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Spongy Castle is a package-rename (org.bouncycastle.* to org.spongycastle.*) of Bouncy Castle intended for the Android platform. Android unfortunately ships with a stripped-down version of Bouncy Castle, which prevents easy upgrades - Spongy Castle overcomes this and provides a full, up-to-date version of the Bouncy Castle cryptographic libs.

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package org.spongycastle.jcajce.provider.config;

import org.spongycastle.asn1.ASN1ObjectIdentifier;
import org.spongycastle.jcajce.provider.util.AsymmetricKeyInfoConverter;

/**
 * Implemented by the BC provider. This allows setting of hidden parameters,
 * such as the ImplicitCA parameters from X.962, if used.
 */
public interface ConfigurableProvider
{
    /**
     * Elliptic Curve CA parameters - thread local version
     */
    static final String THREAD_LOCAL_EC_IMPLICITLY_CA = "threadLocalEcImplicitlyCa";

    /**
     * Elliptic Curve CA parameters - thread local version
     */
    static final String EC_IMPLICITLY_CA = "ecImplicitlyCa";

    /**
     * Diffie-Hellman Default Parameters - thread local version
     */
    static final String THREAD_LOCAL_DH_DEFAULT_PARAMS = "threadLocalDhDefaultParams";

    /**
     * Diffie-Hellman Default Parameters - VM wide version
     */
    static final String DH_DEFAULT_PARAMS = "DhDefaultParams";

    void setParameter(String parameterName, Object parameter);

    void addAlgorithm(String key, String value);

    boolean hasAlgorithm(String type, String name);

    void addKeyInfoConverter(ASN1ObjectIdentifier oid, AsymmetricKeyInfoConverter keyInfoConverter);
}