基于时间的一次性密码算法

java GoogleAuth

GoogleAuth (opens new window)

Maven:

<dependency>
  <groupId>com.warrenstrange</groupId>
  <artifactId>googleauth</artifactId>
  <version>1.4.0</version>
</dependency>

Usage

GoogleAuthenticator gAuth = new GoogleAuthenticator();
boolean isCodeValid = gAuth.authorize(secretKey, password);

Clinet

GoogleAuthenticator gAuth = new GoogleAuthenticator();
int code = gAuth.getTotpPassword(secretKey);

python pyotp

pyotp (opens new window)

Google Authenticator Compatible

totp = pyotp.TOTP('base32secret3232')
totp.now() # => '492039'

# OTP verified for current time
totp.verify('492039') # => True
time.sleep(30)
totp.verify('492039') # => False