***
title: "DefaultVerificationTokenStrategy"
generated: true
---------------
The default VerificationTokenStrategy which generates a token consisting of the
base64-encoded current time concatenated with a random id. The token is considered
valid if the current time is within the configured `verificationTokenDuration` of the
time encoded in the token.
```ts title="Signature"
class DefaultVerificationTokenStrategy implements VerificationTokenStrategy {
init(injector: Injector) => ;
generateVerificationToken(_ctx: RequestContext) => string;
verifyVerificationToken(_ctx: RequestContext, token: string) => boolean;
}
```
* Implements: [`VerificationTokenStrategy`](/current/core/reference/typescript-api/auth/verification-token-strategy#verificationtokenstrategy)
### init
\
Injector) => `} />
### generateVerificationToken
\RequestContext) => string`} />
### verifyVerificationToken
\RequestContext, token: string) => boolean`} />