diff options
Diffstat (limited to 'prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/ec/KeyFactorySpi.java')
| -rw-r--r-- | prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/ec/KeyFactorySpi.java | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/ec/KeyFactorySpi.java b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/ec/KeyFactorySpi.java new file mode 100644 index 00000000..5e77a74c --- /dev/null +++ b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/ec/KeyFactorySpi.java @@ -0,0 +1,239 @@ +package org.spongycastle.jcajce.provider.asymmetric.ec; + +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.spongycastle.asn1.ASN1ObjectIdentifier; +import org.spongycastle.asn1.pkcs.PrivateKeyInfo; +import org.spongycastle.asn1.x509.SubjectPublicKeyInfo; +import org.spongycastle.asn1.x9.X9ObjectIdentifiers; +import org.spongycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi; +import org.spongycastle.jcajce.provider.asymmetric.util.EC5Util; +import org.spongycastle.jcajce.provider.config.ProviderConfiguration; +import org.spongycastle.jcajce.provider.util.AsymmetricKeyInfoConverter; +import org.spongycastle.jce.provider.BouncyCastleProvider; +import org.spongycastle.jce.spec.ECParameterSpec; +import org.spongycastle.jce.spec.ECPrivateKeySpec; +import org.spongycastle.jce.spec.ECPublicKeySpec; + +public class KeyFactorySpi + extends BaseKeyFactorySpi + implements AsymmetricKeyInfoConverter +{ + String algorithm; + ProviderConfiguration configuration; + + KeyFactorySpi( + String algorithm, + ProviderConfiguration configuration) + { + this.algorithm = algorithm; + this.configuration = configuration; + } + + protected Key engineTranslateKey( + Key key) + throws InvalidKeyException + { + if (key instanceof ECPublicKey) + { + return new BCECPublicKey((ECPublicKey)key, configuration); + } + else if (key instanceof ECPrivateKey) + { + return new BCECPrivateKey((ECPrivateKey)key, configuration); + } + + throw new InvalidKeyException("key type unknown"); + } + + 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.spongycastle.jce.spec.ECPublicKeySpec.class) && key instanceof ECPublicKey) + { + ECPublicKey k = (ECPublicKey)key; + if (k.getParams() != null) + { + return new org.spongycastle.jce.spec.ECPublicKeySpec(EC5Util.convertPoint(k.getParams(), k.getW(), false), EC5Util.convertSpec(k.getParams(), false)); + } + else + { + ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa(); + + return new org.spongycastle.jce.spec.ECPublicKeySpec(EC5Util.convertPoint(k.getParams(), k.getW(), false), implicitSpec); + } + } + else if (spec.isAssignableFrom(org.spongycastle.jce.spec.ECPrivateKeySpec.class) && key instanceof ECPrivateKey) + { + ECPrivateKey k = (ECPrivateKey)key; + + if (k.getParams() != null) + { + return new org.spongycastle.jce.spec.ECPrivateKeySpec(k.getS(), EC5Util.convertSpec(k.getParams(), false)); + } + else + { + ECParameterSpec implicitSpec = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa(); + + return new org.spongycastle.jce.spec.ECPrivateKeySpec(k.getS(), implicitSpec); + } + } + + return super.engineGetKeySpec(key, spec); + } + + protected PrivateKey engineGeneratePrivate( + KeySpec keySpec) + throws InvalidKeySpecException + { + if (keySpec instanceof ECPrivateKeySpec) + { + return new BCECPrivateKey(algorithm, (ECPrivateKeySpec)keySpec, configuration); + } + else if (keySpec instanceof java.security.spec.ECPrivateKeySpec) + { + return new BCECPrivateKey(algorithm, (java.security.spec.ECPrivateKeySpec)keySpec, configuration); + } + + return super.engineGeneratePrivate(keySpec); + } + + protected PublicKey engineGeneratePublic( + KeySpec keySpec) + throws InvalidKeySpecException + { + if (keySpec instanceof ECPublicKeySpec) + { + return new BCECPublicKey(algorithm, (ECPublicKeySpec)keySpec, configuration); + } + else if (keySpec instanceof java.security.spec.ECPublicKeySpec) + { + return new BCECPublicKey(algorithm, (java.security.spec.ECPublicKeySpec)keySpec, configuration); + } + + return super.engineGeneratePublic(keySpec); + } + + public PrivateKey generatePrivate(PrivateKeyInfo keyInfo) + throws IOException + { + ASN1ObjectIdentifier algOid = keyInfo.getPrivateKeyAlgorithm().getAlgorithm(); + + if (algOid.equals(X9ObjectIdentifiers.id_ecPublicKey)) + { + return new BCECPrivateKey(algorithm, keyInfo, configuration); + } + 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(X9ObjectIdentifiers.id_ecPublicKey)) + { + return new BCECPublicKey(algorithm, keyInfo, configuration); + } + else + { + throw new IOException("algorithm identifier " + algOid + " in key not recognised"); + } + } + + public static class EC + extends KeyFactorySpi + { + public EC() + { + super("EC", BouncyCastleProvider.CONFIGURATION); + } + } + + public static class ECDSA + extends KeyFactorySpi + { + public ECDSA() + { + super("ECDSA", BouncyCastleProvider.CONFIGURATION); + } + } + + public static class ECGOST3410 + extends KeyFactorySpi + { + public ECGOST3410() + { + super("ECGOST3410", BouncyCastleProvider.CONFIGURATION); + } + } + + public static class ECDH + extends KeyFactorySpi + { + public ECDH() + { + super("ECDH", BouncyCastleProvider.CONFIGURATION); + } + } + + public static class ECDHC + extends KeyFactorySpi + { + public ECDHC() + { + super("ECDHC", BouncyCastleProvider.CONFIGURATION); + } + } + + public static class ECMQV + extends KeyFactorySpi + { + public ECMQV() + { + super("ECMQV", BouncyCastleProvider.CONFIGURATION); + } + } +}
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