package org.bouncycastle.jcajce.provider.asymmetric.dsa;

import java.security.InvalidKeyException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.interfaces.DSAPrivateKey;
import java.security.interfaces.DSAPublicKey;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.oiw.OIWObjectIdentifiers;
import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
import org.bouncycastle.crypto.params.DSAParameters;
import org.bouncycastle.crypto.params.DSAPrivateKeyParameters;
import org.bouncycastle.crypto.params.DSAPublicKeyParameters;

/* loaded from: classes6.dex */
public class DSAUtil {
    public static final ASN1ObjectIdentifier[] dsaOids = {X9ObjectIdentifiers.id_dsa, OIWObjectIdentifiers.dsaWithSHA1};

    public static boolean isDsaOid(ASN1ObjectIdentifier aSN1ObjectIdentifier) {
        int i = 0;
        while (true) {
            ASN1ObjectIdentifier[] aSN1ObjectIdentifierArr = dsaOids;
            if (i == aSN1ObjectIdentifierArr.length) {
                return false;
            }
            if (aSN1ObjectIdentifier.equals(aSN1ObjectIdentifierArr[i])) {
                return true;
            }
            i++;
        }
    }

    public static AsymmetricKeyParameter generatePublicKeyParameter(PublicKey publicKey) throws InvalidKeyException {
        if (publicKey instanceof DSAPublicKey) {
            DSAPublicKey dSAPublicKey = (DSAPublicKey) publicKey;
            return new DSAPublicKeyParameters(dSAPublicKey.getY(), new DSAParameters(dSAPublicKey.getParams().getP(), dSAPublicKey.getParams().getQ(), dSAPublicKey.getParams().getG()));
        }
        StringBuilder sb = new StringBuilder("can't identify DSA public key: ");
        sb.append(publicKey.getClass().getName());
        throw new InvalidKeyException(sb.toString());
    }

    public static AsymmetricKeyParameter generatePrivateKeyParameter(PrivateKey privateKey) throws InvalidKeyException {
        if (!(privateKey instanceof DSAPrivateKey)) {
            throw new InvalidKeyException("can't identify DSA private key.");
        }
        DSAPrivateKey dSAPrivateKey = (DSAPrivateKey) privateKey;
        return new DSAPrivateKeyParameters(dSAPrivateKey.getX(), new DSAParameters(dSAPrivateKey.getParams().getP(), dSAPrivateKey.getParams().getQ(), dSAPrivateKey.getParams().getG()));
    }
}