# Password Hasher

This Service is for NestJs and can create a Hash of a Password and verify it.

## Install

```bash
npm i --save @apihub24/password-hasher
```

## Dependencies

| Dependency     | Description                                                                                       |
| -------------- | ------------------------------------------------------------------------------------------------- |
| @nestjs/config | use the NestJs Config Module to get the Password Salt Rounds with key _PASSWORD_HASH_SALT_ROUNDS_ |

| Exported Injection Keys    |
| -------------------------- |
| @apihub24/password_service |

## Usage

```typescript
// register the PasswordHashService as Provider in a NestJs Module
import { PasswordHashService } from '@apihub24/password-hasher';

@Module({
  // import the ConfigModule! not forget to set the PASSWORD_HASH_SALT_ROUNDS in Config otherwise 10 was used
  imports: [ConfigModule.forRoot()]
  providers: [PasswordHashService],
})
...

// inject the PasswordHashService
export class SomeOtherService {
  constructor(@Inject(PasswordHashService) passwordHashService: PasswordHashService) {}

  async test(password: string) {
    // generate the hash
    const hash = await this.passwordHashService(password);

    // compare a plaintext Password with Hash
    await this.passwordHashService.verify(password, hash);
  }
}
```