import type { ValidateOptions } from '../types.js';
export interface ParsedAuthorization {
    message: string;
    /** The raw 64-byte signature over `message`. */
    signature: Uint8Array;
    /** Unix milliseconds, when the string carries a time. */
    timestamp?: number;
}
/**
 * Splits a `message<separator>signature[<separator>timestamp]` authorization
 * string, as `generate` produces, into its parts. With `expected_message` the
 * message may itself contain the separator, since its length is then known.
 */
export declare function parseAuthorization(value: string, options?: Partial<Pick<ValidateOptions, 'separator' | 'expected_message'>>): ParsedAuthorization;
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