http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8.
  • The Legion of the Bouncy Castle Inc. 
package org.bouncycastle.x509;

import org.bouncycastle.x509.util.StreamParsingException;

import java.io.InputStream;
import java.util.Collection;


This abstract class defines the service provider interface (SPI) for
X509StreamParser.

See Also:
  • X509StreamParser
/**
 * This abstract class defines the service provider interface (SPI) for
 * X509StreamParser.
 *
 * @see org.bouncycastle.x509.X509StreamParser
 *
 */
public abstract class X509StreamParserSpi
{
    
Initializes this stream parser with the input stream.

Params:
  • in – The input stream.
/**
     * Initializes this stream parser with the input stream.
     *
     * @param in The input stream.
     */
    public abstract void engineInit(InputStream in);

    
Returns the next X.509 object of the type of this SPI from the given
input stream.

Throws:
Returns:the next X.509 object in the stream or null if the
        end of the stream is reached.
/**
     * Returns the next X.509 object of the type of this SPI from the given
     * input stream.
     *
     * @return the next X.509 object in the stream or <code>null</code> if the
     *         end of the stream is reached.
     * @exception StreamParsingException
     *                if the object cannot be created from input stream.
     */
    public abstract Object engineRead() throws StreamParsingException;

    
Returns all X.509 objects of the type of this SPI from
the given input stream.

Throws:
Returns:A collection of all X.509 objects in the input stream or
        null if the end of the stream is reached.
/**
     * Returns all X.509 objects of the type of this SPI from
     * the given input stream.
     *
     * @return A collection of all X.509 objects in the input stream or
     *         <code>null</code> if the end of the stream is reached.
     * @exception StreamParsingException
     *                if an object cannot be created from input stream.
     */
    public abstract Collection engineReadAll() throws StreamParsingException;
}