`provider.signMessage`

Reserved

Request an identity signature from the Fiber node key. The contract is reserved, but current reference providers do not support it end to end.

Signature

function signMessage(message: string): Promise<{ signature: string; nodeId: string }>

PERMISSION

Would require enable() and an explicit signing confirmation.

Parameters

NameTypeDescription

messagerequiredstring

The exact UTF-8 message the user is asked to sign.

Response

NameTypeDescription

signaturerequiredstring

Provider-defined encoded signature.

nodeIdrequiredstring

Public node identity corresponding to the signing key.

Example

if (!fiber.signMessage) {
  throw new UnsupportedMethodError("Signing is unavailable");
}

const signed = await fiber.signMessage("Sign in to example.app");

Provider behavior

WASM node

fiber-js 0.9.0-rc7 exposes no node message-signing RPC, so the reference provider returns an unsupported error.

Remote fnn

The remote-fnn reference provider does not currently route signMessage to fnn.

Notes

Apps must capability-check optional methods before presenting signing UI.

Errors

UnsupportedMethodError→UserRejectedError→NodeError→