org.bouncycastle.tls.crypto.impl.jcajce.JcaTlsStreamSigner Maven / Gradle / Ivy

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The Bouncy Castle Java APIs for the TLS, including a JSSE provider. The APIs are designed primarily to be used in conjunction with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified and used appropriately.

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package org.bouncycastle.tls.crypto.impl.jcajce;

import java.io.IOException;
import java.io.OutputStream;
import java.security.Signature;
import java.security.SignatureException;

import org.bouncycastle.tls.AlertDescription;
import org.bouncycastle.tls.TlsFatalAlert;
import org.bouncycastle.tls.crypto.TlsStreamSigner;

class JcaTlsStreamSigner
    implements TlsStreamSigner
{
    private final Signature signer;
    private final OutputStream output;

    JcaTlsStreamSigner(Signature signer)
    {
        this.signer = signer;
        this.output = OutputStreamFactory.createStream(signer);
    }

    public OutputStream getOutputStream() throws IOException
    {
        return output;
    }

    public byte[] getSignature() throws IOException
    {
        try
        {
            return signer.sign();
        }
        catch (SignatureException e)
        {
            throw new TlsFatalAlert(AlertDescription.internal_error, e);
        }
    }
}