export declare function encryptFileAttachment(file: File): Promise<{
    key: Uint8Array;
    ciphertext: Uint8Array;
    digest: Uint8Array;
}>;
export declare function encryptLinkPreview(): Promise<void>;
export declare function encryptQuote(): Promise<void>;
export declare function encryptAttachmentData(plaintext: Uint8Array, keys: Uint8Array, iv: Uint8Array): Promise<{
    ciphertext: Uint8Array;
    digest: Uint8Array;
}>;