/**
 * constants.ts — Shared constants for all format handlers
 */
/** Magic bytes appended at end of Tier-2 trailer: ASCII "MAJIKSIG" */
export declare const TRAILER_MAGIC: Uint8Array<ArrayBuffer>;
/** Total trailer suffix length: payload_length (8 bytes LE) + magic (8 bytes) = 16 bytes */
export declare const TRAILER_SUFFIX_LENGTH = 16;
/** Key name used in all text-based metadata fields */
export declare const SIGNATURE_KEY = "majik-signature";
/** Namespace URI used in XMP / XML-based metadata */
export declare const MAJIK_NAMESPACE = "https://signature.majikah.solutions";
/** PNG chunk type for embedded signature */
export declare const PNG_CHUNK_TYPE = "iTXt";
/** PNG keyword for iTXt chunk */
export declare const PNG_KEYWORD = "majik-signature";
/** RIFF chunk FourCC for WAV/AVI embedding */
export declare const RIFF_CHUNK_FOURCC = "majk";
/** ID3 TXXX frame description */
export declare const ID3_TXXX_DESCRIPTION = "MAJIK-SIGNATURE";
/** ZIP entry name for Office formats (DOCX/XLSX/PPTX) */
export declare const OFFICE_ZIP_ENTRY = "majik-signature.json";
/** MP4/MOV box type for custom metadata */
export declare const MP4_BOX_TYPE = "majk";
/** Custom metadata key for MKV/WebM */
export declare const MKV_TAG_NAME = "MAJIK_SIGNATURE";
export declare const CANONICAL_MTIME: Date;