51 lines
3.2 KiB
Java
51 lines
3.2 KiB
Java
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package org.bouncycastle.crypto.util;
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import java.io.IOException;
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import org.bouncycastle.asn1.ASN1Integer;
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import org.bouncycastle.asn1.ASN1Null;
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import org.bouncycastle.asn1.ASN1OctetString;
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import org.bouncycastle.asn1.DERNull;
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import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
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import org.bouncycastle.asn1.pkcs.RSAPublicKey;
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import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
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import org.bouncycastle.asn1.x509.DSAParameter;
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import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
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import org.bouncycastle.asn1.x9.X962Parameters;
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import org.bouncycastle.asn1.x9.X9ECParameters;
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import org.bouncycastle.asn1.x9.X9ECPoint;
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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.DSAPublicKeyParameters;
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import org.bouncycastle.crypto.params.ECDomainParameters;
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import org.bouncycastle.crypto.params.ECNamedDomainParameters;
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import org.bouncycastle.crypto.params.ECPublicKeyParameters;
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import org.bouncycastle.crypto.params.RSAKeyParameters;
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/* loaded from: classes6.dex */
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public class SubjectPublicKeyInfoFactory {
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public static SubjectPublicKeyInfo createSubjectPublicKeyInfo(AsymmetricKeyParameter asymmetricKeyParameter) throws IOException {
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X962Parameters x962Parameters;
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if (asymmetricKeyParameter instanceof RSAKeyParameters) {
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RSAKeyParameters rSAKeyParameters = (RSAKeyParameters) asymmetricKeyParameter;
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return new SubjectPublicKeyInfo(new AlgorithmIdentifier(PKCSObjectIdentifiers.rsaEncryption, DERNull.INSTANCE), new RSAPublicKey(rSAKeyParameters.getModulus(), rSAKeyParameters.getExponent()));
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}
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if (asymmetricKeyParameter instanceof DSAPublicKeyParameters) {
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DSAPublicKeyParameters dSAPublicKeyParameters = (DSAPublicKeyParameters) asymmetricKeyParameter;
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DSAParameters parameters = dSAPublicKeyParameters.getParameters();
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return new SubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_dsa, parameters != null ? new DSAParameter(parameters.getP(), parameters.getQ(), parameters.getG()) : null), new ASN1Integer(dSAPublicKeyParameters.getY()));
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}
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if (!(asymmetricKeyParameter instanceof ECPublicKeyParameters)) {
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throw new IOException("key parameters not recognised.");
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}
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ECPublicKeyParameters eCPublicKeyParameters = (ECPublicKeyParameters) asymmetricKeyParameter;
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ECDomainParameters parameters2 = eCPublicKeyParameters.getParameters();
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if (parameters2 == null) {
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x962Parameters = new X962Parameters((ASN1Null) DERNull.INSTANCE);
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} else {
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x962Parameters = parameters2 instanceof ECNamedDomainParameters ? new X962Parameters(((ECNamedDomainParameters) parameters2).getName()) : new X962Parameters(new X9ECParameters(parameters2.getCurve(), parameters2.getG(), parameters2.getN(), parameters2.getH(), parameters2.getSeed()));
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}
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return new SubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, x962Parameters), ((ASN1OctetString) new X9ECPoint(eCPublicKeyParameters.getQ()).toASN1Primitive()).getOctets());
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}
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}
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