. NET images decrypted to BASE64

2. #region Image Encryption
4. <summary>
6. Encrypt local files
8. </Summary>
10. <param name="InputName"> Path to read files </param>
12. <param name="outname"> File path to output </param>
14. <param name="key"> key </param>
16. <returns></returns>
18. public bool Encrptfile (string inputname, String outname, string key = "r4yqham%")
20. {
22. Through DES encryption
24. DESCryptoServiceProvider des = new DESCryptoServiceProvider ();
26. Open a file through a stream
28. FileStream fs = System.IO.File.OpenRead (inputname);
30. Get file binary characters
32. byte[] Inputbytearray = new Byte[fs.  Length];
34. Read Stream file
36. Fs. Read (Inputbytearray, 0, (int) fs. Length);
38. Close the stream
40. Fs. Close ();
42. Get cryptographic string binary characters
44. byte[] Keybytearray = Encoding.Default.GetBytes (key);
46. Calculates the specified range hash value for a given byte group
48. SHA1 ha = new sha1managed ();
50. byte[] HB = Ha.computehash (keybytearray);
52. An array of cryptographic keys
54. byte[] SKey = new byte[8];
56. Cryptographic variables
58. byte[] SIV = new byte[8];
60. for (int i = 0; I < 8; i++)
62. Skey[i] = Hb[i];
64. for (int i = 8; I < ; i++)
66. SIV[I-8] = Hb[i];
68. Get encryption Key
70. des.  Key = SKey;
72. Set the cryptographic initialization vector
74. des.iv = SIV;
76. MemoryStream ms = new MemoryStream ();
78. CryptoStream cs = New CryptoStream (MS, Des.  CreateEncryptor (), cryptostreammode.write);
80. Cs. Write (Inputbytearray, 0, inputbytearray.length);
82. Cs. FlushFinalBlock ();
84. fs = System.IO.File.OpenWrite (outname);
86. foreach (Byte b in Ms. ToArray ())
88. {
90. Fs. WriteByte (b);
92. }
94. Fs. Close ();
96. Cs. Close ();
98. Ms. Close ();
100. return true;
102. }
108. #endregion
112. #region Image Decryption
114. <summary>
116. Decrypting the picture returns a Base64
118. </Summary>
120. <param name="filename"></param>
122. <param name="key"></param>
124. <returns></returns>
126. public string Readenimage (string filename, string key = "r4yqham%")
128. {
130. Through des decryption
132. DESCryptoServiceProvider des = new DESCryptoServiceProvider ();
136. Read a file through a stream
138. FileStream fs = File.openread (this.  Filepath.text);
140. Get file binary characters
142. byte[] Inputbytearray = new Byte[fs.  Length];
144. Reading stream files
146. Fs. Read (Inputbytearray, 0, (int) fs. Length);
148. Close the stream
150. Fs. Close ();
152. Key array
154. byte[] Keybytearray = Encoding.Default.GetBytes ("r4yqham%");
156. Defining a Hash variable
158. SHA1 ha = new sha1managed ();
160. Calculates the specified range hash value for a given byte group
162. byte[] HB = Ha.computehash (keybytearray);
164. An array of cryptographic keys
166. byte[] SKey = new byte[8];
168. Cryptographic variables
170. byte[] SIV = new byte[8];
172. for (int i = 0; I < 8; i++)
174. Skey[i] = Hb[i];
176. for (int i = 8; I < ; i++)
178. SIV[I-8] = Hb[i];
180. Get encryption Key
182. des.  Key = SKey;
184. Cryptographic variables
186. des.iv = SIV;
188. MemoryStream ms = new MemoryStream ();
190. CryptoStream cs = New CryptoStream (MS, Des.  CreateDecryptor (), cryptostreammode.write);
192. Cs. Write (Inputbytearray, 0, inputbytearray.length);
194. Cs. FlushFinalBlock ();
196. Byte[] by = Ms.  ToArray ();
198. String base64 = convert.tobase64string (by);
200. Fs. Close ();
202. Cs. Close ();
204. Ms. Close ();
206. Return "data:image/png;base64," + base64;
210. }
214. #endregion

Description: The encryption code for the image encryption after storing a copy, if you need to delete the image before the encryption to modify the code itself

The decryption part is returned after decryption is not a picture but a base64 this is what I have encountered in the Web development project required. Hope to help you, thank you for your support!

. NET images decrypted to BASE64