| package org.bouncycastle.jcajce.provider.asymmetric.dstu; |
| |
| import java.io.IOException; |
| import java.security.InvalidKeyException; |
| import java.security.Key; |
| import java.security.PrivateKey; |
| import java.security.PublicKey; |
| import java.security.interfaces.ECPrivateKey; |
| import java.security.interfaces.ECPublicKey; |
| import java.security.spec.InvalidKeySpecException; |
| import java.security.spec.KeySpec; |
| |
| import org.bouncycastle.asn1.ASN1ObjectIdentifier; |
| import org.bouncycastle.asn1.pkcs.PrivateKeyInfo; |
| import org.bouncycastle.asn1.ua.UAObjectIdentifiers; |
| import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo; |
| import org.bouncycastle.jcajce.provider.asymmetric.util.EC5Util; |
| import org.bouncycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi; |
| import org.bouncycastle.jce.provider.BouncyCastleProvider; |
| import org.bouncycastle.jce.spec.ECParameterSpec; |
| import org.bouncycastle.jce.spec.ECPrivateKeySpec; |
| import org.bouncycastle.jce.spec.ECPublicKeySpec; |
| |
| public class KeyFactorySpi |
| extends BaseKeyFactorySpi |
| { |
| public KeyFactorySpi() |
| { |
| } |
| |
| protected KeySpec engineGetKeySpec( |
| Key key, |
| Class spec) |
| throws InvalidKeySpecException |
| { |
| if (spec.isAssignableFrom(java.security.spec.ECPublicKeySpec.class) && key instanceof ECPublicKey) |
| { |
| ECPublicKey k = (ECPublicKey)key; |
| if (k.getParams() != null) |
| { |
| return new java.security.spec.ECPublicKeySpec(k.getW(), k.getParams()); |
| } |
| else |
| { |
| ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa(); |
| |
| return new java.security.spec.ECPublicKeySpec(k.getW(), EC5Util.convertSpec(EC5Util.convertCurve(implicitSpec.getCurve(), implicitSpec.getSeed()), implicitSpec)); |
| } |
| } |
| else if (spec.isAssignableFrom(java.security.spec.ECPrivateKeySpec.class) && key instanceof ECPrivateKey) |
| { |
| ECPrivateKey k = (ECPrivateKey)key; |
| |
| if (k.getParams() != null) |
| { |
| return new java.security.spec.ECPrivateKeySpec(k.getS(), k.getParams()); |
| } |
| else |
| { |
| ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa(); |
| |
| return new java.security.spec.ECPrivateKeySpec(k.getS(), EC5Util.convertSpec(EC5Util.convertCurve(implicitSpec.getCurve(), implicitSpec.getSeed()), implicitSpec)); |
| } |
| } |
| else if (spec.isAssignableFrom(org.bouncycastle.jce.spec.ECPublicKeySpec.class) && key instanceof ECPublicKey) |
| { |
| ECPublicKey k = (ECPublicKey)key; |
| if (k.getParams() != null) |
| { |
| return new org.bouncycastle.jce.spec.ECPublicKeySpec(EC5Util.convertPoint(k.getParams(), k.getW(), false), EC5Util.convertSpec(k.getParams(), false)); |
| } |
| else |
| { |
| ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa(); |
| |
| return new org.bouncycastle.jce.spec.ECPublicKeySpec(EC5Util.convertPoint(k.getParams(), k.getW(), false), implicitSpec); |
| } |
| } |
| else if (spec.isAssignableFrom(org.bouncycastle.jce.spec.ECPrivateKeySpec.class) && key instanceof ECPrivateKey) |
| { |
| ECPrivateKey k = (ECPrivateKey)key; |
| |
| if (k.getParams() != null) |
| { |
| return new org.bouncycastle.jce.spec.ECPrivateKeySpec(k.getS(), EC5Util.convertSpec(k.getParams(), false)); |
| } |
| else |
| { |
| ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa(); |
| |
| return new org.bouncycastle.jce.spec.ECPrivateKeySpec(k.getS(), implicitSpec); |
| } |
| } |
| |
| return super.engineGetKeySpec(key, spec); |
| } |
| |
| protected Key engineTranslateKey( |
| Key key) |
| throws InvalidKeyException |
| { |
| throw new InvalidKeyException("key type unknown"); |
| } |
| |
| protected PrivateKey engineGeneratePrivate( |
| KeySpec keySpec) |
| throws InvalidKeySpecException |
| { |
| if (keySpec instanceof ECPrivateKeySpec) |
| { |
| return new BCDSTU4145PrivateKey((ECPrivateKeySpec)keySpec); |
| } |
| else if (keySpec instanceof java.security.spec.ECPrivateKeySpec) |
| { |
| return new BCDSTU4145PrivateKey((java.security.spec.ECPrivateKeySpec)keySpec); |
| } |
| |
| return super.engineGeneratePrivate(keySpec); |
| } |
| |
| protected PublicKey engineGeneratePublic( |
| KeySpec keySpec) |
| throws InvalidKeySpecException |
| { |
| if (keySpec instanceof ECPublicKeySpec) |
| { |
| return new BCDSTU4145PublicKey((ECPublicKeySpec)keySpec, BouncyCastleProvider.CONFIGURATION); |
| } |
| else if (keySpec instanceof java.security.spec.ECPublicKeySpec) |
| { |
| return new BCDSTU4145PublicKey((java.security.spec.ECPublicKeySpec)keySpec); |
| } |
| |
| return super.engineGeneratePublic(keySpec); |
| } |
| |
| public PrivateKey generatePrivate(PrivateKeyInfo keyInfo) |
| throws IOException |
| { |
| ASN1ObjectIdentifier algOid = keyInfo.getPrivateKeyAlgorithm().getAlgorithm(); |
| |
| if (algOid.equals(UAObjectIdentifiers.dstu4145le) || algOid.equals(UAObjectIdentifiers.dstu4145be)) |
| { |
| return new BCDSTU4145PrivateKey(keyInfo); |
| } |
| else |
| { |
| throw new IOException("algorithm identifier " + algOid + " in key not recognised"); |
| } |
| } |
| |
| public PublicKey generatePublic(SubjectPublicKeyInfo keyInfo) |
| throws IOException |
| { |
| ASN1ObjectIdentifier algOid = keyInfo.getAlgorithm().getAlgorithm(); |
| |
| if (algOid.equals(UAObjectIdentifiers.dstu4145le) || algOid.equals(UAObjectIdentifiers.dstu4145be)) |
| { |
| return new BCDSTU4145PublicKey(keyInfo); |
| } |
| else |
| { |
| throw new IOException("algorithm identifier " + algOid + " in key not recognised"); |
| } |
| } |
| } |