verifyEip191()

verifyEip191(message, signature, options?): Promise<EvmVerifyResult>

Verifies an eip155 CAIP-122 message signed with EIP-191 (personal_sign) by an EOA wallet.

Parses the message, requires an eip155 chain, runs validateMessage from @tuwaio/siwx-core (format, expiration, notBefore and an issuedAt in the future; no policy), recovers the signer from the signature and compares it with the message address case-insensitively. Runs locally, without RPC calls. Nonce, domain and policy checks are the caller’s job (see @tuwaio/siwx-server).

Parameters

message

string

The exact CAIP-122 message string that was signed.

signature

`0x${string}`

The hex-encoded signature returned by the wallet.

options?

EvmVerifyOptions = {}

Verification options; only skipExpiration is used.

Returns

Promise<EvmVerifyResult>

{ success: true, data, method: 'eip191' }, or { success: false, error }. Never throws: parse, validation and recovery errors are returned as error.

Example


const result = await verifyEip191(rawMessage, '0xdeadbeef...');
if (result.success) console.log('Authenticated as:', result.data?.address);