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package org.bouncycastle.jce.cert;
import java.security.InvalidAlgorithmParameterException;
/**
* The Service Provider Interface (SPI) for the CertPathBuilder
* class. All CertPathBuilder implementations must include a class
* (the SPI class) that extends this class (CertPathBuilderSpi) and
* implements all of its methods. In general, instances of this class
* should only be accessed through the CertPathBuilder class. For
* details, see the Java Cryptography Architecture.<br />
* <br />
* <b>Concurrent Access</b><br />
* <br />
* Instances of this class need not be protected against concurrent
* access from multiple threads. Threads that need to access a single
* CertPathBuilderSpi instance concurrently should synchronize amongst
* themselves and provide the necessary locking before calling the
* wrapping CertPathBuilder object.<br />
* <br />
* However, implementations of CertPathBuilderSpi may still encounter
* concurrency issues, since multiple threads each manipulating a
* different CertPathBuilderSpi instance need not synchronize.
**/
public abstract class CertPathBuilderSpi
extends Object
{
/**
* The default constructor.
*/
public CertPathBuilderSpi() {}
/**
* Attempts to build a certification path using the specified
* algorithm parameter set.
*
* @param params the algorithm parameters
*
* @return the result of the build algorithm
*
* @exception CertPathBuilderException if the builder is unable
* to construct a certification path that satisfies the
* specified
* @exception parametersInvalidAlgorithmParameterException if the
* specified parameters are inappropriate for this CertPathBuilder
*/
public abstract CertPathBuilderResult engineBuild(CertPathParameters params)
throws CertPathBuilderException,
InvalidAlgorithmParameterException;
}
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