1 files changed, 81 insertions, 0 deletions
diff --git a/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/gost/KeyPairGeneratorSpi.java b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/gost/KeyPairGeneratorSpi.java
new file mode 100644
index 00000000..67ac1b91
--- /dev/null
+++ b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/gost/KeyPairGeneratorSpi.java
@@ -0,0 +1,81 @@
+package org.spongycastle.jcajce.provider.asymmetric.gost;
+
+import java.security.InvalidAlgorithmParameterException;
+import java.security.KeyPair;
+import java.security.SecureRandom;
+import java.security.spec.AlgorithmParameterSpec;
+
+import org.spongycastle.asn1.cryptopro.CryptoProObjectIdentifiers;
+import org.spongycastle.crypto.AsymmetricCipherKeyPair;
+import org.spongycastle.crypto.generators.GOST3410KeyPairGenerator;
+import org.spongycastle.crypto.params.GOST3410KeyGenerationParameters;
+import org.spongycastle.crypto.params.GOST3410Parameters;
+import org.spongycastle.crypto.params.GOST3410PrivateKeyParameters;
+import org.spongycastle.crypto.params.GOST3410PublicKeyParameters;
+import org.spongycastle.jce.spec.GOST3410ParameterSpec;
+import org.spongycastle.jce.spec.GOST3410PublicKeyParameterSetSpec;
+
+public class KeyPairGeneratorSpi
+    extends java.security.KeyPairGenerator
+{
+    GOST3410KeyGenerationParameters param;
+    GOST3410KeyPairGenerator engine = new GOST3410KeyPairGenerator();
+    GOST3410ParameterSpec gost3410Params;
+    int strength = 1024;
+    SecureRandom random = null;
+    boolean initialised = false;
+
+    public KeyPairGeneratorSpi()
+    {
+        super("GOST3410");
+    }
+
+    public void initialize(
+        int strength,
+        SecureRandom random)
+    {
+        this.strength = strength;
+        this.random = random;
+    }
+
+    private void init(
+        GOST3410ParameterSpec gParams,
+        SecureRandom random)
+    {
+        GOST3410PublicKeyParameterSetSpec spec = gParams.getPublicKeyParameters();
+
+        param = new GOST3410KeyGenerationParameters(random, new GOST3410Parameters(spec.getP(), spec.getQ(), spec.getA()));
+
+        engine.init(param);
+
+        initialised = true;
+        gost3410Params = gParams;
+    }
+
+    public void initialize(
+        AlgorithmParameterSpec params,
+        SecureRandom random)
+        throws InvalidAlgorithmParameterException
+    {
+        if (!(params instanceof GOST3410ParameterSpec))
+        {
+            throw new InvalidAlgorithmParameterException("parameter object not a GOST3410ParameterSpec");
+        }
+
+        init((GOST3410ParameterSpec)params, random);
+    }
+
+    public KeyPair generateKeyPair()
+    {
+        if (!initialised)
+        {
+            init(new GOST3410ParameterSpec(CryptoProObjectIdentifiers.gostR3410_94_CryptoPro_A.getId()), new SecureRandom());
+        }
+
+        AsymmetricCipherKeyPair pair = engine.generateKeyPair();
+        GOST3410PublicKeyParameters pub = (GOST3410PublicKeyParameters)pair.getPublic();
+        GOST3410PrivateKeyParameters priv = (GOST3410PrivateKeyParameters)pair.getPrivate();
+
+        return new KeyPair(new BCGOST3410PublicKey(pub, gost3410Params), new BCGOST3410PrivateKey(priv, gost3410Params));
+    }
+}