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The Bouncy Castle Java CMS and S/MIME APIs for handling the CMS and S/MIME protocols. This jar contains CMS and S/MIME APIs for JDK 1.6. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs. If the S/MIME API is used, the JavaMail API and the Java activation framework will also be needed.

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package org.bouncycastle.sasn1;

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


class DefiniteLengthInputStream
    extends LimitedInputStream
{
    private int               _length;
    
    DefiniteLengthInputStream(
        InputStream in,
        int         length)
    {
        super(in);
        
        this._length = length;
    }

    public int read()
        throws IOException
    {
        if (_length-- > 0)
        {
            return _in.read();
        }
        else
        {
            setParentEofDetect(true);
            
            return -1;
        }
    }
}