import { SupportedAlgorithm, SecretSize } from './types';
export declare const NitroTotpConstants: {
    readonly DEFAULT_DIGITS: 6;
    readonly DEFAULT_PERIOD: 30;
    readonly DEFAULT_SECRET_SIZE: SecretSize.STANDARD;
    readonly DEFAULT_WINDOW: 1;
    readonly DEFAULT_COUNTER: 0;
    readonly DEFAULT_ALGORITHM: SupportedAlgorithm.SHA1;
};
export declare const SecretSizeBytes: Record<SecretSize, number>;
export declare const defaultOptions: {
    readonly issuer: "";
    readonly label: "OTP Auth";
    readonly size: number;
    readonly digits: 6;
    readonly period: 30;
    readonly counter: 0;
    readonly window: 1;
};
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