/**
 * Block Format Detection Service
 *
 * This service provides functionality for detecting and validating block formats
 * based on magic bytes, version, and CRC8 integrity checks.
 *
 * @module services/blockFormatService
 */
import { StructuredBlockType } from '../constants';
import { BlockType } from '../enumerations/blockType';
/**
 * Result of block format detection
 */
export interface BlockFormatResult {
    /**
     * Whether the block format is valid
     */
    isValid: boolean;
    /**
     * The detected block type
     */
    blockType: BlockType | StructuredBlockType;
    /**
     * The header version (for structured blocks)
     */
    version: number;
    /**
     * Error message if format is invalid
     */
    error?: string;
    /**
     * Whether this is a structured block (has 0xBC prefix)
     */
    isStructured?: boolean;
    /**
     * Whether this appears to be encrypted data (has 0x04 ECIES magic)
     */
    isEncrypted?: boolean;
}
export declare function detectBlockFormat(data: Uint8Array, creatorIdLength?: number): BlockFormatResult;
/**
 * Check whether raw CBL data has a TarballCBL structured block header.
 *
 * This is a lightweight check that inspects only the first two bytes:
 *   byte 0 = 0xBC (magic prefix)
 *   byte 1 = StructuredBlockType.TarballCBL (0x07)
 *
 * @param data - Raw block data
 * @returns `true` if the data starts with a TarballCBL header
 *
 * @see Requirement 6.2 — block detection logic recognises TarballCBL
 */
export declare function isTarballCblData(data: Uint8Array): boolean;
//# sourceMappingURL=blockFormatService.d.ts.map