Bug: verifyMessage invalid signature length

[jjjachyty]

Describe the bug

i use ios basewallet(29.76.5) Base Model sign text and verifySignature

Steps

const handleSignMessage = async () => {
  console.log('🔵 [signMessage] 开始签署消息...')
  if (!walletClient.value || !account.value) return

  error.value = null
  signature.value = null
  verifyResult.value = null
  isSigning.value = true

  try {
    console.log('🔵 [signMessage] 消息内容:', message.value)
    console.log('🔵 [signMessage] 账户地址:', account.value)
    
    // 使用 viem 的 signMessage，它会自动处理消息格式
    console.log('🔵 [signMessage] 请求钱包签名...')
    const sig = await walletClient.value.signMessage({
      account: account.value,
      message: message.value
    })
    
    console.log('✅ [signMessage] 原始签名:', sig)
    console.log('🔵 [signMessage] 签名类型:', typeof sig)
    console.log('🔵 [signMessage] 签名长度:', sig.length, '字符')
    
     
      signature.value = sig
      console.log('✅ [signMessage] 签名成功，格式正确')
   
  } catch (err: any) {
    console.error('❌ [signMessage] 签名失败:', err)
    console.error('❌ [signMessage] 错误详情:', {
      name: err.name,
      message: err.message,
      code: err.code,
      cause: err.cause
    })
    error.value = err.shortMessage || err.message || '签名失败'
  } finally {
    isSigning.value = false
  }
}

const handleVerifyMessage = async () => {
  console.log('🔵 [verifySignature] 开始验证签名...')
  if (!account.value || !signature.value) return

  error.value = null
  isVerifying.value = true

  try {
    const isValid = await verifyMessage({
      address: account.value,
      message: message.value,
      signature: signature.value as `0x${string}`
    })
    console.log('✅ [verifySignature] 验证结果:', isValid)
    verifyResult.value = isValid
  } catch (err: any) {
    console.error('❌ [verifySignature] 验证失败:', err)
    error.value = err.message || '验证失败'
  } finally {
    isVerifying.value = false
  }
}

my address :0x17046ccf43e0d7f0d44e98be223f4ba25af0f59f
message test：
Hello, viem! 这是一条测试消息。

sign result：
0x0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000041f71592b5fd91490f5c86b56bb2246b59eb099a6efadef8a882297d5f3e3d0b1a42229f5c2cd603695081cc18a90b69cd895dce707ce9d4a61618a27490afc7801c00000000000000000000000000000000000000000000000000000000000000

how can i verify sign result was my address：0x17046ccf43e0d7f0d44e98be223f4ba25af0f59f sign it

Expected behavior

verifyMessage pass

Version

29.76.5

Additional info

No response

Desktop

No response

Smartphone

No response

[jjjachyty]

@spencerstock