iaik.security.ecc.math.field
Interface PrimeField

All Superinterfaces:

Field

public interface PrimeField

extends Field

Extension to the field interface containing prime field specific constants.

Field Summary

static int	PRIME_FIELD_ID Id of a prime field.
static java.lang.String	PRIME_FIELD_OID Objcet Identifier for a prime field for ASN.1 encoding.

Method Summary

java.math.BigInteger	getModulus() The modulus of the prime field.
void	half(FieldElement a) Calculates the half of a prime field value.
FieldElement	newElement(java.math.BigInteger v) Creates a new element over this field.

Methods inherited from interface iaik.security.ecc.math.field.Field

add, getFieldFactory, getFieldId, getONEelement, getSize, getZEROelement, invert, multiply, negate, newElement, square, toASN1Object

Field Detail

PRIME_FIELD_ID

public static final int PRIME_FIELD_ID

Id of a prime field.

See Also:

Field.getFieldId(), Constant Field Values

PRIME_FIELD_OID

public static final java.lang.String PRIME_FIELD_OID

Objcet Identifier for a prime field for ASN.1 encoding.

See Also:

Constant Field Values

Method Detail

half

public void half(FieldElement a)

Calculates the half of a prime field value. ATTENTION: you must provide a field element of the correct field.

Parameters:

a - the field element to be inverted.

newElement

public FieldElement newElement(java.math.BigInteger v)

Creates a new element over this field. ATTENTION: you must provide the correct parameter type, otherwise you will get garbage.

Parameters:

v - the value of the element to be created

Returns:

a new element of this field with the specified value.

getModulus

public java.math.BigInteger getModulus()

The modulus of the prime field.

Returns:

the modulus of this prime field.