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The Bouncy Castle Java CMS and S/MIME APIs for handling the CMS and S/MIME protocols. This jar contains CMS and S/MIME APIs for JDK 1.5. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs. If the S/MIME API is used, the JavaMail API and the Java activation framework will also be needed.

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package org.bouncycastle.cms;

import java.security.GeneralSecurityException;
import java.security.Provider;
import java.security.SecureRandom;

import javax.crypto.SecretKey;

import org.bouncycastle.asn1.cms.RecipientInfo;

interface RecipientInfoGenerator
{
    /**
     * Generate a RecipientInfo object for the given key.
     * @param key the SecretKey to encrypt
     * @param random a source of randomness
     * @param prov the default provider to use
     * @return a RecipientInfo object for the given key
     * @throws GeneralSecurityException
     */
    RecipientInfo generate(SecretKey key, SecureRandom random,
        Provider prov) throws GeneralSecurityException;
}