createSignInSigningMessage

Creates a signing message from a human readable SIWA message. This signing message is used to be signed by the wallet when the user signs in.


import { createSignInMessage, createSignInSigningMessage, type AptosSignInInput } from "@aptos-labs/siwa";
 
const input: AptosSignInInput = {
  domain: "example.com",
  address: "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
  version: "1",
  chainId: "aptos:mainnet",
  nonce: "abc123def456"
};
 
const message = createSignInMessage(input);
 
const signingMessage = createSignInSigningMessage(message); // `Uint8Array` that includes the domain separator hash + message

Specifications

Parameters:

Name	Type	Default
`message`	`string` The SIWA message to sign.

Returns:

Uint8Array<ArrayBufferLike>

The signing message.