一、题目要求

程序可以输入日记内容
需要将日记内容进行加密
能够将加密数据写入区块链
能够读取链上加密数据
读取的加密数据进行解密
解密后在程序中显示

二、模板规划

读取模板：

记录模板：

三、源码

using System;using System.Collections.Generic;using BsvSimpleLibrary;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using NBitcoin;using NBitcoin.DataEncoders;using BitcoinSVCryptor;namespace 日记{public partial class Form1 : Form{public Form1(){InitializeComponent(); }private void textBox1_TextChanged(object sender, EventArgs e){}private void button1_Click(object sender, EventArgs e){if(textBox1.Text==""){MessageBox.Show("私钥不能为空");}string privateKeyStr = textBox1.Text;BitcoinSecret privateKey;try{privateKey = new BitcoinSecret(privateKeyStr);string network = "";if (privateKey.Network == Network.TestNet){network = bsvConfiguration_class.testNetwork;}else if (privateKey.Network == Network.Main){network = bsvConfiguration_class.mainNetwork;}else{MessageBox.Show("网络错误！");}PubKey pubKey = privateKey.PubKey;string pubkeyStr = pubKey.ToHex();KeyId pkhash = pubKey.Hash;string pkhashStr = pkhash.ToString();BitcoinAddress address = pkhash.GetAddress(privateKey.Network);string addressStr = address.ToString();string addrStr = privateKey.PubKeyHash.GetAddress(privateKey.Network).ToString();string destAddress = addressStr;string uri = bsvConfiguration_class.RestApiUri;Base58Encoder base58Encoder = new Base58Encoder();byte[] cipherBase58Bytes = base58Encoder.DecodeData(richTextBox3.Text);string plaintextStr = AES_class.AesDecrypt(cipherBase58Bytes, privateKeyStr);richTextBox2.Clear();richTextBox2.AppendText(plaintextStr + '\n');Task<RestApiAddressHistoryTx[]> addrHistoryTask = Task.Run(() =>{RestApiAddressHistoryTx[] addrHistory2 = RestApi_class.getAddressHistory(uri, network, addrStr);return addrHistory2;});addrHistoryTask.Wait();RestApiAddressHistoryTx[] addrHistory = addrHistoryTask.Result;List<string> txHashs = new List<string> { };for (int i = 0; i < addrHistory.Length; i++){txHashs.Add(addrHistory[i].TxHash);}Task<RestApiTransaction[]> transactionsTask = Task.Run(() =>{RestApiTransaction[] transactionsTemp = new RestApiTransaction[txHashs.Count];for (int i = 0; i < txHashs.Count; i++){transactionsTemp[i] = RestApi_class.getTransaction(uri, network, txHashs[i]);}return transactionsTemp;});transactionsTask.Wait();RestApiTransaction[] transactions = transactionsTask.Result; List<string> opReturnDataStrings = new List<string> { };for (int i = 0; i < txHashs.Count; i++){opReturnDataStrings.Add(RestApi_class.getOpReturnData(transactions[i], bsvConfiguration_class.encoding));}Console.WriteLine();foreach (var opReturnDataString in opReturnDataStrings){if (opReturnDataString != null){try{byte[] tempBase58Bytes = base58Encoder.DecodeData(opReturnDataString);richTextBox4.AppendText(opReturnDataString + '\n');string tempDecrypt = AES_class.AesDecrypt(tempBase58Bytes, privateKeyStr);richTextBox1.AppendText(tempDecrypt + '\n');}catch (Exception){richTextBox1.AppendText(opReturnDataString);}}}}catch (Exception){MessageBox.Show("私钥无效！");}}private void button2_Click(object sender, EventArgs e){string wifPrivateKeyStr = textBox1.Text;BitcoinSecret privateKey = new BitcoinSecret(wifPrivateKeyStr);string privateKeyStr = privateKey.ToString();string plaintextStr = richTextBox2.Text;byte[] aesEncryptedTextBytes = AES_class.AesEncrypt(plaintextStr, privateKeyStr);Base58Encoder base58Encoder = new Base58Encoder();string base58TextData = base58Encoder.EncodeData(aesEncryptedTextBytes);string network = string.Empty;if (privateKey.Network == Network.TestNet){network = bsvConfiguration_class.testNetwork;}else if (privateKey.Network == Network.Main){network = bsvConfiguration_class.mainNetwork;}else{MessageBox.Show("网络错误！");}string destAddress = privateKey.PubKeyHash.GetAddress(privateKey.Network).ToString();try{Task<Dictionary<string, string>> sendTask = Task.Run(() =>{Dictionary<string, string> response = bsvTransaction_class.send(privateKeyStr, 0, network, destAddress, null, base58TextData, 0.5, 0);return response;});sendTask.Wait();}catch (Exception){MessageBox.Show("发送失败！");}richTextBox3.Clear();richTextBox3.Text += base58TextData;richTextBox1.AppendText(plaintextStr+'\n');}private void richTextBox1_TextChanged(object sender, EventArgs e){}private void richTextBox4_TextChanged(object sender, EventArgs e){}private void richTextBox4_TextChanged_1(object sender, EventArgs e){}private void label5_Click(object sender, EventArgs e){}}}