信息计算2019级1班5号唐乐

唐乐 · 发表于 2022-4-5 18:38:05

2022年4月5日 mooc截图

唐乐 · 发表于 2022-4-5 18:40:45

本帖最后由唐乐于 2022-4-5 18:43 编辑

using System;
using System.Text;
using System.Security.Cryptography;
using Microsoft.Office.Interop.Word;
namespace ConsoleAES
{
class Program
{
/// <summary>
/// AES 算法加密(ECB模式) 将明文加密，加密后进行base64编码，返回密文
/// </summary>
/// <param name="EncryptStr">明文</param>
/// <param name="Key">密钥</param>
/// <returns>加密后base64编码的密文</returns>
public static string AesEncryptor_Base64(string EncryptStr, string Key)
{
try
{
//byte[] keyArray = Encoding.UTF8.GetBytes(Key);
byte[] keyArray = Convert.FromBase64String(Key);
byte[] toEncryptArray = Encoding.UTF8.GetBytes(EncryptStr);
RijndaelManaged rDel = new RijndaelManaged();
rDel.Key = keyArray;
rDel.Mode = CipherMode.ECB;
rDel.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = rDel.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}
catch (Exception ex)
{
return null;
}
}
/// <summary>
/// AES 算法解密(ECB模式) 将密文base64解码进行解密，返回明文
/// </summary>
/// <param name="DecryptStr">密文</param>
/// <param name="Key">密钥</param>
/// <returns>明文</returns>
public static string AesDecryptor_Base64(string DecryptStr, string Key)
{
try
{
//byte[] keyArray = Encoding.UTF8.GetBytes(Key);
byte[] keyArray = Convert.FromBase64String(Key);
byte[] toEncryptArray = Convert.FromBase64String(DecryptStr);
RijndaelManaged rDel = new RijndaelManaged();
rDel.Key = keyArray;
rDel.Mode = CipherMode.ECB;
rDel.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = rDel.CreateDecryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return Encoding.UTF8.GetString(resultArray);// UTF8Encoding.UTF8.GetString(resultArray);
}
catch (Exception ex)
{
return null;
}
}
/// <summary>
///AES 算法加密(ECB模式) 将明文加密，加密后进行Hex编码，返回密文
/// </summary>
/// <param name="str">明文</param>
/// <param name="key">密钥</param>
/// <returns>加密后Hex编码的密文</returns>
public static string AesEncryptor_Hex(string str, string key)
{
if (string.IsNullOrEmpty(str)) return null;
Byte[] toEncryptArray = Encoding.UTF8.GetBytes(str);
System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged
{
Key = StrToHexByte(key),
Mode = System.Security.Cryptography.CipherMode.ECB,
Padding = System.Security.Cryptography.PaddingMode.PKCS7
};
System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateEncryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return ToHexString(resultArray);
}
/// <summary>
///AES 算法解密(ECB模式) 将密文Hex解码后进行解密，返回明文
/// </summary>
/// <param name="str">密文</param>
/// <param name="key">密钥</param>
/// <returns>明文</returns>
public static string AesDecryptor_Hex(string str, string key)
{
if (string.IsNullOrEmpty(str)) return null;
Byte[] toEncryptArray = StrToHexByte(str);
System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged
{
Key = StrToHexByte(key),
Mode = System.Security.Cryptography.CipherMode.ECB,
Padding = System.Security.Cryptography.PaddingMode.PKCS7
};
System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateDecryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return Encoding.UTF8.GetString(resultArray);
}
/// <summary>
/// byte数组Hex编码
/// </summary>
/// <param name="bytes">需要进行编码的byte[]</param>
/// <returns></returns>
public static string ToHexString(byte[] bytes) // 0xae00cf => "AE00CF "
{
string hexString = string.Empty;
if (bytes != null)
{
StringBuilder strB = new StringBuilder();
for (int i = 0; i < bytes.Length; i++)
{
strB.Append(bytes[i].ToString("X2"));
}
hexString = strB.ToString();
}
return hexString;
}
/// <summary>
/// 字符串进行Hex解码(Hex.decodeHex())
/// </summary>
/// <param name="hexString">需要进行解码的字符串</param>
/// <returns></returns>
public static byte[] StrToHexByte(string hexString)
{
hexString = hexString.Replace(" ", "");
if ((hexString.Length % 2) != 0)
hexString += " ";
byte[] returnBytes = new byte[hexString.Length / 2];
for (int i = 0; i < returnBytes.Length; i++)
returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
return returnBytes;
}
static void Main(string[] args)
{
Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();//打开word程序
Document doc = null;//实例化一个新的word文档
object unknow = Type.Missing;
app.Visible = true;
object paramSourceDocPath = @"C:\Users\strawberry\Desktop\学习学习\大三下\密码学\MyWord.docx";
doc = app.Documents.Open(ref paramSourceDocPath,
ref unknow, ref unknow, ref unknow, ref unknow, ref unknow,
ref unknow, ref unknow, ref unknow, ref unknow, ref unknow,
ref unknow, ref unknow, ref unknow, ref unknow, ref unknow);
string str = doc.Content.Text.Trim();
//keyStr密钥，str明文，str1、str3密文，str2、str4明文
string keyStr = "3CA10B2157F01916902E1380ACC107BD";
string str1 = AesEncryptor_Base64(str, keyStr);
Console.WriteLine("加密后base64编码的密文：" + str1);
string str2 = AesDecryptor_Base64(str1, keyStr);
Console.WriteLine("解密上述密文：" + str2);
string str3 = AesEncryptor_Hex(str, keyStr);
Console.WriteLine("\n加密后Hex编码的密文：" + str3);
string str4 = AesDecryptor_Hex(str3, keyStr);
Console.WriteLine("解密上述密文：" + str4+"\n");
}
}
}

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信息计算2019级1班5号唐乐

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