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.util.encoders;


Exception thrown if an attempt is made to decode invalid data, or some other failure occurs.

/**
 * Exception thrown if an attempt is made to decode invalid data, or some other failure occurs.
 */
public class DecoderException
    extends IllegalStateException
{
    private Throwable cause;

    DecoderException(String msg, Throwable cause)
    {
        super(msg);

        this.cause = cause;
    }

    public Throwable getCause()
    {
        return cause;
    }
}