1 files changed, 0 insertions, 116 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/TlsRSAUtils.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/TlsRSAUtils.java
deleted file mode 100644
index 70ef035d7..000000000
--- a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/TlsRSAUtils.java
+++ /dev/null
@@ -1,116 +0,0 @@
-package org.spongycastle.crypto.tls;
-
-import java.io.IOException;
-import java.io.OutputStream;
-
-import org.spongycastle.crypto.InvalidCipherTextException;
-import org.spongycastle.crypto.encodings.PKCS1Encoding;
-import org.spongycastle.crypto.engines.RSABlindedEngine;
-import org.spongycastle.crypto.params.ParametersWithRandom;
-import org.spongycastle.crypto.params.RSAKeyParameters;
-
-public class TlsRSAUtils
-{
-    public static byte[] generateEncryptedPreMasterSecret(TlsContext context, RSAKeyParameters rsaServerPublicKey,
-        OutputStream output) throws IOException
-    {
-        /*
-         * Choose a PremasterSecret and send it encrypted to the server
-         */
-        byte[] premasterSecret = new byte[48];
-        context.getSecureRandom().nextBytes(premasterSecret);
-        TlsUtils.writeVersion(context.getClientVersion(), premasterSecret, 0);
-
-        PKCS1Encoding encoding = new PKCS1Encoding(new RSABlindedEngine());
-        encoding.init(true, new ParametersWithRandom(rsaServerPublicKey, context.getSecureRandom()));
-
-        try
-        {
-            byte[] encryptedPreMasterSecret = encoding.processBlock(premasterSecret, 0, premasterSecret.length);
-
-            if (TlsUtils.isSSL(context))
-            {
-                // TODO Do any SSLv3 servers actually expect the length?
-                output.write(encryptedPreMasterSecret);
-            }
-            else
-            {
-                TlsUtils.writeOpaque16(encryptedPreMasterSecret, output);
-            }
-        }
-        catch (InvalidCipherTextException e)
-        {
-            /*
-             * This should never happen, only during decryption.
-             */
-            throw new TlsFatalAlert(AlertDescription.internal_error);
-        }
-
-        return premasterSecret;
-    }
-
-    public static byte[] safeDecryptPreMasterSecret(TlsContext context, TlsEncryptionCredentials encryptionCredentials,
-        byte[] encryptedPreMasterSecret)
-    {
-        /*
-         * RFC 5246 7.4.7.1.
-         */
-
-        ProtocolVersion clientVersion = context.getClientVersion();
-
-        // TODO Provide as configuration option?
-        boolean versionNumberCheckDisabled = false;
-
-        /*
-         * See notes regarding Bleichenbacher/Klima attack. The code here implements the first
-         * construction proposed there, which is RECOMMENDED.
-         */
-        byte[] R = new byte[48];
-        context.getSecureRandom().nextBytes(R);
-
-        byte[] M = TlsUtils.EMPTY_BYTES;
-        try
-        {
-            M = encryptionCredentials.decryptPreMasterSecret(encryptedPreMasterSecret);
-        }
-        catch (Exception e)
-        {
-            /*
-             * In any case, a TLS server MUST NOT generate an alert if processing an
-             * RSA-encrypted premaster secret message fails, or the version number is not as
-             * expected. Instead, it MUST continue the handshake with a randomly generated
-             * premaster secret.
-             */
-        }
-
-        if (M.length != 48)
-        {
-            TlsUtils.writeVersion(clientVersion, R, 0);
-            return R;
-        }
-
-        /*
-         * If ClientHello.client_version is TLS 1.1 or higher, server implementations MUST
-         * check the version number [..].
-         */
-        if (versionNumberCheckDisabled && clientVersion.isEqualOrEarlierVersionOf(ProtocolVersion.TLSv10))
-        {
-            /*
-             * If the version number is TLS 1.0 or earlier, server implementations SHOULD
-             * check the version number, but MAY have a configuration option to disable the
-             * check.
-             */
-        }
-        else
-        {
-            /*
-             * Note that explicitly constructing the pre_master_secret with the
-             * ClientHello.client_version produces an invalid master_secret if the client
-             * has sent the wrong version in the original pre_master_secret.
-             */
-            TlsUtils.writeVersion(clientVersion, M, 0);
-        }
-
-        return M;
-    }
-}