[Home](./index.md) > [@firebase/auth](./auth.md) > [EmailAuthCredential](./auth.emailauthcredential.md) ## EmailAuthCredential class Interface that represents the credentials returned by [EmailAuthProvider](./auth.emailauthprovider.md) for [ProviderId.PASSWORD](./auth.providerid.password.md) Signature: ```typescript export declare class EmailAuthCredential extends AuthCredential ``` Extends: [AuthCredential](./auth.authcredential.md) ## Remarks Covers both [SignInMethod.EMAIL\_PASSWORD](./auth.signinmethod.email_password.md) and [SignInMethod.EMAIL\_LINK](./auth.signinmethod.email_link.md). The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `EmailAuthCredential` class. ## Methods | Method | Modifiers | Description | | --- | --- | --- | | [fromJSON(json)](./auth.emailauthcredential.fromjson.md) | static | Static method to deserialize a JSON representation of an object into an [AuthCredential](./auth.authcredential.md). | | [toJSON()](./auth.emailauthcredential.tojson.md) | | Returns a JSON-serializable representation of this object. |