信息计算2019级2班31号吴明霞

吴明霞 · 发表于 2022-4-5 16:17:42

第四次网课截图：

吴明霞 · 发表于 2022-4-5 21:29:59

using System;
using System.Text;
using System.Security.Cryptography;
using Microsoft.Office.Interop.Word;
namespace AES
{
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\15658\Desktop\密码解密.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);
string str = doc.Content.Text.Trim();
string str1 = AesEncryptor_Base64(str, "12345678876543211234567887654abc");
Console.WriteLine("password文档中加密后密文（Aes_Base64）：" + str1);
string str2 = AesDecryptor_Base64(str1, "12345678876543211234567887654abc");
Console.WriteLine("解密上述密文：" + str2);
Console.WriteLine("\n" );
string str3 = AesEncryptor_Hex(str, "12345678876543211234567887654abc");
Console.WriteLine("password文档中加密后密文（Aes_Hex）：" + str3);
string str4 = AesDecryptor_Hex(str3, "12345678876543211234567887654abc");
Console.WriteLine("解密上述密文：" + str4);
}
}
}

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信息计算2019级2班31号吴明霞

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