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package org.spongycastle.pqc.jcajce.provider.mceliece;
import java.security.InvalidKeyException;
import java.security.PrivateKey;
import java.security.PublicKey;
import org.spongycastle.crypto.params.AsymmetricKeyParameter;
import org.spongycastle.pqc.crypto.mceliece.McEliecePrivateKeyParameters;
import org.spongycastle.pqc.crypto.mceliece.McEliecePublicKeyParameters;
/**
* utility class for converting jce/jca McEliece objects
* objects into their org.spongycastle.crypto counterparts.
*/
public class McElieceKeysToParams
{
static public AsymmetricKeyParameter generatePublicKeyParameter(
PublicKey key)
throws InvalidKeyException
{
if (key instanceof BCMcEliecePublicKey)
{
BCMcEliecePublicKey k = (BCMcEliecePublicKey)key;
return new McEliecePublicKeyParameters(k.getOIDString(), k.getN(), k.getT(), k.getG(), k.getMcElieceParameters());
}
throw new InvalidKeyException("can't identify McEliece public key: " + key.getClass().getName());
}
static public AsymmetricKeyParameter generatePrivateKeyParameter(
PrivateKey key)
throws InvalidKeyException
{
if (key instanceof BCMcEliecePrivateKey)
{
BCMcEliecePrivateKey k = (BCMcEliecePrivateKey)key;
return new McEliecePrivateKeyParameters(k.getOIDString(), k.getN(), k.getK(), k.getField(), k.getGoppaPoly(),
k.getSInv(), k.getP1(), k.getP2(), k.getH(), k.getQInv(), k.getMcElieceParameters());
}
throw new InvalidKeyException("can't identify McEliece private key.");
}
}
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