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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. 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.

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package org.bouncycastle.mime.smime;

import java.io.IOException;
import java.io.InputStream;

import org.bouncycastle.mime.BasicMimeParser;
import org.bouncycastle.mime.Headers;
import org.bouncycastle.mime.MimeParser;
import org.bouncycastle.mime.MimeParserProvider;
import org.bouncycastle.operator.DigestCalculatorProvider;

public class SMimeParserProvider
    implements MimeParserProvider
{
    private final String defaultContentTransferEncoding;
    private final DigestCalculatorProvider digestCalculatorProvider;

    public SMimeParserProvider(String defaultContentTransferEncoding, DigestCalculatorProvider digestCalculatorProvider)
    {
        this.defaultContentTransferEncoding = defaultContentTransferEncoding;
        this.digestCalculatorProvider = digestCalculatorProvider;
    }

    public MimeParser createParser(InputStream source)
        throws IOException
    {
        return new BasicMimeParser(new SMimeParserContext(defaultContentTransferEncoding, digestCalculatorProvider),
            SMimeUtils.autoBuffer(source));
    }

    public MimeParser createParser(Headers headers, InputStream source)
        throws IOException
    {
        return new BasicMimeParser(new SMimeParserContext(defaultContentTransferEncoding, digestCalculatorProvider),
            headers, SMimeUtils.autoBuffer(source));
    }
}