BSC链签名验签充提币接口——node.js后端使用私钥进行签名的代码实现

signPriKeyButton.addEventListener('click', () => {
            const wdaddress = document.querySelector('#wdaddress').value;
            const wdamount = document.querySelector('#wdamount').value;
            const wdnonce = document.querySelector('#wdnonce').value;
            axios.post('/signMessage', { wdaddress, wdamount, wdnonce })
                .then((res) => {
                const signature = res.data.signature;
                const messageHash = res.data.messageHash;
                
                contractAddressElement.innerText = contractAddress;
                contractAddressElement.style.textAlign = 'left'; // 添加左对齐样式
                contractNameElement.innerText = "Vault";
                contractNameElement.style.textAlign = 'left'; // 添加左对齐样式
                interfaceNameElement.innerText = "queryMessageHash(uint256, address, uint256)";
                interfaceNameElement.style.textAlign = 'left'; // 添加左对齐样式

                signatureElement.value = `${signature}`;
                hashedmgsElement.value = `${messageHash}`;
                signaturerElement.value = `${r}`;
                signaturesElement.value = `${s}`;
                signaturevElement.value = `${v}`;
                })
                .catch((err) => {
                    console.error(err);
                });
        });

2、后端node.js处理前端ajax请求的代码实现：

app.post('/signMessage', (req, res) => {
  const address = req.body.wdaddress;
  const amount = req.body.wdamount;
  const nonce = req.body.wdnonce;

  try {
    //产生签名消息逻辑代码实现
    console.log(signature);
    // 将签名结果发送回客户端
    res.json();
  } catch (error) {
    console.error(error);
    res.status(500).send('Internal Server Error：signMessage failure');
  }

});

至此，完成node.js后端使用私钥进行签名的代码实现所有操作流程。

BSC链签名验签充提币接口教程及node.js后端+solidity链端合约源代码下载:

BSC链签名验签充提币接口教程及node.js后端+solidity链端合约源代码下载地址：

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