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[C#] 简单的 Helper 封装 -- SecurityHelper 安全助手:封装加密算法(MD5、SHA、HMAC、DES、RSA)

作者:互联网

  1 #region
  2 
  3 using System;
  4 using System.IO;
  5 using System.Security.Cryptography;
  6 using System.Text;
  7 
  8 #endregion
  9 
 10 namespace Wen.Helpers.Common
 11 {
 12     /// <summary>
 13     /// 安全助手
 14     /// </summary>
 15     public sealed class SecurityHelper
 16     {
 17         private static readonly byte[] IvBytes = {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF};
 18 
 19         #region 通用加密算法
 20 
 21         /// <summary>
 22         /// 哈希加密算法
 23         /// </summary>
 24         /// <param name="hashAlgorithm"> 所有加密哈希算法实现均必须从中派生的基类 </param>
 25         /// <param name="input"> 待加密的字符串 </param>
 26         /// <param name="encoding"> 字符编码 </param>
 27         /// <returns></returns>
 28         private static string HashEncrypt(HashAlgorithm hashAlgorithm, string input, Encoding encoding)
 29         {
 30             var data = hashAlgorithm.ComputeHash(encoding.GetBytes(input));
 31 
 32             return BitConverter.ToString(data).Replace("-", "");
 33         }
 34 
 35         /// <summary>
 36         /// 验证哈希值
 37         /// </summary>
 38         /// <param name="hashAlgorithm"> 所有加密哈希算法实现均必须从中派生的基类 </param>
 39         /// <param name="unhashedText"> 未加密的字符串 </param>
 40         /// <param name="hashedText"> 经过加密的哈希值 </param>
 41         /// <param name="encoding"> 字符编码 </param>
 42         /// <returns></returns>
 43         private static bool VerifyHashValue(HashAlgorithm hashAlgorithm, string unhashedText, string hashedText,
 44             Encoding encoding)
 45         {
 46             return string.Equals(HashEncrypt(hashAlgorithm, unhashedText, encoding), hashedText,
 47                 StringComparison.OrdinalIgnoreCase);
 48         }
 49 
 50         #endregion 通用加密算法
 51 
 52         #region 哈希加密算法
 53 
 54         #region MD5 算法
 55 
 56         /// <summary>
 57         /// MD5 加密
 58         /// </summary>
 59         /// <param name="input"> 待加密的字符串 </param>
 60         /// <param name="encoding"> 字符编码 </param>
 61         /// <returns></returns>
 62         public static string Md5Encrypt(string input, Encoding encoding)
 63         {
 64             return HashEncrypt(MD5.Create(), input, encoding);
 65         }
 66 
 67         /// <summary>
 68         /// 验证 MD5 值
 69         /// </summary>
 70         /// <param name="input"> 未加密的字符串 </param>
 71         /// <param name="encoding"> 字符编码 </param>
 72         /// <returns></returns>
 73         public static bool VerifyMd5Value(string input, Encoding encoding)
 74         {
 75             return VerifyHashValue(MD5.Create(), input, Md5Encrypt(input, encoding), encoding);
 76         }
 77 
 78         #endregion MD5 算法
 79 
 80         #region SHA1 算法
 81 
 82         /// <summary>
 83         /// SHA1 加密
 84         /// </summary>
 85         /// <param name="input"> 要加密的字符串 </param>
 86         /// <param name="encoding"> 字符编码 </param>
 87         /// <returns></returns>
 88         public static string Sha1Encrypt(string input, Encoding encoding)
 89         {
 90             return HashEncrypt(SHA1.Create(), input, encoding);
 91         }
 92 
 93         /// <summary>
 94         /// 验证 SHA1 值
 95         /// </summary>
 96         /// <param name="input"> 未加密的字符串 </param>
 97         /// <param name="encoding"> 字符编码 </param>
 98         /// <returns></returns>
 99         public static bool VerifySha1Value(string input, Encoding encoding)
100         {
101             return VerifyHashValue(SHA1.Create(), input, Sha1Encrypt(input, encoding), encoding);
102         }
103 
104         #endregion SHA1 算法
105 
106         #region SHA256 算法
107 
108         /// <summary>
109         /// SHA256 加密
110         /// </summary>
111         /// <param name="input"> 要加密的字符串 </param>
112         /// <param name="encoding"> 字符编码 </param>
113         /// <returns></returns>
114         public static string Sha256Encrypt(string input, Encoding encoding)
115         {
116             return HashEncrypt(SHA256.Create(), input, encoding);
117         }
118 
119         /// <summary>
120         /// 验证 SHA256 值
121         /// </summary>
122         /// <param name="input"> 未加密的字符串 </param>
123         /// <param name="encoding"> 字符编码 </param>
124         /// <returns></returns>
125         public static bool VerifySha256Value(string input, Encoding encoding)
126         {
127             return VerifyHashValue(SHA256.Create(), input, Sha256Encrypt(input, encoding), encoding);
128         }
129 
130         #endregion SHA256 算法
131 
132         #region SHA384 算法
133 
134         /// <summary>
135         /// SHA384 加密
136         /// </summary>
137         /// <param name="input"> 要加密的字符串 </param>
138         /// <param name="encoding"> 字符编码 </param>
139         /// <returns></returns>
140         public static string Sha384Encrypt(string input, Encoding encoding)
141         {
142             return HashEncrypt(SHA384.Create(), input, encoding);
143         }
144 
145         /// <summary>
146         /// 验证 SHA384 值
147         /// </summary>
148         /// <param name="input"> 未加密的字符串 </param>
149         /// <param name="encoding"> 字符编码 </param>
150         /// <returns></returns>
151         public static bool VerifySha384Value(string input, Encoding encoding)
152         {
153             return VerifyHashValue(SHA256.Create(), input, Sha384Encrypt(input, encoding), encoding);
154         }
155 
156         #endregion SHA384 算法
157 
158         #region SHA512 算法
159 
160         /// <summary>
161         /// SHA512 加密
162         /// </summary>
163         /// <param name="input"> 要加密的字符串 </param>
164         /// <param name="encoding"> 字符编码 </param>
165         /// <returns></returns>
166         public static string Sha512Encrypt(string input, Encoding encoding)
167         {
168             return HashEncrypt(SHA512.Create(), input, encoding);
169         }
170 
171         /// <summary>
172         /// 验证 SHA512 值
173         /// </summary>
174         /// <param name="input"> 未加密的字符串 </param>
175         /// <param name="encoding"> 字符编码 </param>
176         /// <returns></returns>
177         public static bool VerifySha512Value(string input, Encoding encoding)
178         {
179             return VerifyHashValue(SHA512.Create(), input, Sha512Encrypt(input, encoding), encoding);
180         }
181 
182         #endregion SHA512 算法
183 
184         #region HMAC-MD5 加密
185 
186         /// <summary>
187         /// HMAC-MD5 加密
188         /// </summary>
189         /// <param name="input"> 要加密的字符串 </param>
190         /// <param name="key"> 密钥 </param>
191         /// <param name="encoding"> 字符编码 </param>
192         /// <returns></returns>
193         public static string HmacMd5Encrypt(string input, string key, Encoding encoding)
194         {
195             return HashEncrypt(new HMACMD5(encoding.GetBytes(key)), input, encoding);
196         }
197 
198         #endregion HMAC-MD5 加密
199 
200         #region HMAC-SHA1 加密
201 
202         /// <summary>
203         /// HMAC-SHA1 加密
204         /// </summary>
205         /// <param name="input"> 要加密的字符串 </param>
206         /// <param name="key"> 密钥 </param>
207         /// <param name="encoding"> 字符编码 </param>
208         /// <returns></returns>
209         public static string HmacSha1Encrypt(string input, string key, Encoding encoding)
210         {
211             return HashEncrypt(new HMACSHA1(encoding.GetBytes(key)), input, encoding);
212         }
213 
214         #endregion HMAC-SHA1 加密
215 
216         #region HMAC-SHA256 加密
217 
218         /// <summary>
219         /// HMAC-SHA256 加密
220         /// </summary>
221         /// <param name="input"> 要加密的字符串 </param>
222         /// <param name="key"> 密钥 </param>
223         /// <param name="encoding"> 字符编码 </param>
224         /// <returns></returns>
225         public static string HmacSha256Encrypt(string input, string key, Encoding encoding)
226         {
227             return HashEncrypt(new HMACSHA256(encoding.GetBytes(key)), input, encoding);
228         }
229 
230         #endregion HMAC-SHA256 加密
231 
232         #region HMAC-SHA384 加密
233 
234         /// <summary>
235         /// HMAC-SHA384 加密
236         /// </summary>
237         /// <param name="input"> 要加密的字符串 </param>
238         /// <param name="key"> 密钥 </param>
239         /// <param name="encoding"> 字符编码 </param>
240         /// <returns></returns>
241         public static string HmacSha384Encrypt(string input, string key, Encoding encoding)
242         {
243             return HashEncrypt(new HMACSHA384(encoding.GetBytes(key)), input, encoding);
244         }
245 
246         #endregion HMAC-SHA384 加密
247 
248         #region HMAC-SHA512 加密
249 
250         /// <summary>
251         /// HMAC-SHA512 加密
252         /// </summary>
253         /// <param name="input"> 要加密的字符串 </param>
254         /// <param name="key"> 密钥 </param>
255         /// <param name="encoding"> 字符编码 </param>
256         /// <returns></returns>
257         public static string HmacSha512Encrypt(string input, string key, Encoding encoding)
258         {
259             return HashEncrypt(new HMACSHA512(encoding.GetBytes(key)), input, encoding);
260         }
261 
262         #endregion HMAC-SHA512 加密
263 
264         #endregion 哈希加密算法
265 
266         #region 对称加密算法
267 
268         #region Des 加解密
269 
270         /// <summary>
271         /// DES 加密
272         /// </summary>
273         /// <param name="input"> 待加密的字符串 </param>
274         /// <param name="key"> 密钥(8位) </param>
275         /// <returns></returns>
276         public static string DesEncrypt(string input, string key)
277         {
278             try
279             {
280                 var keyBytes = Encoding.UTF8.GetBytes(key);
281                 //var ivBytes = Encoding.UTF8.GetBytes(iv);
282 
283                 var des = DES.Create();
284                 des.Mode = CipherMode.ECB; //兼容其他语言的 Des 加密算法
285                 des.Padding = PaddingMode.Zeros; //自动补 0
286 
287                 using (var ms = new MemoryStream())
288                 {
289                     var data = Encoding.UTF8.GetBytes(input);
290 
291                     using (var cs = new CryptoStream(ms, des.CreateEncryptor(keyBytes, IvBytes), CryptoStreamMode.Write)
292                     )
293                     {
294                         cs.Write(data, 0, data.Length);
295                         cs.FlushFinalBlock();
296                     }
297 
298                     return Convert.ToBase64String(ms.ToArray());
299                 }
300             }
301             catch
302             {
303                 return input;
304             }
305         }
306 
307         /// <summary>
308         /// DES 解密
309         /// </summary>
310         /// <param name="input"> 待解密的字符串 </param>
311         /// <param name="key"> 密钥(8位) </param>
312         /// <returns></returns>
313         public static string DesDecrypt(string input, string key)
314         {
315             try
316             {
317                 var keyBytes = Encoding.UTF8.GetBytes(key);
318                 //var ivBytes = Encoding.UTF8.GetBytes(iv);
319 
320                 var des = DES.Create();
321                 des.Mode = CipherMode.ECB; //兼容其他语言的Des加密算法
322                 des.Padding = PaddingMode.Zeros; //自动补0
323 
324                 using (var ms = new MemoryStream())
325                 {
326                     var data = Convert.FromBase64String(input);
327 
328                     using (var cs = new CryptoStream(ms, des.CreateDecryptor(keyBytes, IvBytes), CryptoStreamMode.Write)
329                     )
330                     {
331                         cs.Write(data, 0, data.Length);
332 
333                         cs.FlushFinalBlock();
334                     }
335 
336                     return Encoding.UTF8.GetString(ms.ToArray());
337                 }
338             }
339             catch
340             {
341                 return input;
342             }
343         }
344 
345         #endregion Des 加解密
346 
347         #endregion 对称加密算法
348 
349         #region 非对称加密算法
350 
351         /// <summary>
352         /// 生成 RSA 公钥和私钥
353         /// </summary>
354         /// <param name="publicKey"> 公钥 </param>
355         /// <param name="privateKey"> 私钥 </param>
356         public static void GenerateRsaKeys(out string publicKey, out string privateKey)
357         {
358             using (var rsa = new RSACryptoServiceProvider())
359             {
360                 publicKey = rsa.ToXmlString(false);
361                 privateKey = rsa.ToXmlString(true);
362             }
363         }
364 
365         /// <summary>
366         /// RSA 加密
367         /// </summary>
368         /// <param name="publickey"> 公钥 </param>
369         /// <param name="content"> 待加密的内容 </param>
370         /// <returns> 经过加密的字符串 </returns>
371         public static string RsaEncrypt(string publickey, string content)
372         {
373             var rsa = new RSACryptoServiceProvider();
374             rsa.FromXmlString(publickey);
375             var cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false);
376 
377             return Convert.ToBase64String(cipherbytes);
378         }
379 
380         /// <summary>
381         /// RSA 解密
382         /// </summary>
383         /// <param name="privatekey"> 私钥 </param>
384         /// <param name="content"> 待解密的内容 </param>
385         /// <returns> 解密后的字符串 </returns>
386         public static string RsaDecrypt(string privatekey, string content)
387         {
388             var rsa = new RSACryptoServiceProvider();
389             rsa.FromXmlString(privatekey);
390             var cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false);
391 
392             return Encoding.UTF8.GetString(cipherbytes);
393         }
394 
395         #endregion 非对称加密算法
396     }
397 }

 

标签:封装,string,Helper,encoding,Encoding,return,input,加密算法,加密
来源: https://www.cnblogs.com/lgx5/p/16429056.html