/**
 * @fileoverview Encryption Error Types for BrightChat E2E Encryption
 *
 * Error hierarchy for encryption operations including key wrapping,
 * message decryption, attachment validation, and key epoch management.
 *
 * @see Requirements 12.1, 12.2, 12.3, 12.4, 11.4
 */
/**
 * Thrown when a member's ECIES public key is not found during key wrapping.
 *
 * @see Requirements 12.1, 12.2
 */
export declare class MissingPublicKeyError extends Error {
    readonly memberId: string;
    constructor(memberId: string);
}
/**
 * Thrown when ECIES decryption of a wrapped key fails.
 *
 * @see Requirement 12.3
 */
export declare class KeyUnwrapError extends Error {
    readonly contextId: string;
    readonly memberId: string;
    readonly epoch: number;
    constructor(contextId: string, memberId: string, epoch: number);
}
/**
 * Thrown when AES decryption of message content fails.
 *
 * @see Requirements 12.3, 12.4
 */
export declare class MessageDecryptionError extends Error {
    readonly contextId: string;
    readonly messageId: string;
    readonly keyEpoch: number;
    constructor(contextId: string, messageId: string, keyEpoch: number);
}
/**
 * Thrown when an attachment exceeds the configured maximum file size.
 *
 * @see Requirement 11.4
 */
export declare class AttachmentTooLargeError extends Error {
    readonly fileName: string;
    readonly size: number;
    readonly maxSize: number;
    constructor(fileName: string, size: number, maxSize: number);
}
/**
 * Thrown when a message exceeds the configured maximum number of attachments.
 *
 * @see Requirement 11.4
 */
export declare class TooManyAttachmentsError extends Error {
    readonly count: number;
    readonly maxCount: number;
    constructor(count: number, maxCount: number);
}
/**
 * Thrown when a message references a key epoch that does not exist in the context.
 *
 * @see Requirement 12.3
 */
export declare class KeyEpochNotFoundError extends Error {
    readonly contextId: string;
    readonly keyEpoch: number;
    constructor(contextId: string, keyEpoch: number);
}
//# sourceMappingURL=encryptionErrors.d.ts.map