Find Jobs
Hire Freelancers

License Keys for a C# program

$750-1500 USD

Closed
Posted over 5 years ago

$750-1500 USD

Paid on delivery
I have a c# program and i want to add a License Key system to it. please send example of relevant past work.
Project ID: 17915694

About the project

27 proposals
Remote project
Active 5 yrs ago

Looking to make some money?

Benefits of bidding on Freelancer

Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
27 freelancers are bidding on average $1,051 USD for this job
User Avatar
Dear employer. I am Jin.S, developer . I've just read your job posting and I'm very interested. I'm a certificated freelancer with almost 1000 good reviews from clients. I'm a Good C, C++,c#,Object-C, Video Streaming, OpenCV, Math, java,SQL, Swift, Algorithm expert. I m quite well experienced in these jobs. I want to service for you continuously. Thanks.
$1,250 USD in 20 days
5.0 (437 reviews)
8.8
8.8
User Avatar
hi. I have 5+ years of experience in C# development. I have already built licensing solutions for applications. here's one of my recent projects: ---( https://www.freelancer.com/jobs/project-16962903/ )--- I can show you more of my past work. I'm very interested in working with you. let's discuss further on chat. waiting for your response...
$750 USD in 8 days
5.0 (130 reviews)
7.3
7.3
User Avatar
Hello, As an experienced C# developer, i am very much interested to provide you a solution for your C# project to enable licensing. In fact, i already have a tool. If you want i can show you. Better let's discuss in detail. Thanks
$750 USD in 7 days
5.0 (162 reviews)
7.3
7.3
User Avatar
I am highly motivated developer, experienced in C#/ website and software development. I have strong knowledge in the following technologies : 1 - C#, ASP .NET, JAVA, C 2 - Javascript, jQuery , HTML, CSS 3 - Web Services, WCF, REST, SOAP 4 - Windows Form Application, Windows Console App, WPF ( Desktop Application For Windows) 5 - Windows Phone Application ( 8, 8.1) 6 - Automated Softwares (Ex . Linkedin Bot to Post on Groups, Send Messages etc) 7 - MySQL, SQL Server (08, 12) , Visual studio (10,12, 13, 15)
$1,250 USD in 20 days
5.0 (32 reviews)
5.5
5.5
User Avatar
hello,how are you. i read your bid carefully. i am License Project expert and have full experience for 7 years. C#, C/C++ is my top skill and my interested skill. I can provide most quality and high fast. if you want to success, please contact me. Then, I will give you good result. hire me.
$1,250 USD in 20 days
4.8 (8 reviews)
5.8
5.8
User Avatar
We will add a license key system to your program. We are a central India based software company with team of over 20+ developers having 9+ years of experience in developing Windows Desktop, Web & Android based applications, We have successfully delivered many ERP Applications for manufacturing factories, few MIS & LIMS Applications for Central Government of India, and many Web & Android based application for startup & mid level companies. We have a team of proficient developers with specialty in custom C# development from scratch, Time duration to complete the project may be less or more depending on the exact requirements. Kindly share more details regarding the project, looking forward to work with you. Regards Arun , Senior Project Manager, e-Planet Infosystem India Pvt. Ltd.
$833 USD in 25 days
5.0 (12 reviews)
5.5
5.5
User Avatar
I have experience with "License Keys" - especially cracking it... (but not only). Now I'm creating web-based system that identified browser and control it remotely. The main problem with lincensing program is to get unique identified from system - the best simple unique identifier is serial of your hard drive (main partition). I'm C++ / C# / Java / IOS / Android / PHP software developer - I can create also web admin panel based on wordpress to control licensing process. I'm from EU
$1,150 USD in 20 days
5.0 (2 reviews)
4.5
4.5
User Avatar
Hello my name is Fares, I can get it done perfectly as you want let's chat when you are online, Thanks
$750 USD in 5 days
4.8 (18 reviews)
4.3
4.3
User Avatar
Dear sir. Your project attracted my attention at first glance, because I've extensive experience in C# & License Key Programming. I'm really confident about your project, and very eager to join your project. If we have a chance to cooperate, I'll do my best to provide wonderful result. Looking forward to your response. Best Regards.
$1,000 USD in 20 days
4.9 (6 reviews)
4.3
4.3
User Avatar
Hello sir, I was a private .NET worker for 7 years with Windows and UWP experience, I can modify your program and add a secure licencing module in short notice. Just drop me a message and we can talk.
$750 USD in 5 days
5.0 (4 reviews)
3.3
3.3
User Avatar
I have more than 5 years of experience in C# developement. I have worked on many of the latest technologies and good amount of hands on experience. I have already created demo for you. If you wish i can show you.
$944 USD in 20 days
5.0 (5 reviews)
2.7
2.7
User Avatar
Hello Sir, I have completed M.C.A from Pune University. I have a working Experience of 5+ years in software and web development. I believe that my qualification and skills are best match for your requirements. Following is a list of my attributes which will enable me to contribute to your software projects effectively: • Extensive experience in C#.net, ASP.net,Asp.Net MVC 5, Asp.Net Core. • Long term interest in SQL Server 2016. • Familiar with Angular 4,Web Services and Asp.net Web API. • Basic knowledge of LINQ, Ajax, Javascript, Jquery. • BI Reporting Services SSRS, RDLC and Crystal Report.
$1,500 USD in 30 days
2.8 (2 reviews)
2.7
2.7
User Avatar
Hi, I have implemented license key validation in several C# windows desktop project using mac of system. You can check it on Easy Optimizer project of my portfolio. If you have any questions about my qualifications and skills, please do not hesitate to check out my profile, portfolio and work history which is attached here. If you want to contact me later, I'm always available on Email and Skype. I am willing to work for 60 hours per week to help you with your project. So, I am really looking forward to start the project as soon as possible with your permission.  Regards Arvind K.
$1,250 USD in 7 days
0.0 (0 reviews)
0.0
0.0
User Avatar
I have already created and using a License management program successfully at 7-8 of my projects. It works with RSA & DES keys, similar to SSL communication and uses MS SQL Server to persist data and encrypted license keys. The main functionality are: 01) Create registration for your 'Application' with details like 'app name' & 'version' 02) Create registrations for your 'Clients' with details like 'name', 'email', 'mobile' etc. 03) Generate and assign a license key to a 'Application' and 'Client' combination. 04) Search and view the licenses. 04) Client uses your 'Application' with the license key to register itself with the 'License Server' ONLY ONCE! 05) The 'Application' creates and saves a encrypted 'Regenerated key' with itself containing all relevant data for registration and Client machine information. 06) On running the 'Application' henceforth the 'Regenerated key' is used to verify registration details without the need for visiting the 'License Server'
$1,200 USD in 15 days
0.0 (0 reviews)
0.0
0.0
User Avatar
Hi methods 1 - Online registration control The user enters the key and this key is checked online by you. 2 - Control by application The user enters the key and makes the program key control. Key is produced the way you want. It can be a structure that you specify, such as CPU, Disk, MAC address. I can do whatever you choose. Best regards.
$1,250 USD in 10 days
0.0 (0 reviews)
0.0
0.0
User Avatar
I think i have an idea but i don’t have a relevant project with this system. When a person create an account a serial key will be generate for him with a random system, and when he will pay to activate account send email with serial key to user. When the user use his serial key, serial key will be setted to 0 and this mean the account has been activated. (The serial key is on table with users)
$750 USD in 5 days
0.0 (0 reviews)
0.0
0.0
User Avatar
Hello, I've been studying cyber security for the last 4 years. One of my main skills is Reverse Engineering so I know everything that a good licensing needs. I've worked with obfuscators and licensing systems in the past, all of them done in C# or C++. In order to give a final price, I'll need to know some features that you might want to add. for example: Do we want to server side variables or sensistive information? Can we rely on internet connection? Are the licenses lifetime? Details like that would be perfect in order to determine a final price.. hope you understand. If you'd like to see previous work of mine related to this field, feel free to open chat and i'll glady deliver sample files or snippets of code.
$1,250 USD in 20 days
0.0 (0 reviews)
0.0
0.0
User Avatar
I am interested on your project. I have done this type of work previously in my softwares at www.whoitam.com. You can check those. There are no values of license key system if your anti decompiling protection is not good. But i have not only serial but unbreakable anti decompiling protection. You can check my portfolio. If you interested on me please give me a message.
$1,000 USD in 10 days
0.0 (0 reviews)
0.0
0.0
User Avatar
Experience developing and deploying windows applications based on customer licensing package selection.
$1,500 USD in 45 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of ISRAEL
Tel Aviv, Israel
4.8
5
Payment method verified
Member since Jun 17, 2018

Client Verification

Thanks! We’ve emailed you a link to claim your free credit.
Something went wrong while sending your email. Please try again.
Registered Users Total Jobs Posted
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2024 Freelancer Technology Pty Limited (ACN 142 189 759)
Loading preview
Permission granted for Geolocation.
Your login session has expired and you have been logged out. Please log in again.