export type PdfEncryptionAlgorithm = "aes-128" | "aes-256";
export interface PdfPermissionFlags {
    print?: boolean;
    modify?: boolean;
    copy?: boolean;
    annotate?: boolean;
    fillForms?: boolean;
    extract?: boolean;
    assemble?: boolean;
    printHighQuality?: boolean;
}
export interface PdfEncryptionConfig {
    userPassword: string;
    ownerPassword?: string;
    permissions?: PdfPermissionFlags;
    algorithm?: PdfEncryptionAlgorithm;
}
export interface PdfEncryptionResult {
    encryptDict: Record<string, import("../pdf-objects.js").PDFValue>;
    fileId: [Buffer, Buffer];
    encryptString(data: Buffer, objectNumber: number, generationNumber: number): Buffer;
    encryptStream(data: Buffer, objectNumber: number, generationNumber: number): Buffer;
}
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