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 * Copyright (C) 2026, Leo Galambos
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 *    This product includes software developed by the Egothor project.
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/**
 * Provider contracts for context construction and exact key operations.
 *
 * <p>
 * Algorithms bind each supported role to a {@link ContextFactoryKS}. Context
 * construction is an in-memory operation; stream attachment and processing are
 * responsible for reporting {@link java.io.IOException}.
 * </p>
 *
 * <p>
 * Key capabilities are registered independently through
 * {@link SymmetricKeyGenerator}, {@link SymmetricKeyImporter},
 * {@link AsymmetricKeyPairGenerator}, {@link PublicKeyImporter}, and
 * {@link PrivateKeyImporter}. A provider registers only the operations it
 * implements, so capability lookup fails before invocation instead of returning
 * an object with unsupported methods.
 * </p>
 *
 * <p>
 * SPI implementations should be stateless or otherwise safe for concurrent
 * lookup and invocation. Created cryptographic contexts remain operation-local
 * and are not necessarily thread-safe.
 * </p>
 *
 * @since 1.0
 */
package zeroecho.core.spi;
