# signMessage · FT4 TypeScript client · Chromia Docs (concept)

> signMessage(message: string, signer: Signer): Promise< Signature > Signs the provided message using the provided signer and produces a Signature object. Pa

Source: https://docs.chromia.com/pages/ft4-ts-client/functions/authentication.signMessage/

Function

# signMessage

* ```signature
  signMessage(message: string, signer: Signer): Promise<Signature>
  ```

  Signs the provided message using the provided signer and produces a Signature object.

  #### Parameters

  + message: string

    the message to sign
  + signer: Signer

    the signer that will sign the message

  #### Returns Promise<[Signature](https://docs.chromia.com/pages/ft4-ts-client/types/authentication.Signature/)>

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-ts-client/functions/authentication.signMessage.html)Generated API reference, mirrored from the live docs