what-the-bank/sources/org/bouncycastle/crypto/tls/TlsRSAKeyExchange.java

package org.bouncycastle.crypto.tls;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Vector;
import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
import org.bouncycastle.crypto.params.RSAKeyParameters;
import org.bouncycastle.crypto.util.PublicKeyFactory;
import org.bouncycastle.util.io.Streams;

/* loaded from: classes6.dex */
public class TlsRSAKeyExchange extends AbstractTlsKeyExchange {
    protected byte[] premasterSecret;
    protected RSAKeyParameters rsaServerPublicKey;
    protected TlsEncryptionCredentials serverCredentials;
    protected AsymmetricKeyParameter serverPublicKey;

    protected RSAKeyParameters validateRSAPublicKey(RSAKeyParameters rSAKeyParameters) throws IOException {
        if (rSAKeyParameters.getExponent().isProbablePrime(2)) {
            return rSAKeyParameters;
        }
        throw new TlsFatalAlert((short) 47);
    }

    @Override // org.bouncycastle.crypto.tls.TlsKeyExchange
    public void validateCertificateRequest(CertificateRequest certificateRequest) throws IOException {
        for (short s : certificateRequest.getCertificateTypes()) {
            if (s != 1 && s != 2 && s != 64) {
                throw new TlsFatalAlert((short) 47);
            }
        }
    }

    @Override // org.bouncycastle.crypto.tls.TlsKeyExchange
    public void skipServerCredentials() throws IOException {
        throw new TlsFatalAlert((short) 10);
    }

    @Override // org.bouncycastle.crypto.tls.AbstractTlsKeyExchange, org.bouncycastle.crypto.tls.TlsKeyExchange
    public void processServerCredentials(TlsCredentials tlsCredentials) throws IOException {
        if (!(tlsCredentials instanceof TlsEncryptionCredentials)) {
            throw new TlsFatalAlert((short) 80);
        }
        processServerCertificate(tlsCredentials.getCertificate());
        this.serverCredentials = (TlsEncryptionCredentials) tlsCredentials;
    }

    @Override // org.bouncycastle.crypto.tls.AbstractTlsKeyExchange, org.bouncycastle.crypto.tls.TlsKeyExchange
    public void processServerCertificate(Certificate certificate) throws IOException {
        if (certificate.isEmpty()) {
            throw new TlsFatalAlert((short) 42);
        }
        org.bouncycastle.asn1.x509.Certificate certificateAt = certificate.getCertificateAt(0);
        try {
            AsymmetricKeyParameter createKey = PublicKeyFactory.createKey(certificateAt.getSubjectPublicKeyInfo());
            this.serverPublicKey = createKey;
            if (createKey.isPrivate()) {
                throw new TlsFatalAlert((short) 80);
            }
            this.rsaServerPublicKey = validateRSAPublicKey((RSAKeyParameters) this.serverPublicKey);
            TlsUtils.validateKeyUsage(certificateAt, 32);
            super.processServerCertificate(certificate);
        } catch (RuntimeException e) {
            throw new TlsFatalAlert((short) 43, e);
        }
    }

    @Override // org.bouncycastle.crypto.tls.AbstractTlsKeyExchange, org.bouncycastle.crypto.tls.TlsKeyExchange
    public void processClientKeyExchange(InputStream inputStream) throws IOException {
        this.premasterSecret = this.serverCredentials.decryptPreMasterSecret(TlsUtils.isSSL(this.context) ? Streams.readAll(inputStream) : TlsUtils.readOpaque16(inputStream));
    }

    @Override // org.bouncycastle.crypto.tls.TlsKeyExchange
    public void processClientCredentials(TlsCredentials tlsCredentials) throws IOException {
        if (!(tlsCredentials instanceof TlsSignerCredentials)) {
            throw new TlsFatalAlert((short) 80);
        }
    }

    @Override // org.bouncycastle.crypto.tls.TlsKeyExchange
    public byte[] generatePremasterSecret() throws IOException {
        byte[] bArr = this.premasterSecret;
        if (bArr == null) {
            throw new TlsFatalAlert((short) 80);
        }
        this.premasterSecret = null;
        return bArr;
    }

    @Override // org.bouncycastle.crypto.tls.TlsKeyExchange
    public void generateClientKeyExchange(OutputStream outputStream) throws IOException {
        this.premasterSecret = TlsRSAUtils.generateEncryptedPreMasterSecret(this.context, this.rsaServerPublicKey, outputStream);
    }

    public TlsRSAKeyExchange(Vector vector) {
        super(1, vector);
        this.serverPublicKey = null;
        this.rsaServerPublicKey = null;
        this.serverCredentials = null;
    }
}