org.keycloak.models.utils.TimeBasedOTP クラス

org.keycloak.models.utils.TimeBasedOTP の継承関係図

org.keycloak.models.utils.TimeBasedOTP 連携図

クラス
class	Clock

公開メンバ関数
	TimeBasedOTP ()
	TimeBasedOTP (String algorithm, int numberDigits, int timeIntervalInSeconds, int lookAheadWindow)
String	generateTOTP (String secretKey)
boolean	validateTOTP (String token, byte[] secret)
void	setCalendar (Calendar calendar)

静的公開変数類
static final int	DEFAULT_INTERVAL_SECONDS = 30
static final int	DEFAULT_DELAY_WINDOW = 1

非公開変数類
Clock	clock

詳解

TOTP: Time-based One-time Password Algorithm Based on http://tools.ietf.org/html/draft-mraihi-totp-timebased-06

著者

anil saldhana

から

Sep 20, 2010

構築子と解体子

TimeBasedOTP() [1/2]

org.keycloak.models.utils.TimeBasedOTP.TimeBasedOTP ( )

inline

                          {
        this(DEFAULT_ALGORITHM, DEFAULT_NUMBER_DIGITS, DEFAULT_INTERVAL_SECONDS, DEFAULT_DELAY_WINDOW);
    }

TimeBasedOTP() [2/2]

org.keycloak.models.utils.TimeBasedOTP.TimeBasedOTP ( String  algorithm, int  numberDigits, int  timeIntervalInSeconds, int  lookAheadWindow  )

inline

引数

algorithm	the encryption algorithm
numberDigits	the number of digits for tokens
timeIntervalInSeconds	the number of seconds a token is valid
lookAheadWindow	the number of previous intervals that should be used to validate tokens.

                                                                                                            {
        super(numberDigits, algorithm, lookAheadWindow);
        this.clock = new Clock(timeIntervalInSeconds);
    }

関数詳解

generateTOTP()

String org.keycloak.models.utils.TimeBasedOTP.generateTOTP ( String  secretKey )

inline

Generates a token.

引数

secretKey

the secret key to derive the token from.

                                                 {
        long T = this.clock.getCurrentInterval();

        String steps = Long.toHexString(T).toUpperCase();

        // Just get a 16 digit string
        while (steps.length() < 16)
            steps = "0" + steps;

        return generateOTP(secretKey, steps, this.numberDigits, this.algorithm);
    }

setCalendar()

void org.keycloak.models.utils.TimeBasedOTP.setCalendar ( Calendar  calendar )

inline

                                               {
        this.clock.setCalendar(calendar);
    }

validateTOTP()

boolean org.keycloak.models.utils.TimeBasedOTP.validateTOTP ( String  token, byte []  secret  )

inline

Validates a token using a secret key.

引数

token	OTP string to validate
secret	Shared secret

戻り値

                                                             {
        long currentInterval = this.clock.getCurrentInterval();

        for (int i = this.lookAheadWindow; i >= 0; --i) {
            String steps = Long.toHexString(currentInterval - i).toUpperCase();

            // Just get a 16 digit string
            while (steps.length() < 16)
                steps = "0" + steps;

            String candidate = generateOTP(new String(secret), steps, this.numberDigits, this.algorithm);

            if (candidate.equals(token)) {
                return true;
            }
        }

        return false;
    }

メンバ詳解

clock

Clock org.keycloak.models.utils.TimeBasedOTP.clock

private

DEFAULT_DELAY_WINDOW

final int org.keycloak.models.utils.TimeBasedOTP.DEFAULT_DELAY_WINDOW = 1

static

DEFAULT_INTERVAL_SECONDS

final int org.keycloak.models.utils.TimeBasedOTP.DEFAULT_INTERVAL_SECONDS = 30

static

---

このクラス詳解は次のファイルから抽出されました:

• D:/AppData/doxygen/keycloak/spi-private/src/server-spi-private/src/main/java/org/keycloak/models/utils/TimeBasedOTP.java