import { ECIESService, PlatformID } from '@digitaldefiance/ecies-lib';
/**
 * Get browser-compatible runtime configuration with GuidV4Provider
 * This is the browser equivalent of getNodeRuntimeConfiguration() from node-ecies-lib
 */
export declare function getBrowserRuntimeConfiguration(): import("@digitaldefiance/ecies-lib").IConstants;
/**
 * Create ECIESService with GuidV4Provider configuration for browser compatibility
 */
export declare function createECIESService<TID extends PlatformID = Uint8Array>(): ECIESService<TID>;
/**
 * Calculate overhead for single recipient encryption using ecies-lib constants.
 *
 * Formula: idSize + ECIES.WITH_LENGTH.FIXED_OVERHEAD_SIZE
 *        = idSize + 72
 *
 * BrightChain uses WITH_LENGTH format for single-recipient encryption because:
 * 1. The data length field enables streaming decryption
 * 2. It's only 8 bytes more than BASIC
 * 3. Block sizes are known, making length verification valuable
 *
 * @param idSize - Size of recipient ID in bytes (default 16 for GUID)
 * @returns Total overhead in bytes
 *
 * @see Requirements 2.3
 */
export declare function calculateSingleRecipientOverhead(idSize?: number): number;
/**
 * Calculate overhead for multiple recipient encryption using ecies-lib constants.
 *
 * Formula: FIXED_OVERHEAD_SIZE + DATA_LENGTH_SIZE + RECIPIENT_COUNT_SIZE + (recipientCount * (idSize + ENCRYPTED_KEY_SIZE))
 *        = 64 + 8 + 2 + (recipientCount * (idSize + 60))
 *        = 74 + (recipientCount * (idSize + 60))
 *
 * @param recipientCount - Number of recipients
 * @param includeMessageOverhead - Whether to include the fixed message overhead (default true)
 * @param idSize - Size of recipient ID in bytes (default ECIES.MULTIPLE.RECIPIENT_ID_SIZE = 12)
 * @returns Total overhead in bytes
 *
 * @see Requirements 6.1, 6.2, 6.3, 6.4
 */
export declare function calculateECIESMultipleRecipientOverhead(recipientCount: number, includeMessageOverhead?: boolean, idSize?: number): number;
/**
 * Backported from node-ecies-lib: Parse multi-encrypted header
 */
export declare function parseMultiEncryptedHeader(_data: Uint8Array): unknown;
/**
 * Backported from node-ecies-lib: Build multi-recipient header
 */
export declare function buildECIESMultipleRecipientHeader(_data: unknown): Uint8Array;
/**
 * Backported from node-ecies-lib: Decrypt multiple ECIE for recipient
 */
export declare function decryptMultipleECIEForRecipient(_encryptedData: unknown, _recipient: unknown): Uint8Array;
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