByteArray, getField, multiplicativeInverse, multiply, mutable, pow, square, subtract

Constructor Detail

MutableElement

protected MutableElement(long[] limbs,
                         int numAdds)

Method Detail

fixed

public com.tencent.kona.sun.security.util.math.intpoly.IntegerPolynomial.ImmutableElement fixed()

Description copied from interface: IntegerModuloP

Return this value as a fixed (immutable) element. This method will copy the underlying representation if the object is mutable.

Specified by:

fixed in interface IntegerModuloP

Returns:

a fixed element with the same value

conditionalSet

public void conditionalSet(IntegerModuloP b,
                           int set)

Description copied from interface: MutableIntegerModuloP

Set this value to the value of b when set has the value 1. No change is made to this element when set has the value 0. The result is undefined when set has a value other than 0 or 1. The set parameter is an int (rather than boolean) to allow the implementation to perform the assignment using branch-free integer arithmetic.

Specified by:

conditionalSet in interface MutableIntegerModuloP

Parameters:

b - the element to conditionally swap with

set - an int that determines whether to set

conditionalSwapWith

public void conditionalSwapWith(MutableIntegerModuloP b,
                                int swap)

Description copied from interface: MutableIntegerModuloP

Swap the value of this with the value of b when swap has the value 1. No change is made to either element when swap has the value 0. The result is undefined when swap has a value other than 0 or 1. The swap parameter is an int (rather than boolean) to allow the implementation to perform the swap using branch-free integer arithmetic.

Specified by:

conditionalSwapWith in interface MutableIntegerModuloP

Parameters:

b - the element to conditionally swap with

swap - an int that determines whether to swap

setValue

public IntegerPolynomial.MutableElement setValue(IntegerModuloP v)

Description copied from interface: MutableIntegerModuloP

Set the value of this element equal to the value of the supplied element. The argument is not modified.

Specified by:

setValue in interface MutableIntegerModuloP

Parameters:

v - the element whose value should be copied to this

Returns:

this

setValue

public IntegerPolynomial.MutableElement setValue(byte[] arr,
                                                 int offset,
                                                 int length,
                                                 byte highByte)

Description copied from interface: MutableIntegerModuloP

Set the value equal to the little-endian unsigned integer stored at the specified position in an array. The range of accepted values is implementation-specific. This method also takes a byte which is interpreted as an additional high-order byte of the number.

Specified by:

setValue in interface MutableIntegerModuloP

Parameters:

arr - an array containing a little-endian unsigned integer

offset - the starting position of the integer

length - the number of bytes to read

highByte - the high-order byte of the number

Returns:

this

setValue

public IntegerPolynomial.MutableElement setValue(java.nio.ByteBuffer buf,
                                                 int length,
                                                 byte highByte)

Description copied from interface: MutableIntegerModuloP

Set the value equal to the little-endian unsigned integer stored in a buffer. The range of accepted values is implementation-specific. This method also takes a byte which is interpreted as an additional high-order byte of the number.

Specified by:

setValue in interface MutableIntegerModuloP

Parameters:

buf - a buffer containing a little-endian unsigned integer

length - the number of bytes to read

highByte - the high-order byte of the number

Returns:

this

setProduct

public IntegerPolynomial.MutableElement setProduct(IntegerModuloP genB)

Description copied from interface: MutableIntegerModuloP

Set the value of this element equal to this * b. The argument is not modified.

Specified by:

setProduct in interface MutableIntegerModuloP

Parameters:

genB - the multiplicand

Returns:

this

setProduct

public IntegerPolynomial.MutableElement setProduct(SmallValue v)

Description copied from interface: MutableIntegerModuloP

Set the value of this element equal to this * v. The argument is not modified.

Specified by:

setProduct in interface MutableIntegerModuloP

Parameters:

v - the small multiplicand

Returns:

this

setSum

public IntegerPolynomial.MutableElement setSum(IntegerModuloP genB)

Description copied from interface: MutableIntegerModuloP

Set the value of this element equal to this + b. The argument is not modified.

Specified by:

setSum in interface MutableIntegerModuloP

Parameters:

genB - the sumand

Returns:

this

setDifference

public IntegerPolynomial.MutableElement setDifference(IntegerModuloP genB)

Description copied from interface: MutableIntegerModuloP

Set the value of this element equal to this - b. The argument is not modified.

Specified by:

setDifference in interface MutableIntegerModuloP

Parameters:

genB - the subtrahend

Returns:

this

setSquare

public IntegerPolynomial.MutableElement setSquare()

Description copied from interface: MutableIntegerModuloP

Set the value of this element equal to this * this.

Specified by:

setSquare in interface MutableIntegerModuloP

Returns:

this

setAdditiveInverse

public IntegerPolynomial.MutableElement setAdditiveInverse()

Description copied from interface: MutableIntegerModuloP

Set the value of this element equal to 0 - this.

Specified by:

setAdditiveInverse in interface MutableIntegerModuloP

Returns:

this