OpenJDK 27 · sun.security.util.math.IntegerFieldModuloP

Method Summary

Modifier and Type	Method and Description
public ImmutableIntegerModuloP	Returns: the additive identity element get0() Get the additive identity element 0
public ImmutableIntegerModuloP	Returns: the multiplicative identity element get1() Get the multiplicative identity element 1
public ImmutableIntegerModuloP	Returns: the field element corresponding to v getElement(BigInteger a BigInteger value v) Get the field element equivalent to the supplied BigInteger value.
public default ImmutableIntegerModuloP	Returns: the field element corresponding to v getElement(byte[] an array containing a little-endian unsigned integer v) Get a field element from a little-endian unsigned integer stored in an array.
public ImmutableIntegerModuloP	Returns: the field element corresponding to the bytes at the specified position getElement(byte[] an array containing a little-endian unsigned integer v, int the starting position of the integer offset, int the number of bytes to read length, byte the high-order byte of the number highByte) Get a field element from a little-endian unsigned integer stored at the specified position in an array.
public BigInteger	Returns: the size of the field. getSize() Get the size of the field as a BigInteger.
public SmallValue	getSmallValue(int the small integer value v) Get a "small" value according to this implementation.

Method Detail

get0	back to summary
public ImmutableIntegerModuloP get0() Get the additive identity element 0 Returns:ImmutableIntegerModuloP the additive identity element

get0

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public ImmutableIntegerModuloP get0()

Get the additive identity element 0

Returns:ImmutableIntegerModuloP: the additive identity element

get1	back to summary
public ImmutableIntegerModuloP get1() Get the multiplicative identity element 1 Returns:ImmutableIntegerModuloP the multiplicative identity element

get1

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public ImmutableIntegerModuloP get1()

Get the multiplicative identity element 1

Returns:ImmutableIntegerModuloP: the multiplicative identity element

getElement	back to summary
public ImmutableIntegerModuloP getElement(BigInteger v) Get the field element equivalent to the supplied BigInteger value. The supplied value may be negative or larger than the modulus that defines the field. Parameters v:BigInteger a BigInteger value Returns:ImmutableIntegerModuloP the field element corresponding to v

getElement

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public ImmutableIntegerModuloP getElement(BigInteger v)

Get the field element equivalent to the supplied BigInteger value. The supplied value may be negative or larger than the modulus that defines the field.

Parameters

v:BigInteger: a BigInteger value

Returns:ImmutableIntegerModuloP

the field element corresponding to v

getElement	back to summary
public default ImmutableIntegerModuloP getElement(byte[] v) Get a field element from a little-endian unsigned integer stored in an array. The entire array will be used, and the supplied value may be larger than the modulus that defines the field. The array will not be modified. Parameters v:byte[] an array containing a little-endian unsigned integer Returns:ImmutableIntegerModuloP the field element corresponding to v

getElement

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public default ImmutableIntegerModuloP getElement(byte[] v)

Get a field element from a little-endian unsigned integer stored in an array. The entire array will be used, and the supplied value may be larger than the modulus that defines the field. The array will not be modified.

Parameters

v:byte[]: an array containing a little-endian unsigned integer

Returns:ImmutableIntegerModuloP

the field element corresponding to v

getElement	back to summary
public ImmutableIntegerModuloP getElement(byte[] v, int offset, int length, byte highByte) Get a field element from a little-endian unsigned integer stored at the specified position in an array. The supplied value may be larger than the modulus that defines the field. This method also takes a byte which is interpreted as an additional high-order byte of the number. The array will not be modified. Parameters v:byte[] an array containing a little-endian unsigned integer offset:int the starting position of the integer length:int the number of bytes to read highByte:byte the high-order byte of the number Returns:ImmutableIntegerModuloP the field element corresponding to the bytes at the specified position

getElement

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public ImmutableIntegerModuloP getElement(byte[] v, int offset, int length, byte highByte)

Get a field element from a little-endian unsigned integer stored at the specified position in an array. The supplied value may be larger than the modulus that defines the field. This method also takes a byte which is interpreted as an additional high-order byte of the number. The array will not be modified.

Parameters

v:byte[]: an array containing a little-endian unsigned integer
offset:int: the starting position of the integer
length:int: the number of bytes to read
highByte:byte: the high-order byte of the number

Returns:ImmutableIntegerModuloP

the field element corresponding to the bytes at the specified position

getSize	back to summary
public BigInteger getSize() Get the size of the field as a BigInteger. This size is equal to the prime modulus used to construct the field. Returns:BigInteger the size of the field.

getSize

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public BigInteger getSize()

Get the size of the field as a BigInteger. This size is equal to the prime modulus used to construct the field.

Returns:BigInteger: the size of the field.

getSmallValue	back to summary
public SmallValue getSmallValue(int v) Get a "small" value according to this implementation. This value may be used in optimized forms of some operations to avoid unnecessary calculations. For example, multiplication is much faster when it is known that one of the numbers fits within a single limb. The definition of "small", and the range of accepted values, is implementation-specific. Parameters v:int the small integer value Exceptions IllegalArgumentException: when the value is not small

getSmallValue

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public SmallValue getSmallValue(int v)

Get a "small" value according to this implementation. This value may be used in optimized forms of some operations to avoid unnecessary calculations. For example, multiplication is much faster when it is known that one of the numbers fits within a single limb. The definition of "small", and the range of accepted values, is implementation-specific.

Parameters

v:int: the small integer value

Exceptions

IllegalArgumentException:: when the value is not small

public Interface IntegerFieldModuloP

Method Summary

Method Detail