# vs-authenticator

This repo holds logic for generating TOTP () for 2FA

By default TOTP verification is based on 2 time step, meaning OTP is valid for 60 seconds. If there is need to validate TOTP from past then provide prevTimeSteps option

## Usage

```
const VsAuthenticator = required("vs-authenticator");

const secret = VsAuthenticator.generateSecret();
const totp = VsAuthenticator.generateTOTP(secret.base32Secret);

// To verify TOTP provided by user
const isValidTOTP = VsAuthenticator.verifyTOTP( userProvidedTOTP, secret.base32Secret);

/**
* To verify past TOTP's
* Verify TOTP's from last 90 seconds ( as default step is of 30 seconds, 90 /30 = 3 )
*/
const isValidTOTP = VsAuthenticator.verifyTOTP( userProvidedTOTP, secret.base32Secret, 3);
```


This repo holds helper methods to setup TOTP and generating TOTP, HOTP. 

Supply Chain Attack on Axios Pulls Malicious Dependency from npm

vs-authenticator

This repo holds helper methods to setup TOTP and generating TOTP, HOTP

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vs-authenticator