52 lines
2.4 KiB
Java
52 lines
2.4 KiB
Java
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package org.bouncycastle.jcajce.provider.asymmetric.dsa;
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import java.security.InvalidKeyException;
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import java.security.PrivateKey;
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import java.security.PublicKey;
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import java.security.interfaces.DSAPrivateKey;
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import java.security.interfaces.DSAPublicKey;
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import org.bouncycastle.asn1.ASN1ObjectIdentifier;
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import org.bouncycastle.asn1.oiw.OIWObjectIdentifiers;
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import org.bouncycastle.asn1.x9.X9ObjectIdentifiers;
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import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
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import org.bouncycastle.crypto.params.DSAParameters;
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import org.bouncycastle.crypto.params.DSAPrivateKeyParameters;
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import org.bouncycastle.crypto.params.DSAPublicKeyParameters;
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/* loaded from: classes6.dex */
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public class DSAUtil {
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public static final ASN1ObjectIdentifier[] dsaOids = {X9ObjectIdentifiers.id_dsa, OIWObjectIdentifiers.dsaWithSHA1};
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public static boolean isDsaOid(ASN1ObjectIdentifier aSN1ObjectIdentifier) {
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int i = 0;
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while (true) {
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ASN1ObjectIdentifier[] aSN1ObjectIdentifierArr = dsaOids;
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if (i == aSN1ObjectIdentifierArr.length) {
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return false;
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}
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if (aSN1ObjectIdentifier.equals(aSN1ObjectIdentifierArr[i])) {
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return true;
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}
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i++;
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}
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}
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public static AsymmetricKeyParameter generatePublicKeyParameter(PublicKey publicKey) throws InvalidKeyException {
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if (publicKey instanceof DSAPublicKey) {
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DSAPublicKey dSAPublicKey = (DSAPublicKey) publicKey;
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return new DSAPublicKeyParameters(dSAPublicKey.getY(), new DSAParameters(dSAPublicKey.getParams().getP(), dSAPublicKey.getParams().getQ(), dSAPublicKey.getParams().getG()));
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}
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StringBuilder sb = new StringBuilder("can't identify DSA public key: ");
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sb.append(publicKey.getClass().getName());
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throw new InvalidKeyException(sb.toString());
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}
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public static AsymmetricKeyParameter generatePrivateKeyParameter(PrivateKey privateKey) throws InvalidKeyException {
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if (!(privateKey instanceof DSAPrivateKey)) {
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throw new InvalidKeyException("can't identify DSA private key.");
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}
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DSAPrivateKey dSAPrivateKey = (DSAPrivateKey) privateKey;
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return new DSAPrivateKeyParameters(dSAPrivateKey.getX(), new DSAParameters(dSAPrivateKey.getParams().getP(), dSAPrivateKey.getParams().getQ(), dSAPrivateKey.getParams().getG()));
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}
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}
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