com.entrust.toolkit.security.arithmetic.fields

Interface Field

All Known Implementing Classes:

GFp, PolynomialField

Deprecated.

since 8.0; use Entrust's new EC architecture com.entrust.toolkit.security.crypto.ec instead

public interface Field

Defines methods related to the mathematical structure of a field.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj) Deprecated. Compares two fields for equality.
int	getFieldSize() Deprecated. Returns the field size in bits.
java.lang.String	getFieldType() Deprecated. Returns the field type.
java.math.BigInteger	getNumberOfElements() Deprecated. Returns the number of elements in this field.
FieldElement	getOneElement() Deprecated. Returns the One Element.
FieldElement	getZeroElement() Deprecated. Returns the Zero Element.
ASN1Object	toASN1Object() Deprecated. Returns an ASN.1 structure representing this field.
java.lang.String	toString() Deprecated. Returns the string representation.

Method Detail

getZeroElement

FieldElement getZeroElement()

Deprecated.

Returns the Zero Element.

The Zero Element is the identity element with respect to the additive group in this field.

Returns:

the Zero Element

getOneElement

FieldElement getOneElement()

Deprecated.

Returns the One Element.

The One Element is the identity element with respect to the multiplicative group in this field.

Returns:

the One Element

getNumberOfElements

java.math.BigInteger getNumberOfElements()

Deprecated.

Returns the number of elements in this field.

Returns:

the number of elements in this field

getFieldType

java.lang.String getFieldType()

Deprecated.

Returns the field type.

The field type is a string that describes the field in human readable form.

Returns:

the field type as String

toASN1Object

ASN1Object toASN1Object()

Deprecated.

Returns an ASN.1 structure representing this field.

Although the ASN.1 encoding is not inherent in the field, this method is quite useful when used with elliptic curve cryptography (ECC) operations.

Returns:

this field as an ASN.1 structure

equals

boolean equals(java.lang.Object obj)

Deprecated.

Compares two fields for equality.

Two fields are equal if their field types and their representations are equal.

Overrides:

equals in class java.lang.Object

Parameters:

obj - the reference field with which to compare

Returns:

true if this field is equal to obj, false otherwise

toString

java.lang.String toString()

Deprecated.

Returns the string representation.

Overrides:

toString in class java.lang.Object

Returns:

the string

getFieldSize

int getFieldSize()

Deprecated.

Returns the field size in bits.

Note: For prime finite field F_p, size of prime p in bits is returned. For characteristic 2 finite fields F_2^m, m is returned.

Returns:

the field size in bits

Since:

7.2 SP2