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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.8 and up. The APIs are designed primarily to be used in conjunction with the BC LTS provider but may also be used with other providers providing cryptographic services.

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package org.bouncycastle.cms.jcajce;

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

import javax.crypto.SecretKey;

import org.bouncycastle.asn1.cms.KEKIdentifier;
import org.bouncycastle.cms.KEKRecipientInfoGenerator;
import org.bouncycastle.operator.jcajce.JceSymmetricKeyWrapper;

public class JceKEKRecipientInfoGenerator
    extends KEKRecipientInfoGenerator
{
    public JceKEKRecipientInfoGenerator(KEKIdentifier kekIdentifier, SecretKey keyEncryptionKey)
    {
        super(kekIdentifier, new JceSymmetricKeyWrapper(keyEncryptionKey));
    }

    public JceKEKRecipientInfoGenerator(byte[] keyIdentifier, SecretKey keyEncryptionKey)
    {
        this(new KEKIdentifier(keyIdentifier, null, null), keyEncryptionKey);
    }

    public JceKEKRecipientInfoGenerator setProvider(Provider provider)
    {
        ((JceSymmetricKeyWrapper)this.wrapper).setProvider(provider);

        return this;
    }

    public JceKEKRecipientInfoGenerator setProvider(String providerName)
    {
        ((JceSymmetricKeyWrapper)this.wrapper).setProvider(providerName);

        return this;
    }

    public JceKEKRecipientInfoGenerator setSecureRandom(SecureRandom random)
    {
        ((JceSymmetricKeyWrapper)this.wrapper).setSecureRandom(random);

        return this;
    }
}