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.
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package org.bouncycastle.asn1;

import java.io.IOException;


Interface to parse ASN.1 ApplicationSpecific objects.

/**
 * Interface to parse ASN.1 ApplicationSpecific objects.
 */
public interface ASN1ApplicationSpecificParser
    extends ASN1Encodable, InMemoryRepresentable
{
    
Read the next object in the parser.

Throws:
Returns:an ASN1Encodable
/**
     * Read the next object in the parser.
     *
     * @return an ASN1Encodable
     * @throws IOException on a parsing or decoding error.
     */
    ASN1Encodable readObject()
        throws IOException;
}