import { VerifiedEvent } from "nostr-tools";
import { SenderKeyState } from "./SenderKey";
/**
 * Parsed one-to-many outer payload.
 *
 * Outer content is: base64(keyId_be || messageNumber_be || nip44_ciphertext_bytes)
 */
export declare class OneToManyMessage {
    readonly keyId: number;
    readonly messageNumber: number;
    readonly ciphertext: Uint8Array;
    constructor(keyId: number, messageNumber: number, ciphertext: Uint8Array);
    decrypt(state: SenderKeyState): string;
}
/**
 * A lightweight helper for "one-to-many" publishing:
 *
 * - Outer Nostr event is authored by a sender-controlled pubkey (eg per-group sender keypair).
 * - Outer content is a compact base64 payload: `keyId_be || msgNum_be || nip44_ciphertext_bytes`.
 * - Ciphertext bytes are produced/consumed by SenderKeyState.
 */
export declare class OneToManyChannel {
    private readonly outerKind;
    constructor(outerKind?: number);
    static default(): OneToManyChannel;
    outerEventKind(): number;
    buildOuterContent(keyId: number, messageNumber: number, ciphertextBytes: Uint8Array): string;
    parseOuterContent(content: string): OneToManyMessage;
    encryptToOuterEvent(senderEventSecretKey: Uint8Array, senderKey: SenderKeyState, innerPlaintext: string, createdAt: number): VerifiedEvent;
}
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