1 #region 跨平台加解密(c# 安卓 IOS) 2 3 // public static string sKey = "12345678"; 4 5 // /// 6 7 // /// 解密 8 9 // /// 10 11 // /// 要解密的以Base64 12 13 // /// 密钥,且必须为8位 14 15 // /// 已解密的字符串 16 17 // public static string DesDecrypt(string pToDecrypt) 18 19 // { 20 21 // //转义特殊字符 22 23 // pToDecrypt = pToDecrypt.Replace("-", "+"); 24 25 // pToDecrypt = pToDecrypt.Replace("_", "/"); 26 27 // pToDecrypt = pToDecrypt.Replace("~", "="); 28 29 // byte[] inputByteArray = Convert.FromBase64String(pToDecrypt); 30 31 // using (DESCryptoServiceProvider des = new DESCryptoServiceProvider()) 32 33 // { 34 35 // des.Key = ASCIIEncoding.ASCII.GetBytes(sKey); 36 37 // des.IV = ASCIIEncoding.ASCII.GetBytes(sKey); 38 39 // System.IO.MemoryStream ms = new System.IO.MemoryStream(); 40 41 // using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write)) 42 43 // { 44 45 // cs.Write(inputByteArray, 0, inputByteArray.Length); 46 47 // cs.FlushFinalBlock(); 48 49 // cs.Close(); 50 51 // } 52 53 // string str = Encoding.UTF8.GetString(ms.ToArray()); 54 55 // ms.Close(); 56 57 // return str; 58 59 // } 60 61 // } 62 63 64 65 // /// 66 67 // /// 对字符串进行DES加密 68 69 // /// 70 71 // /// 待加密的字符串 72 73 // /// 加密后的BASE64编码的字符串 74 75 // public string Encrypt(string sourceString) 76 77 //{ 78 79 // byte[] btKey = Encoding.UTF8.GetBytes(sKey); 80 81 // byte[] btIV = Encoding.UTF8.GetBytes(sKey); 82 83 // DESCryptoServiceProvider des = new DESCryptoServiceProvider(); 84 85 // using (MemoryStream ms = new MemoryStream()) 86 87 // { 88 89 // byte[] inData = Encoding.UTF8.GetBytes(sourceString); 90 91 // try 92 93 // { 94 95 // using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(btKey, btIV), CryptoStreamMode.Write)) 96 97 // { 98 99 // cs.Write(inData, 0, inData.Length); 100 101 // cs.FlushFinalBlock(); 102 103 // } 104 105 106 107 // return Convert.ToBase64String(ms.ToArray()); 108 109 // } 110 111 // catch 112 113 // { 114 115 // throw; 116 117 // } 118 119 // } 120 121 //} 122 123 124 125 #endregion 126 127 128 129 130 131 132 133 134 135 安卓--------------------------------------------------------------------------- 136 137 // // 加密 138 139 //public static String DecryptDoNet(String message, String key) 140 141 // throws Exception { 142 143 // byte[] bytesrc = Base64.decode(message.getBytes(), Base64.DEFAULT); 144 145 // Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding"); 146 147 // DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8")); 148 149 // SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); 150 151 // SecretKey secretKey = keyFactory.generateSecret(desKeySpec); 152 153 // IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8")); 154 155 // cipher.init(Cipher.DECRYPT_MODE, secretKey, iv); 156 157 // byte[] retByte = cipher.doFinal(bytesrc); 158 159 // return new String(retByte); 160 161 //} 162 163 164 165 //// 解密 166 167 //public static String EncryptAsDoNet(String message, String key) 168 169 // throws Exception { 170 171 // Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding"); 172 173 // DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8")); 174 175 // SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); 176 177 // SecretKey secretKey = keyFactory.generateSecret(desKeySpec); 178 179 // IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8")); 180 181 // cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv); 182 183 // byte[] encryptbyte = cipher.doFinal(message.getBytes()); 184 185 // return new String(Base64.encode(encryptbyte, Base64.DEFAULT)); 186 187 //} 188 189 190 191 192 193 194 195 Ios --------------------------------------------------------------------------------------------------------------------196 197 static const char* encryptWithKeyAndType(const char *text,CCOperation encryptOperation,char *key) 198 { 199 NSString *textString=[[NSString alloc]initWithCString:text encoding:NSUTF8StringEncoding]; 200 // NSLog(@"[[item.url description] UTF8String=%@",textString); 201 const void *dataIn; 202 size_t dataInLength; 203 204 if (encryptOperation == kCCDecrypt)//传递过来的是decrypt 解码 205 { 206 //解码 base64 207 NSData *decryptData = [GTMBase64 decodeData:[textString dataUsingEncoding:NSUTF8StringEncoding]];//转成utf-8并decode 208 dataInLength = [decryptData length]; 209 dataIn = [decryptData bytes]; 210 } 211 else //encrypt 212 { 213 NSData* encryptData = [textString dataUsingEncoding:NSUTF8StringEncoding]; 214 dataInLength = [encryptData length]; 215 dataIn = (const void *)[encryptData bytes]; 216 } 217 218 219 CCCryptorStatus ccStatus; 220 uint8_t *dataOut = NULL; //可以理解位type/typedef 的缩写(有效的维护了代码,比如:一个人用int,一个人用long。最好用typedef来定义) 221 size_t dataOutAvailable = 0; //size_t 是操作符sizeof返回的结果类型 222 size_t dataOutMoved = 0; 223 224 dataOutAvailable = (dataInLength + kCCBlockSizeDES) & ~(kCCBlockSizeDES - 1); 225 dataOut = malloc( dataOutAvailable * sizeof(uint8_t)); 226 memset((void *)dataOut, 00, dataOutAvailable);//将已开辟内存空间buffer的首 1 个字节的值设为值 0 227 228 //NSString *initIv = @"12345678"; 229 const void *vkey = key; 230 const void *iv = (const void *) key; //[initIv UTF8String]; 231 232 //CCCrypt函数 加密/解密 233 ccStatus = CCCrypt(encryptOperation,// 加密/解密 234 kCCAlgorithmDES,// 加密根据哪个标准(des,3des,aes。。。。) 235 kCCOptionPKCS7Padding,// 选项分组密码算法(des:对每块分组加一次密 3DES:对每块分组加三个不同的密) 236 vkey, //密钥 加密和解密的密钥必须一致 237 kCCKeySizeDES,// DES 密钥的大小(kCCKeySizeDES=8) 238 iv, // 可选的初始矢量 239 dataIn, // 数据的存储单元 240 dataInLength,// 数据的大小 241 (void *)dataOut,// 用于返回数据 242 dataOutAvailable, 243 &dataOutMoved); 244 245 NSString *result = nil; 246 247 if (encryptOperation == kCCDecrypt)//encryptOperation==1 解码 248 { 249 //得到解密出来的data数据,改变为utf-8的字符串 250 result = [[NSString alloc] initWithData:[NSData dataWithBytes:(const void *)dataOut length:(NSUInteger)dataOutMoved] encoding:NSUTF8StringEncoding]; 251 } 252 else //encryptOperation==0 (加密过程中,把加好密的数据转成base64的) 253 { 254 //编码 base64 255 NSData *data = [NSData dataWithBytes:(const void *)dataOut length:(NSUInteger)dataOutMoved]; 256 result = [GTMBase64 stringByEncodingData:data]; 257 } 258 259 return [result UTF8String]; 260 261 } 262 +(NSString*)encryptWithContent:(NSString*)content type:(CCOperation)type key:(NSString*)aKey 263 { 264 const char * contentChar =[content UTF8String]; 265 char * keyChar =(char*)[aKey UTF8String]; 266 const char *miChar; 267 miChar = encryptWithKeyAndType(contentChar, type, keyChar); 268 return [NSString stringWithCString:miChar encoding:NSUTF8StringEncoding]; 269 } 270 271
时间: 2024-11-06 03:55:35