/**
 * PNM signing + publish for the browser/Helia node (WS6.6).
 *
 * Until now the Helia side only subscribed to and decoded PNMs
 * (ui/runtime/pnm-flatbuffer.ts). This module adds the producer half,
 * byte-compatible with the Go node's dataset-publication PNM envelope
 * (sdn-server internal/storage/manifest.go BuildDatasetPublicationPNM /
 * internal/channels/pnm_verifier.go):
 *
 *  - size-prefixed $PNM FlatBuffer with MULTIFORMAT_ADDRESS ("/ipfs/<cid>"),
 *    PUBLISH_TIMESTAMP (RFC3339), CID, FILE_NAME, FILE_ID,
 *    SIGNATURE_TYPE "Ed25519", and SIGNATURE = hex(ed25519 over
 *    "SDN-DPM-PNM\0" + FILE_ID + "\0" + CID), signed with the wallet's
 *    Ed25519 key (native/WASM crypto boundary — no WebCrypto).
 *  - published on the gossipsub topic /spacedatanetwork/sds/PNM.fbs — the
 *    topic the Go node's EPM service consumes.
 */
export declare const PNM_SCHEMA = "PNM.fbs";
export declare const PNM_TOPIC = "/spacedatanetwork/sds/PNM.fbs";
/** Signature payload — must match Go datasetPublicationPNMSignaturePayload. */
export declare function pnmSignaturePayload(cid: string, fileId: string): Uint8Array;
export interface BuildSignedPnmOptions {
    /** Content id the PNM announces (e.g. a DPM manifest or record CID). */
    cid: string;
    /** SDS file identifier of the announced content (e.g. "$DPM", "EPHEMERIS"). */
    fileId: string;
    fileName?: string;
    publishedAt?: Date | string;
    multiformatAddress?: string;
    /** Ed25519 private key (wallet-derived) used to sign the announcement. */
    signingKey: Uint8Array;
}
/** Build + sign a size-prefixed $PNM envelope (Go-verifier compatible). */
export declare function buildSignedPnm(options: BuildSignedPnmOptions): Promise<Uint8Array>;
export interface SignedPnmEvidence {
    cid: string;
    fileId: string;
    signatureType: string;
    signature: Uint8Array;
    multiformatAddress?: string;
    publishTimestamp?: string;
}
/** Decode + verify a signed PNM envelope (mirror of the Go verifier). */
export declare function verifySignedPnm(pnmBytes: Uint8Array, providerPublicKey?: Uint8Array): Promise<SignedPnmEvidence>;
/** Anything that can publish raw bytes to a gossipsub topic. */
export interface RawTopicPublisher {
    publish(topic: string, data: Uint8Array): Promise<unknown>;
}
/** Publish a signed PNM on the canonical PNM topic. */
export declare function publishSignedPnm(publisher: RawTopicPublisher, pnmBytes: Uint8Array, topic?: string): Promise<string>;
/** Build, sign, and publish in one step. */
export declare function signAndPublishPnm(publisher: RawTopicPublisher, options: BuildSignedPnmOptions): Promise<{
    topic: string;
    pnmBytes: Uint8Array;
}>;
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