1 using System; 2 using System.Data; 3 using System.Configuration; 4 using System.Web; 5 using System.Security.Cryptography; 6 using System.Text; 7 using System.IO; 8 using System.Windows.Forms; 9 10 11 /// <summary> 12 /// DesEncrypt 的摘要说明 13 /// </summary> 14 public class DesMd5 15 { 16 public DesMd5() 17 { 18 // 19 // TODO: 在此处添加构造函数逻辑 20 // 21 } 22 23 24 25 26 27 /// <summary> 28 /// Encrypt the string 29 /// Attention:key must be 8 bits 30 /// </summary> 31 /// <param name="strText">string</param> 32 /// <param name="strEncrKey">key</param> 33 /// <returns></returns> 34 public string DesEncrypt(string strText, string strEncrKey) 35 { 36 byte[] byKey = null; 37 byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; 38 try 39 { 40 byKey = System.Text.Encoding.UTF8.GetBytes(strEncrKey.Substring(0, 8)); 41 DESCryptoServiceProvider des = new DESCryptoServiceProvider(); 42 byte[] inputByteArray = Encoding.UTF8.GetBytes(strText); 43 MemoryStream ms = new MemoryStream(); 44 CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write); 45 cs.Write(inputByteArray, 0, inputByteArray.Length); 46 cs.FlushFinalBlock(); 47 return Convert.ToBase64String(ms.ToArray()); 48 49 } 50 catch (System.Exception error) 51 { 52 // MessageBox.Show(error.Message); 53 return "error:" + error.Message + "\r"; 54 } 55 } 56 /// <summary> 57 /// Decrypt string 58 /// Attention:key must be 8 bits 59 /// </summary> 60 /// <param name="strText">Decrypt string</param> 61 /// <param name="sDecrKey">key</param> 62 /// <returns>output string</returns> 63 public string DesDecrypt(string strText, string sDecrKey) 64 { 65 byte[] byKey = null; 66 byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; 67 byte[] inputByteArray = new Byte[strText.Length]; 68 try 69 { 70 byKey = System.Text.Encoding.UTF8.GetBytes(sDecrKey.Substring(0, 8)); 71 DESCryptoServiceProvider des = new DESCryptoServiceProvider(); 72 inputByteArray = Convert.FromBase64String(strText); 73 MemoryStream ms = new MemoryStream(); 74 CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write); 75 cs.Write(inputByteArray, 0, inputByteArray.Length); 76 cs.FlushFinalBlock(); 77 System.Text.Encoding encoding = new System.Text.UTF8Encoding(); 78 return encoding.GetString(ms.ToArray()); 79 } 80 catch (System.Exception error) 81 { 82 // MessageBox.Show(error.Message); 83 return "error:" + error.Message + "\r"; 84 } 85 } 86 /// <summary> 87 /// Encrypt files 88 /// Attention:key must be 8 bits 89 /// </summary> 90 /// <param name="m_InFilePath">Encrypt file path</param> 91 /// <param name="m_OutFilePath">output file</param> 92 /// <param name="strEncrKey">key</param> 93 public void DesEncryptFile(string m_InFilePath, string m_OutFilePath, string strEncrKey) 94 { 95 byte[] byKey = null; 96 byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; 97 try 98 { 99 byKey = System.Text.Encoding.UTF8.GetBytes(strEncrKey.Substring(0, 8)); 100 FileStream fin = new FileStream(m_InFilePath, FileMode.Open, FileAccess.Read); 101 FileStream fout = new FileStream(m_OutFilePath, FileMode.OpenOrCreate, FileAccess.Write); 102 fout.SetLength(0); 103 //Create variables to help with read and write. 104 byte[] bin = new byte[100]; //This is intermediate storage for the encryption. 105 long rdlen = 0; //This is the total number of bytes written. 106 long totlen = fin.Length; //This is the total length of the input file. 107 int len; //This is the number of bytes to be written at a time. 108 DES des = new DESCryptoServiceProvider(); 109 CryptoStream encStream = new CryptoStream(fout, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write); 110 111 //Read from the input file, then encrypt and write to the output file. 112 while (rdlen < totlen) 113 { 114 len = fin.Read(bin, 0, 100); 115 encStream.Write(bin, 0, len); 116 rdlen = rdlen + len; 117 } 118 encStream.Close(); 119 fout.Close(); 120 fin.Close(); 121 122 123 } 124 catch (System.Exception error) 125 { 126 MessageBox.Show(error.Message, "错误信息"); 127 // MessageBox.Show(error.Message.ToString()); 128 } 129 } 130 /// <summary> 131 /// Decrypt files 132 /// Attention:key must be 8 bits 133 /// </summary> 134 /// <param name="m_InFilePath">Decrypt filepath</param> 135 /// <param name="m_OutFilePath">output filepath</param> 136 /// <param name="sDecrKey">key</param> 137 public void DesDecryptFile(string m_InFilePath, string m_OutFilePath, string sDecrKey) 138 { 139 byte[] byKey = null; 140 byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; 141 try 142 { 143 byKey = System.Text.Encoding.UTF8.GetBytes(sDecrKey.Substring(0, 8)); 144 FileStream fin = new FileStream(m_InFilePath, FileMode.Open, FileAccess.Read); 145 FileStream fout = new FileStream(m_OutFilePath, FileMode.OpenOrCreate, FileAccess.Write); 146 fout.SetLength(0); 147 //Create variables to help with read and write. 148 byte[] bin = new byte[100]; //This is intermediate storage for the encryption. 149 long rdlen = 0; //This is the total number of bytes written. 150 long totlen = fin.Length; //This is the total length of the input file. 151 int len; //This is the number of bytes to be written at a time. 152 DES des = new DESCryptoServiceProvider(); 153 CryptoStream encStream = new CryptoStream(fout, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write); 154 155 //Read from the input file, then encrypt and write to the output file. 156 while (rdlen < totlen) 157 { 158 len = fin.Read(bin, 0, 100); 159 encStream.Write(bin, 0, len); 160 rdlen = rdlen + len; 161 } 162 encStream.Close(); 163 fout.Close(); 164 fin.Close(); 165 } 166 catch (System.Exception error) 167 { 168 MessageBox.Show(error.Message, "错误信息"); 169 //MessageBox.Show("error:" + error.Message); 170 } 171 } 172 173 ///MD5加密 174 public string MD5Encrypt(string pToEncrypt, string sKey) 175 { 176 DESCryptoServiceProvider des = new DESCryptoServiceProvider(); 177 byte[] inputByteArray = Encoding.Default.GetBytes(pToEncrypt); 178 des.Key = ASCIIEncoding.ASCII.GetBytes(sKey); 179 des.IV = ASCIIEncoding.ASCII.GetBytes(sKey); 180 MemoryStream ms = new MemoryStream(); 181 CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write); 182 cs.Write(inputByteArray, 0, inputByteArray.Length); 183 cs.FlushFinalBlock(); 184 StringBuilder ret = new StringBuilder(); 185 foreach (byte b in ms.ToArray()) 186 { 187 ret.AppendFormat("{0:X2}", b); 188 } 189 ret.ToString(); 190 return ret.ToString(); 191 192 } 193 ///MD5解密 194 public string MD5Decrypt(string pToDecrypt, string sKey) 195 { 196 DESCryptoServiceProvider des = new DESCryptoServiceProvider(); 197 byte[] inputByteArray = new byte[pToDecrypt.Length / 2]; 198 for (int x = 0; x < pToDecrypt.Length / 2; x++) 199 { 200 int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16)); 201 inputByteArray[x] = (byte)i; 202 } 203 des.Key = ASCIIEncoding.ASCII.GetBytes(sKey); 204 des.IV = ASCIIEncoding.ASCII.GetBytes(sKey); 205 MemoryStream ms = new MemoryStream(); 206 CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write); 207 cs.Write(inputByteArray, 0, inputByteArray.Length); 208 cs.FlushFinalBlock(); 209 StringBuilder ret = new StringBuilder(); 210 return System.Text.Encoding.Default.GetString(ms.ToArray()); 211 } 212 213 //哈希加密 214 public string HashEncrypt(string plain) 215 { 216 byte[] buffer = System.Text.Encoding.UTF8.GetBytes(plain); 217 System.Security.Cryptography.SHA1CryptoServiceProvider sha = 218 new System.Security.Cryptography.SHA1CryptoServiceProvider(); 219 byte[] hash = sha.ComputeHash(buffer); 220 System.Text.StringBuilder passwordBuilder = new System.Text.StringBuilder(32); 221 foreach (byte hashByte in hash) 222 { 223 passwordBuilder.Append(hashByte.ToString("x2")); 224 } 225 return passwordBuilder.ToString(); 226 } 227 228 }
