http://www.bouncycastle.org/java.html: The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.
  • The Legion of the Bouncy Castle Inc. 
package org.bouncycastle.cert.crmf;


An encrypted value padder is used to make sure that prior to a value been
encrypted the data is padded to a standard length.

/**
 * An encrypted value padder is used to make sure that prior to a value been
 * encrypted the data is padded to a standard length.
 */
public interface EncryptedValuePadder
{
    
Return a byte array of padded data.

Params:
  • data – the data to be padded.
Returns:a padded byte array containing data.
/**
     * Return a byte array of padded data.
     *
     * @param data the data to be padded.
     * @return a padded byte array containing data.
     */
    byte[] getPaddedData(byte[] data);

    
Return a byte array of with padding removed.

Params:
  • paddedData – the data to be padded.
Returns:an array containing the original unpadded data.
/**
     * Return a byte array of with padding removed.
     *
     * @param paddedData the data to be padded.
     * @return an array containing the original unpadded data.
     */
    byte[] getUnpaddedData(byte[] paddedData);
}