1 files changed, 133 insertions, 0 deletions
diff --git a/prov/src/main/java/org/spongycastle/jce/spec/GOST3410ParameterSpec.java b/prov/src/main/java/org/spongycastle/jce/spec/GOST3410ParameterSpec.java
new file mode 100644
index 00000000..755a5284
--- /dev/null
+++ b/prov/src/main/java/org/spongycastle/jce/spec/GOST3410ParameterSpec.java
@@ -0,0 +1,133 @@
+package org.spongycastle.jce.spec;
+
+import java.security.spec.AlgorithmParameterSpec;
+
+import org.spongycastle.asn1.ASN1ObjectIdentifier;
+import org.spongycastle.asn1.cryptopro.CryptoProObjectIdentifiers;
+import org.spongycastle.asn1.cryptopro.GOST3410NamedParameters;
+import org.spongycastle.asn1.cryptopro.GOST3410ParamSetParameters;
+import org.spongycastle.asn1.cryptopro.GOST3410PublicKeyAlgParameters;
+import org.spongycastle.jce.interfaces.GOST3410Params;
+
+/**
+ * ParameterSpec for a GOST 3410-94 key.
+ */
+public class GOST3410ParameterSpec
+    implements AlgorithmParameterSpec, GOST3410Params
+{
+    private GOST3410PublicKeyParameterSetSpec keyParameters;
+    private String                            keyParamSetOID;
+    private String                            digestParamSetOID;
+    private String                            encryptionParamSetOID;
+    
+    public GOST3410ParameterSpec(
+        String  keyParamSetID,
+        String  digestParamSetOID,
+        String  encryptionParamSetOID)
+    {
+        GOST3410ParamSetParameters  ecP = null;
+        
+        try
+        {
+            ecP = GOST3410NamedParameters.getByOID(new ASN1ObjectIdentifier(keyParamSetID));
+        }
+        catch (IllegalArgumentException e)
+        {
+            ASN1ObjectIdentifier oid = GOST3410NamedParameters.getOID(keyParamSetID);
+            if (oid != null)
+            {
+                keyParamSetID = oid.getId();
+                ecP = GOST3410NamedParameters.getByOID(oid);
+            }
+        }
+        
+        if (ecP == null)
+        {
+            throw new IllegalArgumentException("no key parameter set for passed in name/OID.");
+        }
+
+        this.keyParameters = new GOST3410PublicKeyParameterSetSpec(
+                                        ecP.getP(),
+                                        ecP.getQ(),
+                                        ecP.getA());
+        
+        this.keyParamSetOID = keyParamSetID;
+        this.digestParamSetOID = digestParamSetOID;
+        this.encryptionParamSetOID = encryptionParamSetOID;
+    }
+    
+    public GOST3410ParameterSpec(
+        String  keyParamSetID,
+        String  digestParamSetOID)
+    {
+        this(keyParamSetID, digestParamSetOID, null);
+    }
+    
+    public GOST3410ParameterSpec(
+        String  keyParamSetID)
+    {
+        this(keyParamSetID, CryptoProObjectIdentifiers.gostR3411_94_CryptoProParamSet.getId(), null);
+    }
+    
+    public GOST3410ParameterSpec(
+        GOST3410PublicKeyParameterSetSpec spec)
+    {
+        this.keyParameters = spec;
+        this.digestParamSetOID = CryptoProObjectIdentifiers.gostR3411_94_CryptoProParamSet.getId();
+        this.encryptionParamSetOID = null;
+    }
+    
+    public String getPublicKeyParamSetOID()
+    {
+        return this.keyParamSetOID;
+    }
+
+    public GOST3410PublicKeyParameterSetSpec getPublicKeyParameters()
+    {
+        return keyParameters;
+    }
+    
+    public String getDigestParamSetOID()
+    {
+        return this.digestParamSetOID;
+    }
+
+    public String getEncryptionParamSetOID()
+    {
+        return this.encryptionParamSetOID;
+    }
+    
+    public boolean equals(Object o)
+    {
+        if (o instanceof GOST3410ParameterSpec)
+        {
+            GOST3410ParameterSpec other = (GOST3410ParameterSpec)o;
+            
+            return this.keyParameters.equals(other.keyParameters) 
+                && this.digestParamSetOID.equals(other.digestParamSetOID)
+                && (this.encryptionParamSetOID == other.encryptionParamSetOID
+                    || (this.encryptionParamSetOID != null && this.encryptionParamSetOID.equals(other.encryptionParamSetOID)));
+        }
+        
+        return false;
+    }
+    
+    public int hashCode()
+    {
+        return this.keyParameters.hashCode() ^ this.digestParamSetOID.hashCode() 
+                       ^ (this.encryptionParamSetOID != null ? this.encryptionParamSetOID.hashCode() : 0);
+    }
+
+    public static GOST3410ParameterSpec fromPublicKeyAlg(
+        GOST3410PublicKeyAlgParameters params)
+    {
+        if (params.getEncryptionParamSet() != null)
+        {
+            return new GOST3410ParameterSpec(params.getPublicKeyParamSet().getId(), params.getDigestParamSet().getId(), params.getEncryptionParamSet().getId());
+        }
+        else
+        {
+            return new GOST3410ParameterSpec(params.getPublicKeyParamSet().getId(), params.getDigestParamSet().getId());
+        }
+    }
+}