签名

了解如何使用 OneKey 的 Cosmos provider 签署交易和消息。

Amino 签名（旧版）

用于旧版 Amino 编码的交易：


const chainId = 'cosmoshub-4'
const signer = 'cosmos1...'
 
const signDoc = {
  chain_id: chainId,
  account_number: '0',
  sequence: '0',
  fee: {
    amount: [{ denom: 'uatom', amount: '5000' }],
    gas: '200000',
  },
  msgs: [{
    type: 'cosmos-sdk/MsgSend',
    value: {
      from_address: signer,
      to_address: 'cosmos1...',
      amount: [{ denom: 'uatom', amount: '1000000' }],
    },
  }],
  memo: '',
}
 
const result = await provider.signAmino(chainId, signer, signDoc)
 
console.log({
  signed: result.signed,       // 已签名的文档
  signature: result.signature, // { pub_key, signature }
})

Direct 签名（Protobuf）

用于现代 Protobuf 编码的交易：


import { makeSignDoc } from '@cosmjs/proto-signing'
 
const chainId = 'cosmoshub-4'
const signer = 'cosmos1...'
 
const signDoc = makeSignDoc(
  bodyBytes,      // 交易体
  authInfoBytes,  // 包含手续费的认证信息
  chainId,
  accountNumber
)
 
const result = await provider.signDirect(chainId, signer, signDoc)
 
console.log({
  signed: result.signed,
  signature: result.signature,
})

签署任意数据

用于签署任意消息（适用于身份验证）：


const chainId = 'cosmoshub-4'
const signer = 'cosmos1...'
const data = '登录 MyApp 时间：2024-01-01T00:00:00Z'
 
const signature = await provider.signArbitrary(chainId, signer, data)
 
// 验证签名
const isValid = await provider.verifyArbitrary(chainId, signer, data, signature)
console.log('签名有效:', isValid)

广播交易


const chainId = 'cosmoshub-4'
const txBytes = new Uint8Array([...]) // 已签名的交易字节
 
// 广播模式: 'block', 'sync', 'async'
const result = await provider.sendTx(chainId, txBytes, 'sync')
 
console.log('交易哈希:', result)

签署以太坊数据

用于支持以太坊签名的链（如 Evmos）：


const result = await provider.signEthereum(
  chainId,
  signer,
  data,       // 要签署的消息
  'message'   // 类型: 'message' | 'transaction'
)
 
console.log('签名:', result)

错误处理


try {
  await provider.enable('cosmoshub-4')
} catch (error) {
  if (error.code === 4001) {
    console.log('用户拒绝了请求')
  } else if (error.message.includes('not supported')) {
    console.log('不支持该链，请尝试 experimentalSuggestChain')
  } else {
    console.error('连接失败:', error)
  }
}