diff options
Diffstat (limited to 'prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/ecgost/KeyFactorySpi.java')
-rw-r--r-- | prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/ecgost/KeyFactorySpi.java | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/ecgost/KeyFactorySpi.java b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/ecgost/KeyFactorySpi.java new file mode 100644 index 00000000..1552ff0a --- /dev/null +++ b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/ecgost/KeyFactorySpi.java @@ -0,0 +1,166 @@ +package org.spongycastle.jcajce.provider.asymmetric.ecgost; + +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.cryptopro.CryptoProObjectIdentifiers; +import org.spongycastle.asn1.pkcs.PrivateKeyInfo; +import org.spongycastle.asn1.x509.SubjectPublicKeyInfo; +import org.spongycastle.jcajce.provider.asymmetric.util.EC5Util; +import org.spongycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi; +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 +{ + 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.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 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 BCECGOST3410PrivateKey((ECPrivateKeySpec)keySpec); + } + else if (keySpec instanceof java.security.spec.ECPrivateKeySpec) + { + return new BCECGOST3410PrivateKey((java.security.spec.ECPrivateKeySpec)keySpec); + } + + return super.engineGeneratePrivate(keySpec); + } + + protected PublicKey engineGeneratePublic( + KeySpec keySpec) + throws InvalidKeySpecException + { + if (keySpec instanceof ECPublicKeySpec) + { + return new BCECGOST3410PublicKey((ECPublicKeySpec)keySpec); + } + else if (keySpec instanceof java.security.spec.ECPublicKeySpec) + { + return new BCECGOST3410PublicKey((java.security.spec.ECPublicKeySpec)keySpec); + } + + return super.engineGeneratePublic(keySpec); + } + + public PrivateKey generatePrivate(PrivateKeyInfo keyInfo) + throws IOException + { + ASN1ObjectIdentifier algOid = keyInfo.getPrivateKeyAlgorithm().getAlgorithm(); + + if (algOid.equals(CryptoProObjectIdentifiers.gostR3410_2001)) + { + return new BCECGOST3410PrivateKey(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(CryptoProObjectIdentifiers.gostR3410_2001)) + { + return new BCECGOST3410PublicKey(keyInfo); + } + else + { + throw new IOException("algorithm identifier " + algOid + " in key not recognised"); + } + } +} |