Package org.spongycastle.jcajce.provider.asymmetric.util

Class ECUtil

java.lang.Object

org.spongycastle.jcajce.provider.asymmetric.util.ECUtil

public class ECUtil
extends Object

utility class for converting jce/jca ECDSA, ECDH, and ECDHC objects into their org.spongycastle.crypto counterparts.

Constructor Summary

Constructors

Constructor	Description
ECUtil()

Method Summary

Modifier and Type	Method	Description
static String	generateKeyFingerprint(ECPoint publicPoint, ECParameterSpec spec)
static AsymmetricKeyParameter	generatePrivateKeyParameter(PrivateKey key)
static AsymmetricKeyParameter	generatePublicKeyParameter(PublicKey key)
static String	getCurveName(ASN1ObjectIdentifier oid)
static ECDomainParameters	getDomainParameters(ProviderConfiguration configuration, X962Parameters params)
static ECDomainParameters	getDomainParameters(ProviderConfiguration configuration, ECParameterSpec params)
static X9ECParameters	getNamedCurveByName(String curveName)
static X9ECParameters	getNamedCurveByOid(ASN1ObjectIdentifier oid)
static ASN1ObjectIdentifier	getNamedCurveOid(String curveName)
static ASN1ObjectIdentifier	getNamedCurveOid(ECParameterSpec ecParameterSpec)
static String	getNameFrom(AlgorithmParameterSpec paramSpec)
static int	getOrderBitLength(ProviderConfiguration configuration, BigInteger order, BigInteger privateValue)
static String	privateKeyToString(String algorithm, BigInteger d, ECParameterSpec spec)
static String	publicKeyToString(String algorithm, ECPoint q, ECParameterSpec spec)

Methods inherited from class java.lang.Object

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

Constructor Details

ECUtil

public ECUtil()

Method Details

getDomainParameters

public static ECDomainParameters getDomainParameters(ProviderConfiguration configuration,
 ECParameterSpec params)

getDomainParameters

public static ECDomainParameters getDomainParameters(ProviderConfiguration configuration,
 X962Parameters params)

generatePublicKeyParameter

public static AsymmetricKeyParameter generatePublicKeyParameter(PublicKey key)
                                                         throws InvalidKeyException

Throws:

InvalidKeyException

generatePrivateKeyParameter

public static AsymmetricKeyParameter generatePrivateKeyParameter(PrivateKey key)
                                                          throws InvalidKeyException

Throws:

InvalidKeyException

getOrderBitLength

public static int getOrderBitLength(ProviderConfiguration configuration,
 BigInteger order,
 BigInteger privateValue)

getNamedCurveOid

public static ASN1ObjectIdentifier getNamedCurveOid(String curveName)

getNamedCurveOid

public static ASN1ObjectIdentifier getNamedCurveOid(ECParameterSpec ecParameterSpec)

getNamedCurveByOid

public static X9ECParameters getNamedCurveByOid(ASN1ObjectIdentifier oid)

getNamedCurveByName

public static X9ECParameters getNamedCurveByName(String curveName)

getCurveName

public static String getCurveName(ASN1ObjectIdentifier oid)

privateKeyToString

public static String privateKeyToString(String algorithm,
 BigInteger d,
 ECParameterSpec spec)

publicKeyToString

public static String publicKeyToString(String algorithm,
 ECPoint q,
 ECParameterSpec spec)

generateKeyFingerprint

public static String generateKeyFingerprint(ECPoint publicPoint,
 ECParameterSpec spec)

getNameFrom

public static String getNameFrom(AlgorithmParameterSpec paramSpec)