edu.vt.middleware.crypt.util
Class ECUtils

java.lang.Object
  edu.vt.middleware.crypt.util.ECUtils

public final class ECUtils
extends Object

Elliptic curve cryptography utilty methods.

Version:

$Revision: 2744 $

Author:

Middleware Services

Method Summary

static ECParameterSpec	fromNamedCurve(org.bouncycastle.asn1.DERObjectIdentifier curveOid) Gets an elliptic curve domain parameter specification from a named curve OID.
static ECParameterSpec	readEncodedParams(org.bouncycastle.asn1.ASN1Sequence seq) Reads ASN.1 encoded EC domain parameters as defined by section C.2 of SEC 1: Elliptic Curve Cryptography, www.secg.org/collateral/sec1_final.pdf.
static ECPrivateKeySpec	readEncodedPrivateKey(org.bouncycastle.asn1.ASN1Sequence seq) Reads a ASN.1 encoded EC private key according the structure defined in sections C.4 and C.2 of SEC 1: Elliptic Curve Cryptography, www.secg.org/collateral/sec1_final.pdf.

Methods inherited from class java.lang.Object

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

Method Detail

readEncodedPrivateKey

public static ECPrivateKeySpec readEncodedPrivateKey(org.bouncycastle.asn1.ASN1Sequence seq)

Reads a ASN.1 encoded EC private key according the structure defined in sections C.4 and C.2 of SEC 1: Elliptic Curve Cryptography, www.secg.org/collateral/sec1_final.pdf.

Parameters:

seq - ASN.1 encoded sequence of EC private key parameters.

Returns:

Constructed EC key parameter specification.

readEncodedParams

public static ECParameterSpec readEncodedParams(org.bouncycastle.asn1.ASN1Sequence seq)

Reads ASN.1 encoded EC domain parameters as defined by section C.2 of SEC 1: Elliptic Curve Cryptography, www.secg.org/collateral/sec1_final.pdf.

Parameters:

seq - ASN.1 sequence of EC domain parameters.

Returns:

Constructed EC domain parameter specification.

fromNamedCurve

public static ECParameterSpec fromNamedCurve(org.bouncycastle.asn1.DERObjectIdentifier curveOid)

Gets an elliptic curve domain parameter specification from a named curve OID.

Parameters:

curveOid - Named elliptic curve object identifier.

Returns:

Domain parameters for named curve.