export declare class EncryptionSettingsProperties {
    private readonly _algorithm;
    private readonly _bitLength;
    private readonly _encryptAttachmentsOnly;
    private readonly _encryptMetadata;
    private readonly _hasOwnerPassword;
    private readonly _hasUserPassword;
    constructor(encryption: any);
    get onlyAttachmentsEncrypted(): boolean;
    get isOwnerPasswordSet(): boolean;
    get isMetadataEncrypted(): boolean;
    get isUserPasswordSet(): boolean;
    get bitLength(): number;
    get algorithm(): string;
}