I need to implement data encryption in my app locally, as well as transfer data over the network, after encrypting it.
Can anyone help me by guiding me to good documentation or resources to acheive this? I have looked upon Apple's cryptoClient application but it's too cryptic(contains Bonjour sharing etc. which I don't need).
Use ZipArchive to encrypt the files (check the documentation, there is a way to zip the data with a password) and since you are gonna transfer the data over the network you should make it as small as possible by zipping it.
This is a great tutorial on using ZipArchive:
http://icodeblog.com/2010/04/12/creating-a-document-centric-iphoneipad-application-with-own-file-format-using-ziparchive/
You can have a look at SQLCipher to encrypt sqlite database, which can store your data locally and to transfer over internet you can simply use HTTPS.
Related
How to auto sync the images and video from the app into the Api Web services.
Do we have any tutorials or source codes on this.
Thanks in advance!!!
There can be multiple approaches depending upon what you are trying to achieve and what backend you are using.
If you are using simple API web services, you need to write your own mechanism both on server as well as client side, which will identify records to be synced based on TimeStamp and few other columns in your DB
If you are open to use other Platforms like Parse.com, they provide in built APIs and libraries to take care of syncing logic
As you are trying to sync file(Images and Videos), you can also try DropBox, iCloud, or Google Drive. Here is a link to an article which i found in a quick search which uses CoreData and Dropbox
Let me know if this helps.
I have a rather simple idea for an iPhone app. What I need to accomplish:
Allow login of users (which means I'll have to store usernames, passwords, and other account info).
Allow users to submit strings that other users can view.
Attributes attached to each string that must be tracked (i.e. "votes, views, comments, etc.).
As such, I assume I'll need to start learning about databases and working between a server and client. I've gotten my feet wet in OSX/iOS programming (specifically Objective-C) before. I want to learn how one can accomplish a data-based application and the needs I listed above.
I've done some light research and discovered something called SQLite (free and open-source is always good). Is this the right path to achieve what I want to do? I'm a total "noob" when it comes to this field of server/client/data "stuff".
Your help is greatly appreciated.
SQLLite is more like a local database. Really, the database that you will use is unimportant. It sounds like a project with webservices. Inside your webservices, you might connect to a Microsoft SQL Server or anything you want.
I think you should study how to setup a webservice that can be accessed in your code. Webservices is not an Objective-C topic, it applies to any platform. Your project is more like a web development project.
You can save user's credentials in keychain.
#Kinderchocolate is right about introducing database into your project.
It hears about a app which need transmitting data among clients.It means your need server database and local database.
For server database,I recommend you to use Parse.Parse is a platform which provide a convenient way to use their server database with Objective-c in your app.This tool will save many times and energy(it's not necessary to learn PHP,Apache,Mysql).Parse is not free of course,but it has a free period and enough for you to examine your idea.
Here's Parse!.
For local database,I recommend you to use Core Data,Which is provided by XCode.Core data is so strong to meet your need.You can find a way to use Core Data in many books.
Go try Firebase for database in the cloud. (On the server). In Swift 4 there is complete support for Firebase and SQLite
I'm working on the application that will record the voice. I want those recordings to be stored in the external mysql database. I know that JSON works well with android and PHP that I can use to connect to DB but it works only with textual data. How can I accomplish this task? What do you recommend to use to send the data? I will appreciate for a link of the good tutorial with examples. Thanks.
There are some different examples on the internet that explain how to use HTTP requests and networking on Android to communicate with a web server. Maybe you could start by looking at some of these http://www.vogella.com/articles/AndroidNetworking/article.html http://www.ibm.com/developerworks/opensource/library/os-android-networking/
Also, take a look at some of the articles here that talk about how to write a good networking app http://developer.att.com/developer/forward.jsp?passedItemId=7200042
I am a beginner at both iPhone programming and SQL, yet I have basic knowledge of them.
I am planning to do an application that would plot a graph from data taken from a database of the server of my company. I know how to plot, I know how to extract data from an sql table, but what I don't know is how to access the server.
So do I have to go through some kind of oracle-like application ?
This may seem like a very stupid question because it might not even be possible but any answer will be appreciated.
Thanks !
Go through a web service for example a PHP page that returns JSON (or XML, but JSON is easier to parse).
I can highly recommend this tutorial
Once you have your web service, you can use NSURLRequest/NSURLConnection to download the data and use a JSON framework to parse it. Or, if you're using XML you can use NSXMLParser.
See this apple code for more info on downloading using NSURLConnection.
The best way for this will be, using APIs at server end that handle the client request and perform database interaction, so transfer of data among device and server, take place through XMLs that will be secure as well as fast.
It is definitely possible to contact a server (I can't imagine what would happen without that!). What you are looking for is NSURLConnection. Have a look at the example provided by Apple.
I have no idea how to store username and password details so that the user does not have to login everytime for the iPhone app.
Can anyone lead me in the right direction? I can't seem to find what to do.
Thanks!
You should be using the Keychain API. It will encrypt the data (not hash, as if you have to send it a the server, then the hash wouldn't be any use).
It's a bit of a pain, so take a look at some of sample code and 3rd-party wrappers available on the internet.
You can use Core Data or SQLite or any other storage (XML, JSON), since there are no cookies in iPhone.
Core Data
http://developer.apple.com/iphone/library/documentation/DataManagement/Conceptual/iPhoneCoreData01/Introduction/Introduction.html
SQLite
http://dblog.com.au/iphone-development-tutorials/iphone-sdk-tutorial-reading-data-from-a-sqlite-database/
Also remember to hash the password you should use MD5 at least.