org.bouncycastle.jcajce.provider.asymmetric.util
Class ECUtil

java.lang.Object
  org.bouncycastle.jcajce.provider.asymmetric.util.ECUtil

public class ECUtil

extends java.lang.Object

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

Constructor Summary

ECUtil()

Method Summary

static java.lang.String	generateKeyFingerprint(ECPoint publicPoint, ECParameterSpec spec)
static AsymmetricKeyParameter	generatePrivateKeyParameter(java.security.PrivateKey key)
static AsymmetricKeyParameter	generatePublicKeyParameter(java.security.PublicKey key)
static java.lang.String	getCurveName(ASN1ObjectIdentifier oid)
static ECDomainParameters	getDomainParameters(ProviderConfiguration configuration, ECParameterSpec params)
static ECDomainParameters	getDomainParameters(ProviderConfiguration configuration, X962Parameters params)
static X9ECParameters	getNamedCurveByName(java.lang.String curveName)
static X9ECParameters	getNamedCurveByOid(ASN1ObjectIdentifier oid)
static ASN1ObjectIdentifier	getNamedCurveOid(java.lang.String curveName)
static int	getOrderBitLength(ProviderConfiguration configuration, java.math.BigInteger order, java.math.BigInteger privateValue)
static int	privateKeyHashCode(java.math.BigInteger d, ECParameterSpec spec) Hash code for an EC private scalar derived from the public point and domain parameters.
static java.lang.String	privateKeyToString(java.lang.String algorithm, java.math.BigInteger d, ECParameterSpec spec)
static java.lang.String	publicKeyToString(java.lang.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 Detail

ECUtil

public ECUtil()

Method Detail

getDomainParameters

public static ECDomainParameters getDomainParameters(ProviderConfiguration configuration,
                                                     ECParameterSpec params)

getDomainParameters

public static ECDomainParameters getDomainParameters(ProviderConfiguration configuration,
                                                     X962Parameters params)

getOrderBitLength

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

generatePublicKeyParameter

public static AsymmetricKeyParameter generatePublicKeyParameter(java.security.PublicKey key)
                                                         throws java.security.InvalidKeyException

Throws:

java.security.InvalidKeyException

generatePrivateKeyParameter

public static AsymmetricKeyParameter generatePrivateKeyParameter(java.security.PrivateKey key)
                                                          throws java.security.InvalidKeyException

Throws:

java.security.InvalidKeyException

getNamedCurveOid

public static ASN1ObjectIdentifier getNamedCurveOid(java.lang.String curveName)

getNamedCurveByOid

public static X9ECParameters getNamedCurveByOid(ASN1ObjectIdentifier oid)

getNamedCurveByName

public static X9ECParameters getNamedCurveByName(java.lang.String curveName)

getCurveName

public static java.lang.String getCurveName(ASN1ObjectIdentifier oid)

privateKeyToString

public static java.lang.String privateKeyToString(java.lang.String algorithm,
                                                  java.math.BigInteger d,
                                                  ECParameterSpec spec)

publicKeyToString

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

generateKeyFingerprint

public static java.lang.String generateKeyFingerprint(ECPoint publicPoint,
                                                      ECParameterSpec spec)

privateKeyHashCode

public static int privateKeyHashCode(java.math.BigInteger d,
                                     ECParameterSpec spec)

Hash code for an EC private scalar derived from the public point and domain parameters.