signWithDan

Description

The signWithDan function is used to sign a message using our The Delegated Authorisation Network (DAN).

Parameters

The payload from the getSessionKeyWithDan helper:

export type DanModuleInfo = {
  /** Ephemeral sk */
  hexEphSKWithout0x: string
  /** eoa address */
  eoaAddress: Hex
  /** threshold */
  threshold: number
  /** parties number */
  partiesNumber: number
  /** userOp to be signed */
  userOperation?: Partial<UserOperationStruct>
  /** chainId */
  chainId: number
  /** selected mpc key id */
  mpcKeyId: string
}

Returns

a signature of type Hex

Example

import { signWithDan } from "@biconomy/account";
const objectToSign: DanSignatureObject = {
  userOperation: UserOperationStruct,
  entryPointVersion: "v0.6.0",
  entryPointAddress: "0x5ff137d4b0fdcd49dca30c7cf57e578a026d2789",
  chainId
}
const messageToSign = JSON.stringify(objectToSign)
const signature: Hex = await signWithDan(messageToSign, sessionSignerData.danModuleInfo); // From the getSessionKeyWithDan helper