com.ibm.crypto.fips.provider

Class ECUtils

java.lang.Object

com.ibm.crypto.fips.provider.ECUtils

public final class ECUtils
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	EC_CURVE_COFACTOR_1_Y2_X3
static int	EC_CURVE_DEFAULT
static int	EC_CURVE_KOBLITZ
static int	EC_SIZE_192
static int	EC_SIZE_224
static int	EC_SIZE_256
static int	EC_SIZE_384
static int	EC_SIZE_521

Constructor Summary

Constructors

Constructor and Description
ECUtils()

Method Summary

Methods

Modifier and Type	Method and Description
protected static java.lang.String	curveAsString(java.security.spec.EllipticCurve toString)
protected static java.lang.String	fieldAsString(java.security.spec.ECField toString)
static PrimeCurve	getCurve(PrimeField field, java.math.BigInteger a, java.math.BigInteger b, byte[] seed, int curveType)
static PrimeCurve	getCurve(PrimeField field, java.math.BigInteger a, java.math.BigInteger b, int curveType)
static PrimeField	getField(int size, java.math.BigInteger p, boolean nistPrime)
static PrimeCurve	getPrimeCurve(java.security.spec.EllipticCurve ec)
static java.security.spec.ECParameterSpec	getPrimeParameterSpec(java.security.spec.ECParameterSpec params)
static boolean	isNistPrime(java.math.BigInteger p)
protected static java.lang.String	pointAsString(java.security.spec.ECPoint toString)

Methods inherited from class java.lang.Object

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

Field Detail

EC_SIZE_192

public static final int EC_SIZE_192

See Also:

Constant Field Values

EC_SIZE_224

public static final int EC_SIZE_224

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Constant Field Values

EC_SIZE_256

public static final int EC_SIZE_256

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Constant Field Values

EC_SIZE_384

public static final int EC_SIZE_384

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Constant Field Values

EC_SIZE_521

public static final int EC_SIZE_521

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Constant Field Values

EC_CURVE_COFACTOR_1_Y2_X3

public static final int EC_CURVE_COFACTOR_1_Y2_X3

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Constant Field Values

EC_CURVE_KOBLITZ

public static final int EC_CURVE_KOBLITZ

See Also:

Constant Field Values

EC_CURVE_DEFAULT

public static final int EC_CURVE_DEFAULT

See Also:

Constant Field Values

Constructor Detail

ECUtils

public ECUtils()

Method Detail

pointAsString

protected static java.lang.String pointAsString(java.security.spec.ECPoint toString)

Parameters:

toString - ECPoint to convert to String

Returns:

ECPoint as a String

curveAsString

protected static java.lang.String curveAsString(java.security.spec.EllipticCurve toString)

fieldAsString

protected static java.lang.String fieldAsString(java.security.spec.ECField toString)

getField

public static PrimeField getField(int size,
                  java.math.BigInteger p,
                  boolean nistPrime)

isNistPrime

public static boolean isNistPrime(java.math.BigInteger p)

getCurve

public static PrimeCurve getCurve(PrimeField field,
                  java.math.BigInteger a,
                  java.math.BigInteger b,
                  int curveType)

getCurve

public static PrimeCurve getCurve(PrimeField field,
                  java.math.BigInteger a,
                  java.math.BigInteger b,
                  byte[] seed,
                  int curveType)

getPrimeCurve

public static PrimeCurve getPrimeCurve(java.security.spec.EllipticCurve ec)

getPrimeParameterSpec

public static java.security.spec.ECParameterSpec getPrimeParameterSpec(java.security.spec.ECParameterSpec params)