import type { CryptoOperations, RequestContext } from '../../interfaces/core.js';
import type { DecryptionRequest, EncryptionRequest, EncryptionResult } from '../../types.js';
/**
 * Local encryption/decryption implementation
 * Single responsibility: manage encryption and decryption operations
 * Does NOT handle signing, key management, or policy enforcement
 */
export declare class LocalCryptoOperations implements CryptoOperations {
    private readonly defaultKeyId;
    private readonly keys;
    private readonly registry;
    constructor(defaultKeyId: string);
    encrypt(request: EncryptionRequest & RequestContext): Promise<EncryptionResult>;
    decrypt(request: DecryptionRequest & RequestContext): Promise<Uint8Array>;
    hasKey(keyId: string): boolean;
    setKey(keyId: string, key: Buffer): void;
    getKey(keyId: string): Buffer | undefined;
}
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