92 lines
5.6 KiB
Java
92 lines
5.6 KiB
Java
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package org.bouncycastle.crypto.util;
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import java.io.IOException;
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import java.io.InputStream;
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import java.math.BigInteger;
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import org.bouncycastle.asn1.ASN1Encodable;
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import org.bouncycastle.asn1.ASN1InputStream;
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import org.bouncycastle.asn1.ASN1Integer;
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import org.bouncycastle.asn1.ASN1ObjectIdentifier;
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import org.bouncycastle.asn1.ASN1Primitive;
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import org.bouncycastle.asn1.oiw.ElGamalParameter;
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import org.bouncycastle.asn1.oiw.OIWObjectIdentifiers;
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import org.bouncycastle.asn1.pkcs.DHParameter;
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import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
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import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
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import org.bouncycastle.asn1.pkcs.RSAPrivateKey;
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import org.bouncycastle.asn1.sec.ECPrivateKey;
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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.x9.ECNamedCurveTable;
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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.X9ObjectIdentifiers;
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import org.bouncycastle.crypto.ec.CustomNamedCurves;
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import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
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import org.bouncycastle.crypto.params.DHParameters;
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import org.bouncycastle.crypto.params.DHPrivateKeyParameters;
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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.ECDomainParameters;
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import org.bouncycastle.crypto.params.ECNamedDomainParameters;
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import org.bouncycastle.crypto.params.ECPrivateKeyParameters;
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import org.bouncycastle.crypto.params.ElGamalParameters;
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import org.bouncycastle.crypto.params.ElGamalPrivateKeyParameters;
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import org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters;
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/* loaded from: classes6.dex */
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public class PrivateKeyFactory {
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public static AsymmetricKeyParameter createKey(byte[] bArr) throws IOException {
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return createKey(PrivateKeyInfo.getInstance(ASN1Primitive.fromByteArray(bArr)));
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}
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public static AsymmetricKeyParameter createKey(PrivateKeyInfo privateKeyInfo) throws IOException {
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ECDomainParameters eCDomainParameters;
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AlgorithmIdentifier privateKeyAlgorithm = privateKeyInfo.getPrivateKeyAlgorithm();
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if (privateKeyAlgorithm.getAlgorithm().equals(PKCSObjectIdentifiers.rsaEncryption)) {
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RSAPrivateKey rSAPrivateKey = RSAPrivateKey.getInstance(privateKeyInfo.parsePrivateKey());
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return new RSAPrivateCrtKeyParameters(rSAPrivateKey.getModulus(), rSAPrivateKey.getPublicExponent(), rSAPrivateKey.getPrivateExponent(), rSAPrivateKey.getPrime1(), rSAPrivateKey.getPrime2(), rSAPrivateKey.getExponent1(), rSAPrivateKey.getExponent2(), rSAPrivateKey.getCoefficient());
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}
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DSAParameters dSAParameters = null;
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if (privateKeyAlgorithm.getAlgorithm().equals(PKCSObjectIdentifiers.dhKeyAgreement)) {
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DHParameter dHParameter = DHParameter.getInstance(privateKeyAlgorithm.getParameters());
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ASN1Integer aSN1Integer = (ASN1Integer) privateKeyInfo.parsePrivateKey();
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BigInteger l = dHParameter.getL();
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return new DHPrivateKeyParameters(aSN1Integer.getValue(), new DHParameters(dHParameter.getP(), dHParameter.getG(), null, l == null ? 0 : l.intValue()));
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}
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if (privateKeyAlgorithm.getAlgorithm().equals(OIWObjectIdentifiers.elGamalAlgorithm)) {
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ElGamalParameter elGamalParameter = ElGamalParameter.getInstance(privateKeyAlgorithm.getParameters());
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return new ElGamalPrivateKeyParameters(((ASN1Integer) privateKeyInfo.parsePrivateKey()).getValue(), new ElGamalParameters(elGamalParameter.getP(), elGamalParameter.getG()));
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}
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if (privateKeyAlgorithm.getAlgorithm().equals(X9ObjectIdentifiers.id_dsa)) {
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ASN1Integer aSN1Integer2 = (ASN1Integer) privateKeyInfo.parsePrivateKey();
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ASN1Encodable parameters = privateKeyAlgorithm.getParameters();
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if (parameters != null) {
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DSAParameter dSAParameter = DSAParameter.getInstance(parameters.toASN1Primitive());
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dSAParameters = new DSAParameters(dSAParameter.getP(), dSAParameter.getQ(), dSAParameter.getG());
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}
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return new DSAPrivateKeyParameters(aSN1Integer2.getValue(), dSAParameters);
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}
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if (!privateKeyAlgorithm.getAlgorithm().equals(X9ObjectIdentifiers.id_ecPublicKey)) {
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throw new RuntimeException("algorithm identifier in key not recognised");
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}
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X962Parameters x962Parameters = new X962Parameters((ASN1Primitive) privateKeyAlgorithm.getParameters());
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if (x962Parameters.isNamedCurve()) {
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ASN1ObjectIdentifier aSN1ObjectIdentifier = (ASN1ObjectIdentifier) x962Parameters.getParameters();
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X9ECParameters byOID = CustomNamedCurves.getByOID(aSN1ObjectIdentifier);
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if (byOID == null) {
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byOID = ECNamedCurveTable.getByOID(aSN1ObjectIdentifier);
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}
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eCDomainParameters = new ECNamedDomainParameters(aSN1ObjectIdentifier, byOID.getCurve(), byOID.getG(), byOID.getN(), byOID.getH(), byOID.getSeed());
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} else {
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X9ECParameters x9ECParameters = X9ECParameters.getInstance(x962Parameters.getParameters());
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eCDomainParameters = new ECDomainParameters(x9ECParameters.getCurve(), x9ECParameters.getG(), x9ECParameters.getN(), x9ECParameters.getH(), x9ECParameters.getSeed());
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}
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return new ECPrivateKeyParameters(ECPrivateKey.getInstance(privateKeyInfo.parsePrivateKey()).getKey(), eCDomainParameters);
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}
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public static AsymmetricKeyParameter createKey(InputStream inputStream) throws IOException {
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return createKey(PrivateKeyInfo.getInstance(new ASN1InputStream(inputStream).readObject()));
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}
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}
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