238 lines
11 KiB
Java
238 lines
11 KiB
Java
package org.bouncycastle.crypto.tls;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.math.BigInteger;
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import java.util.Vector;
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import org.bouncycastle.crypto.CryptoException;
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import org.bouncycastle.crypto.Digest;
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import org.bouncycastle.crypto.Signer;
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import org.bouncycastle.crypto.agreement.srp.SRP6Client;
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import org.bouncycastle.crypto.agreement.srp.SRP6Server;
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import org.bouncycastle.crypto.agreement.srp.SRP6Util;
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import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
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import org.bouncycastle.crypto.params.SRP6GroupParameters;
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import org.bouncycastle.crypto.util.PublicKeyFactory;
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import org.bouncycastle.util.Arrays;
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import org.bouncycastle.util.BigIntegers;
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import org.bouncycastle.util.io.TeeInputStream;
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/* loaded from: classes6.dex */
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public class TlsSRPKeyExchange extends AbstractTlsKeyExchange {
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protected TlsSRPGroupVerifier groupVerifier;
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protected byte[] identity;
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protected byte[] password;
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protected TlsSignerCredentials serverCredentials;
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protected AsymmetricKeyParameter serverPublicKey;
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protected SRP6Client srpClient;
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protected SRP6GroupParameters srpGroup;
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protected BigInteger srpPeerCredentials;
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protected byte[] srpSalt;
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protected SRP6Server srpServer;
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protected BigInteger srpVerifier;
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protected TlsSigner tlsSigner;
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@Override // org.bouncycastle.crypto.tls.AbstractTlsKeyExchange, org.bouncycastle.crypto.tls.TlsKeyExchange
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public boolean requiresServerKeyExchange() {
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return true;
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}
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@Override // org.bouncycastle.crypto.tls.TlsKeyExchange
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public void validateCertificateRequest(CertificateRequest certificateRequest) throws IOException {
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throw new TlsFatalAlert((short) 10);
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}
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@Override // org.bouncycastle.crypto.tls.TlsKeyExchange
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public void skipServerCredentials() throws IOException {
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if (this.tlsSigner != null) {
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throw new TlsFatalAlert((short) 10);
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}
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}
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@Override // org.bouncycastle.crypto.tls.AbstractTlsKeyExchange, org.bouncycastle.crypto.tls.TlsKeyExchange
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public void processServerKeyExchange(InputStream inputStream) throws IOException {
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SignerInputBuffer signerInputBuffer;
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InputStream inputStream2;
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SecurityParameters securityParameters = this.context.getSecurityParameters();
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if (this.tlsSigner != null) {
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signerInputBuffer = new SignerInputBuffer();
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inputStream2 = new TeeInputStream(inputStream, signerInputBuffer);
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} else {
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signerInputBuffer = null;
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inputStream2 = inputStream;
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}
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ServerSRPParams parse = ServerSRPParams.parse(inputStream2);
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if (signerInputBuffer != null) {
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DigitallySigned parseSignature = parseSignature(inputStream);
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Signer initVerifyer = initVerifyer(this.tlsSigner, parseSignature.getAlgorithm(), securityParameters);
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signerInputBuffer.updateSigner(initVerifyer);
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if (!initVerifyer.verifySignature(parseSignature.getSignature())) {
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throw new TlsFatalAlert((short) 51);
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}
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}
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SRP6GroupParameters sRP6GroupParameters = new SRP6GroupParameters(parse.getN(), parse.getG());
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this.srpGroup = sRP6GroupParameters;
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if (!this.groupVerifier.accept(sRP6GroupParameters)) {
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throw new TlsFatalAlert((short) 71);
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}
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this.srpSalt = parse.getS();
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try {
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this.srpPeerCredentials = SRP6Util.validatePublicValue(this.srpGroup.getN(), parse.getB());
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this.srpClient.init(this.srpGroup, TlsUtils.createHash((short) 2), this.context.getSecureRandom());
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} catch (CryptoException e) {
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throw new TlsFatalAlert((short) 47, e);
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}
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}
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@Override // org.bouncycastle.crypto.tls.AbstractTlsKeyExchange, org.bouncycastle.crypto.tls.TlsKeyExchange
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public void processServerCredentials(TlsCredentials tlsCredentials) throws IOException {
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if (this.keyExchange == 21 || !(tlsCredentials instanceof TlsSignerCredentials)) {
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throw new TlsFatalAlert((short) 80);
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}
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processServerCertificate(tlsCredentials.getCertificate());
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this.serverCredentials = (TlsSignerCredentials) tlsCredentials;
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}
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@Override // org.bouncycastle.crypto.tls.AbstractTlsKeyExchange, org.bouncycastle.crypto.tls.TlsKeyExchange
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public void processServerCertificate(Certificate certificate) throws IOException {
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if (this.tlsSigner == null) {
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throw new TlsFatalAlert((short) 10);
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}
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if (certificate.isEmpty()) {
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throw new TlsFatalAlert((short) 42);
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}
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org.bouncycastle.asn1.x509.Certificate certificateAt = certificate.getCertificateAt(0);
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try {
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AsymmetricKeyParameter createKey = PublicKeyFactory.createKey(certificateAt.getSubjectPublicKeyInfo());
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this.serverPublicKey = createKey;
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if (!this.tlsSigner.isValidPublicKey(createKey)) {
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throw new TlsFatalAlert((short) 46);
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}
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TlsUtils.validateKeyUsage(certificateAt, 128);
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super.processServerCertificate(certificate);
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} catch (RuntimeException e) {
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throw new TlsFatalAlert((short) 43, e);
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}
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}
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@Override // org.bouncycastle.crypto.tls.AbstractTlsKeyExchange, org.bouncycastle.crypto.tls.TlsKeyExchange
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public void processClientKeyExchange(InputStream inputStream) throws IOException {
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try {
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this.srpPeerCredentials = SRP6Util.validatePublicValue(this.srpGroup.getN(), TlsSRPUtils.readSRPParameter(inputStream));
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this.context.getSecurityParameters().srpIdentity = Arrays.clone(this.identity);
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} catch (CryptoException e) {
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throw new TlsFatalAlert((short) 47, e);
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}
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}
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@Override // org.bouncycastle.crypto.tls.TlsKeyExchange
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public void processClientCredentials(TlsCredentials tlsCredentials) throws IOException {
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throw new TlsFatalAlert((short) 80);
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}
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protected Signer initVerifyer(TlsSigner tlsSigner, SignatureAndHashAlgorithm signatureAndHashAlgorithm, SecurityParameters securityParameters) {
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Signer createVerifyer = tlsSigner.createVerifyer(signatureAndHashAlgorithm, this.serverPublicKey);
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createVerifyer.update(securityParameters.clientRandom, 0, securityParameters.clientRandom.length);
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createVerifyer.update(securityParameters.serverRandom, 0, securityParameters.serverRandom.length);
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return createVerifyer;
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}
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@Override // org.bouncycastle.crypto.tls.AbstractTlsKeyExchange, org.bouncycastle.crypto.tls.TlsKeyExchange
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public void init(TlsContext tlsContext) {
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super.init(tlsContext);
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TlsSigner tlsSigner = this.tlsSigner;
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if (tlsSigner != null) {
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tlsSigner.init(tlsContext);
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}
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}
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@Override // org.bouncycastle.crypto.tls.AbstractTlsKeyExchange, org.bouncycastle.crypto.tls.TlsKeyExchange
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public byte[] generateServerKeyExchange() throws IOException {
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this.srpServer.init(this.srpGroup, this.srpVerifier, TlsUtils.createHash((short) 2), this.context.getSecureRandom());
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ServerSRPParams serverSRPParams = new ServerSRPParams(this.srpGroup.getN(), this.srpGroup.getG(), this.srpSalt, this.srpServer.generateServerCredentials());
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DigestInputBuffer digestInputBuffer = new DigestInputBuffer();
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serverSRPParams.encode(digestInputBuffer);
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if (this.serverCredentials != null) {
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SignatureAndHashAlgorithm signatureAndHashAlgorithm = TlsUtils.getSignatureAndHashAlgorithm(this.context, this.serverCredentials);
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Digest createHash = TlsUtils.createHash(signatureAndHashAlgorithm);
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SecurityParameters securityParameters = this.context.getSecurityParameters();
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createHash.update(securityParameters.clientRandom, 0, securityParameters.clientRandom.length);
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createHash.update(securityParameters.serverRandom, 0, securityParameters.serverRandom.length);
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digestInputBuffer.updateDigest(createHash);
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byte[] bArr = new byte[createHash.getDigestSize()];
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createHash.doFinal(bArr, 0);
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new DigitallySigned(signatureAndHashAlgorithm, this.serverCredentials.generateCertificateSignature(bArr)).encode(digestInputBuffer);
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}
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return digestInputBuffer.toByteArray();
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}
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@Override // org.bouncycastle.crypto.tls.TlsKeyExchange
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public byte[] generatePremasterSecret() throws IOException {
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try {
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SRP6Server sRP6Server = this.srpServer;
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return BigIntegers.asUnsignedByteArray(sRP6Server != null ? sRP6Server.calculateSecret(this.srpPeerCredentials) : this.srpClient.calculateSecret(this.srpPeerCredentials));
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} catch (CryptoException e) {
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throw new TlsFatalAlert((short) 47, e);
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}
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}
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@Override // org.bouncycastle.crypto.tls.TlsKeyExchange
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public void generateClientKeyExchange(OutputStream outputStream) throws IOException {
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TlsSRPUtils.writeSRPParameter(this.srpClient.generateClientCredentials(this.srpSalt, this.identity, this.password), outputStream);
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this.context.getSecurityParameters().srpIdentity = Arrays.clone(this.identity);
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}
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protected static TlsSigner createSigner(int i) {
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switch (i) {
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case 21:
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return null;
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case 22:
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return new TlsDSSSigner();
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case 23:
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return new TlsRSASigner();
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default:
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throw new IllegalArgumentException("unsupported key exchange algorithm");
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}
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}
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public TlsSRPKeyExchange(int i, Vector vector, byte[] bArr, byte[] bArr2) {
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this(i, vector, new DefaultTlsSRPGroupVerifier(), bArr, bArr2);
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}
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public TlsSRPKeyExchange(int i, Vector vector, byte[] bArr, TlsSRPLoginParameters tlsSRPLoginParameters) {
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super(i, vector);
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this.serverPublicKey = null;
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this.srpGroup = null;
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this.srpClient = null;
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this.srpServer = null;
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this.srpPeerCredentials = null;
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this.srpVerifier = null;
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this.srpSalt = null;
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this.serverCredentials = null;
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this.tlsSigner = createSigner(i);
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this.identity = bArr;
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this.srpServer = new SRP6Server();
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this.srpGroup = tlsSRPLoginParameters.getGroup();
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this.srpVerifier = tlsSRPLoginParameters.getVerifier();
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this.srpSalt = tlsSRPLoginParameters.getSalt();
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}
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public TlsSRPKeyExchange(int i, Vector vector, TlsSRPGroupVerifier tlsSRPGroupVerifier, byte[] bArr, byte[] bArr2) {
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super(i, vector);
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this.serverPublicKey = null;
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this.srpGroup = null;
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this.srpClient = null;
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this.srpServer = null;
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this.srpPeerCredentials = null;
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this.srpVerifier = null;
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this.srpSalt = null;
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this.serverCredentials = null;
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this.tlsSigner = createSigner(i);
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this.groupVerifier = tlsSRPGroupVerifier;
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this.identity = bArr;
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this.password = bArr2;
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this.srpClient = new SRP6Client();
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}
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}
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