import type { StreamableSignatureSuite } from './types.js';
export declare class VerifyStream {
    private readonly suite;
    private readonly pk;
    private readonly expectedCtx;
    private state;
    private headerBuf;
    private payloadChunks;
    private payloadHasher;
    private payloadRemaining;
    private sigBuf;
    constructor(suite: StreamableSignatureSuite, pk: Uint8Array, ctx: Uint8Array);
    /**
     * Feed bytes from the wire. Header parsing is byte-by-byte tolerant;
     * payload bytes accumulate up to the wire-declared payload_len; the
     * trailing sig bytes accumulate until finalize.
     */
    update(chunk: Uint8Array): void;
    /**
     * Verify the buffered signature. Returns the payload on success.
     * Throws and wipes the buffered payload on verification failure.
     */
    finalize(): Uint8Array;
    /** Wipe all internal state. Idempotent. */
    dispose(): void;
    private consumeHeaderBytes;
    private consumePayloadBytes;
    private consumeSigBytes;
    private wipeBuffers;
}