What you are looking for is full copy protection. We use Rainbow Technologies http://www.rainbow.com/ License Manager
This is a server that runs on the network and checks how many copies are running. If each of you applications cannot talk to the server then they won't start up. They key is generated by using taking a snap shot of the hardware the server is running on, customers send this back to us during install, and we send them back a full license key. We normally include a 30 day eval license so that non UK customers are not hit with time zone problems trying to contact us In addition we obfusticate all our code to stop reverse engineering Both work well and stop any form of copying ------------------------------------------------------------------------- Keith Sterling Jacobs Rimell VP of Engineering Jacobs Rimell Ltd 24 Chiswell St London EC1Y 4TY Tel : +44 207 786 4000 Mob : +44 7771 597 630 Fax : +44 207 786 4004 http://www.jacobsrimell.com ------------------------------------------------------------------------- IMPORTANT NOTICE: This email is confidential, may be legally privileged, and is for the intended recipient only. If you are not the intended recipient, please inform the sender and delete the email immediately. WARNING: It is impossible to guarantee the content of this message when it is delivered across the internet, therefore the sender accepts no liability for any claims arising from the information contained. -----Original Message----- From: SAMINATHAN [mailto:[EMAIL PROTECTED]] Sent: 29 April 2002 05:59 To: [EMAIL PROTECTED] Subject: Re: prevent cracking my class files We also facing some kind of similar issue but in our case we want to restrict of installation.If client buys for 5 user license we don't want to allow more than 5 people accessing our server. bye Saminathan. ----- Original Message ----- From: "Ramesh" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, April 29, 2002 10:17 AM Subject: Re: prevent cracking my class files > hi > u want just disable re-engineering or to disable unauthorized copying?? > Using obfuscators available in market you can make re-engineering difficult. > To disable unauthorized copying a combination of techniques can be used. One > such technique is to generate a key for each distribution and write a > separate > class loader to load and check this generated key in the main class if it is > tampered exit the program. > thanks > ramesh > > -----Original Message----- > From: A mailing list for Enterprise JavaBeans development > [mailto:[EMAIL PROTECTED]]On Behalf Of Kesav, Ramesh > Sent: Monday, April 29, 2002 9:49 AM > To: [EMAIL PROTECTED] > Subject: prevent cracking my class files > > > > Hi all, > > i have a product being developed for Chartered Accountants. It is a swing > application.Now i want to sell the product to various parties but i do not > want them to crack my class files. > I had 2 ideas > 1) first i will convert these class files into executables but i heard that > javatoexe is not the appropriate one. > 2) secondly i thought of writing this class files into a cd and somehow i > need to put a cd key in it.how to do this. > > any other suggestions are mostly welcome. > > Regards > > Ramesh Kesavanarayanan > [EMAIL PROTECTED] > > =========================================================================== > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > of the message "signoff EJB-INTEREST". For general help, send email to > [EMAIL PROTECTED] and include in the body of the message "help". > > =========================================================================== > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > of the message "signoff EJB-INTEREST". For general help, send email to > [EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff EJB-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff EJB-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
