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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 1.6. 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.jcajce;

import java.security.AlgorithmParameterGenerator;
import java.security.AlgorithmParameters;
import java.security.KeyFactory;
import java.security.KeyPairGenerator;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.PrivateKey;
import java.security.Signature;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;

import javax.crypto.Cipher;
import javax.crypto.KeyAgreement;
import javax.crypto.KeyGenerator;
import javax.crypto.Mac;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;

import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.operator.AsymmetricKeyUnwrapper;
import org.bouncycastle.operator.SymmetricKeyUnwrapper;

public interface JcaJceHelper
{
    Cipher createCipher(
        String algorithm)
        throws NoSuchAlgorithmException, NoSuchPaddingException, NoSuchProviderException;

    Mac createMac(String algorithm)
        throws NoSuchAlgorithmException, NoSuchProviderException;

    KeyAgreement createKeyAgreement(String algorithm)
        throws NoSuchAlgorithmException, NoSuchProviderException;

    AlgorithmParameterGenerator createAlgorithmParameterGenerator(String algorithm)
        throws NoSuchAlgorithmException, NoSuchProviderException;

    AlgorithmParameters createAlgorithmParameters(String algorithm)
        throws NoSuchAlgorithmException, NoSuchProviderException;

    KeyGenerator createKeyGenerator(String algorithm)
        throws NoSuchAlgorithmException, NoSuchProviderException;

    KeyFactory createKeyFactory(String algorithm)
        throws NoSuchAlgorithmException, NoSuchProviderException;

    KeyPairGenerator createKeyPairGenerator(String algorithm)
        throws NoSuchAlgorithmException, NoSuchProviderException;

    MessageDigest createDigest(String algorithm)
        throws NoSuchAlgorithmException, NoSuchProviderException;

    Signature createSignature(String algorithm)
        throws NoSuchAlgorithmException, NoSuchProviderException;

    CertificateFactory createCertificateFactory(String algorithm)
        throws NoSuchAlgorithmException, NoSuchProviderException, CertificateException;

    AsymmetricKeyUnwrapper createAsymmetricUnwrapper(AlgorithmIdentifier keyEncryptionAlgorithm, PrivateKey keyEncryptionKey);

    SymmetricKeyUnwrapper createSymmetricUnwrapper(AlgorithmIdentifier keyEncryptionAlgorithm, SecretKey keyEncryptionKey);
}