原文地址：http://docode.top/Article/Detail/10003 目錄： 1、.Net(C#)平臺下Des加密解密源代碼 2、.Net(C#)平臺下Aes加密解密源代碼 3、.Net(C#)平臺下Sha1加密解密源代碼 4、.Net(C#)平臺下MD5加密解密源代碼 5、總結 ...
原文地址：http://docode.top/Article/Detail/10003
目錄：
5、總結
一、.Net(C#)平臺下Des加密解密源代碼：
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public class DesEncryptHelper
{
/// <summary>
/// Des預設密鑰向量
/// </summary>
public static string DesIv
{
get
{
return "20160602"; // 此處可自定義，8個字元長度
}
}
/// <summary>
/// Des加解密鑰必須8位
/// </summary>
public static string DesKey
{
get
{
return "20160602"; // 此處可自定義，8個字元長度
}
}
/// <summary>
/// 獲取Des8位密鑰
/// </summary>
/// <param name="key">Des密鑰字元串</param>
/// <param name="encoding">編碼類型</param>
/// <returns>Des8位密鑰</returns>
static byte[] GetDesKey(string key, Encoding encoding)
{
if (string.IsNullOrEmpty(key))
{
throw new ArgumentNullException("key", "Des密鑰不能為空");
}
if (key.Length > 8)
{
key = key.Substring(0, 8);
}
if (key.Length < 8)
{
// 不足8補全
key = key.PadRight(8, '0');
}
return encoding.GetBytes(key);
}
/// <summary>
/// Des加密
/// </summary>
/// <param name="source">源字元串</param>
/// <param name="encoding">編碼類型</param>
/// <returns>加密後的字元串</returns>
public string EncryptDes(string source, Encoding encoding = null)
{
return EncryptDes(source, DesKey, DesIv, encoding);
}
/// <summary>
/// Des加密
/// </summary>
/// <param name="source">源字元串</param>
/// <param name="key">des密鑰，長度必須8位</param>
/// <param name="iv">密鑰向量</param>
/// <param name="encoding">編碼類型</param>
/// <returns>加密後的字元串</returns>
public static string EncryptDes(string source, string key, string iv, Encoding encoding = null)
{
if (encoding == null) encoding = Encoding.UTF8;
byte[] rgbKeys = GetDesKey(key, encoding),
rgbIvs = GetDesKey(iv, encoding),
inputByteArray = encoding.GetBytes(source);
using (DESCryptoServiceProvider desProvider = new DESCryptoServiceProvider())
{
using (MemoryStream memoryStream = new MemoryStream())
{
using (CryptoStream cryptoStream = new CryptoStream(memoryStream,
desProvider.CreateEncryptor(rgbKeys, rgbIvs), CryptoStreamMode.Write))
{
cryptoStream.Write(inputByteArray, 0, inputByteArray.Length);
// 1.第一種
cryptoStream.FlushFinalBlock();
cryptoStream.Close();
memoryStream.Flush();
memoryStream.Close();
desProvider.Clear();
string result = Convert.ToBase64String(memoryStream.ToArray());
return result;
// 2.第二種
//StringBuilder result = new StringBuilder();
//foreach (byte b in memoryStream.ToArray())
//{
// result.AppendFormat("{0:X2}", b);
//}
//cryptoStream.FlushFinalBlock();
//cryptoStream.Close();
//memoryStream.Flush();
//memoryStream.Close();
//desProvider.Clear();
//return result.ToString();
}
}
}
}
/// <summary>
/// Des解密
/// </summary>
/// <param name="source">源字元串</param>
/// <param name="encoding">編碼類型</param>
/// <returns>解密後的字元串</returns>
public static string DecryptDes(string source, Encoding encoding = null)
{
return DecryptDes(source, DesKey, DesIv, encoding);
}
/// <summary>
/// Des解密
/// </summary>
/// <param name="source">源字元串</param>
/// <param name="key">des密鑰，長度必須8位</param>
/// <param name="iv">密鑰向量</param>
/// <param name="encoding">編碼類型</param>
/// <returns>解密後的字元串</returns>
public static string DecryptDes(string source, string key, string iv, Encoding encoding = null)
{
if (encoding == null) encoding = Encoding.UTF8;
byte[] rgbKeys = GetDesKey(key, encoding),
rgbIvs = GetDesKey(iv, encoding),
inputByteArray = Convert.FromBase64String(source);
using (DESCryptoServiceProvider desProvider = new DESCryptoServiceProvider())
{
using (MemoryStream memoryStream = new MemoryStream())
{
using (CryptoStream cryptoStream = new CryptoStream(memoryStream,
desProvider.CreateDecryptor(rgbKeys, rgbIvs), CryptoStreamMode.Write))
{
cryptoStream.Write(inputByteArray, 0, inputByteArray.Length);
cryptoStream.FlushFinalBlock();
cryptoStream.Close();
memoryStream.Flush();
memoryStream.Close();
desProvider.Clear();
byte[] result = memoryStream.ToArray();
return encoding.GetString(result);
}
}
}
}
}
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二、.Net(C#)平臺下Aes加密解密源代碼：
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public class AesEncryptHelper
{
/// <summary>
/// Aes加解密鑰必須32位
/// </summary>
public static string AesKey
{
get
{
return "asekey32w"; // 此處可自定義，32個字元長度
}
}
/// <summary>
/// 獲取Aes32位密鑰
/// </summary>
/// <param name="key">Aes密鑰字元串</param>
/// <param name="encoding">編碼類型</param>
/// <returns>Aes32位密鑰</returns>
static byte[] GetAesKey(string key, Encoding encoding)
{
if (string.IsNullOrEmpty(key))
{
throw new ArgumentNullException("key", "Aes密鑰不能為空");
}
if (key.Length < 32)
{
// 不足32補全
key = key.PadRight(32, '0');
}
if (key.Length > 32)
{
key = key.Substring(0, 32);
}
return encoding.GetBytes(key);
}
/// <summary>
/// Aes加密
/// </summary>
/// <param name="source">源字元串</param>
/// <returns>加密後的字元串</returns>
public static string EncryptAes(string source)
{
return EncryptAes(source, AesKey);
}
/// <summary>
/// Aes加密
/// </summary>
/// <param name="source">源字元串</param>
/// <param name="key">aes密鑰，長度必須32位</param>
/// <param name="model">運算模式</param>
/// <param name="padding">填充模式</param>
/// <param name="encoding">編碼類型</param>
/// <returns>加密後的字元串</returns>
public static string EncryptAes(string source, string key, CipherMode model = CipherMode.ECB,
PaddingMode padding = PaddingMode.PKCS7, Encoding encoding = null)
{
if (encoding == null) encoding = Encoding.UTF8;
using (AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider())
{
aesProvider.Key = GetAesKey(key, encoding);
aesProvider.Mode = model;
aesProvider.Padding = padding;
using (ICryptoTransform cryptoTransform = aesProvider.CreateEncryptor())
{
byte[] inputBuffers = encoding.GetBytes(source),
results = cryptoTransform.TransformFinalBlock(inputBuffers, 0, inputBuffers.Length);
aesProvider.Clear();
return Convert.ToBase64String(results, 0, results.Length);
}
}
}
/// <summary>
/// Aes解密
/// </summary>
/// <param name="source">源字元串</param>
/// <returns>解密後的字元串</returns>
public static string DecryptAes(string source)
{
return DecryptAes(source, AesKey);
}
/// <summary>
&nb
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