eSDK_BYOD V100R003C50SPC100 代码样例 01(iOS).zip

3 steps to do file encrypt/decrypt: 1、初始化SDK环境 2、初始化加解密环境 3、调用文件加解密接口 示例： - (IBAction)encryptFile:(id)sender { NSString *srcFilePath = [NSString stringWithFormat:@"%@/%@", self.basePathLabel.text ,[self.originPathTextView text]]; NSString *dstFilePath = [NSString stringWithFormat:@"%@/%@", self.basePathLabel.text ,[self.encryptPathTextView text]]; BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:srcFilePath]; if([self.originPathTextView text].length == 0 || !fileExists) { [self showAlert:@"Please select a file to encrypt!"]; return; } if([self.encryptPathTextView text].length == 0) { [self showAlert:@"Please select a encrypted file to decrypt!"]; return; } SVN_FILE_S *file = svn_fopen([dstFilePath UTF8String], "w"); if (NULL == file) { NSLog(@"open file:%@ error!", dstFilePath); [self showAlert:@"Open encrypt file failed!"]; return; } NSData *data = [NSData dataWithContentsOfFile:srcFilePath]; int iRet = 0; const int buf_size = 1024; char buffer[1024]; memset(buffer, 0, buf_size); int srcRemain = [data length]; int srcLocation = 0; while (srcRemain > 0) { int len = srcRemain > buf_size ? buf_size:srcRemain; NSRange bufRange = NSMakeRange(srcLocation, len); srcLocation += len; srcRemain -= len; [data getBytes:buffer range:bufRange]; iRet = svn_fwrite((unsigned char *)buffer, 1, len, file); if ( 0 > iRet ) { NSLog(@"write file error! iRet=%d", iRet); [self showAlert:@"Write encrypt file error!"]; break; } } iRet = svn_fclose(file); if ( 0 > iRet ) { NSLog(@"close file error! iRet=%d", iRet); [self showAlert:@"Close encrypted file error!"]; return; } }