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Creating a custom encrypted file to use it as product keyfront-end ms access database will look and if the file exist and the data is correct then will run. I know how to do the trial and I know that using the custom properties is a way of doing it but I want to see if this is posible and how can it be done. Here is an example of what I want. I want that if the file xxxxx.key is in the same folder as the database and for example the data read like this: iutIU1YIfiFYIfiFyiFuoiulgIYf2uFlifvLYIfyif jfiy3Tifli.gfLIfiyR&4IFVE5e86rF795fyi9f (7t79R6e%iyfUIuR67343wyifIYf90tgu67 *&587r86ydUyr67RE86R9tlg80Y90645 the system can identify the code that is inside iutIU*1*YIfiFYIfiFyiFuoiulgIYf*2*uFlifvLYIfyif jfiy*3*Tifli.gfLIfiyR&*4*IFVE5e86rF79*5*fyi9f (7t79R*6*e%iyfUIuR6*7*343wyifIYf90tgu67 *&587r*8*6ydUyr67RE86R*9*tlg80Y90645 123456789 Can access do this? Hi, I was looking in the net for this problem and found out almost the same
that I want but without any explenation of how it is done. The site is http://www.granite.ab.ca/access/demo.htm Can anyone let me know how to do this? Thanks... Show quoteHide quote "Victor Torres" wrote: > Hi to all, I'm looking for a way of creating an encrypted file that my > front-end ms access database will look and if the file exist and the data is > correct then will run. I know how to do the trial and I know that using the > custom properties is a way of doing it but I want to see if this is posible > and how can it be done. Here is an example of what I want. I want that if > the file xxxxx.key is in the same folder as the database and for example the > data read like this: > > iutIU1YIfiFYIfiFyiFuoiulgIYf2uFlifvLYIfyif > jfiy3Tifli.gfLIfiyR&4IFVE5e86rF795fyi9f > (7t79R6e%iyfUIuR67343wyifIYf90tgu67 > *&587r86ydUyr67RE86R9tlg80Y90645 > > the system can identify the code that is inside > > iutIU*1*YIfiFYIfiFyiFuoiulgIYf*2*uFlifvLYIfyif > jfiy*3*Tifli.gfLIfiyR&*4*IFVE5e86rF79*5*fyi9f > (7t79R*6*e%iyfUIuR6*7*343wyifIYf90tgu67 > *&587r*8*6ydUyr67RE86R*9*tlg80Y90645 > > 123456789 > > Can access do this? Victor Torres <VictorTor***@discussions.microsoft.com> wrote:
>Hi, I was looking in the net for this problem and found out almost the same Yes, that's my page. And no I didn't post any code as I do *not* want>that I want but without any explenation of how it is done. The site is >http://www.granite.ab.ca/access/demo.htm >Can anyone let me know how to do this? Thanks... to be liable for someone else's mistake. The first line in my key file is a line that states in clear text "Granite Consulting License Key File" so that someone looking at this will have an idea of what the file is all about. I would strongly urge using the CryptoAPI as specified by Microsoft. Read the documentation thoroughly. See Security Alert: Debian & Ubuntu Linux Weak Encryption Keys http://www.cmu.edu/computing/news/security/2008/may/051608-1.html DSA-1571-1 openssl -- predictable random number generator http://www.debian.org/security/2008/dsa-1571 My point is that rolling your own solution can cause problems. How to encrypt a string in Visual Basic 6.0 and how to decrypt the string in Visual Basic .NET or in Visual Basic 2005 http://support.microsoft.com/kb/821762 will give you enough keywords to continue searching. Tony -- Tony Toews, Microsoft Access MVP Please respond only in the newsgroups so that others can read the entire thread of messages. Microsoft Access Links, Hints, Tips & Accounting Systems at http://www.granite.ab.ca/accsmstr.htm Tony's Microsoft Access Blog - http://msmvps.com/blogs/access/ Thanks Tony... You're one of the best! I'm just looking for a simple but
jet, powerful security system. Like in your example I know that limiting the number of users or records has to be one of the best methods out there but I'm trying to go beyond that. I already found out how to retrieve the Microsoft Windows Product Key (Not the ProductID) and combine it with a date creating a unique code. My apps will look for the day plus or a qty of opens. So if they manage to trick the date they will have from 100 to 200 opens until the program stop. What I'm looking right now is creating a xxxx.key file that will have the code inside it but when someone open it will only see garbage. Anyway thanks for your help. I will look at those pages to see if I can find out how to accomplish this. By the way, can you or someone else tell me how to do a random with letter and number? I try to look for this in the web with no luck. I think this is by using array but I'm not an expert in vb. Thanks for any help that you can give me. Show quoteHide quote "Tony Toews [MVP]" wrote: > Victor Torres <VictorTor***@discussions.microsoft.com> wrote: > > >Hi, I was looking in the net for this problem and found out almost the same > >that I want but without any explenation of how it is done. The site is > >http://www.granite.ab.ca/access/demo.htm > >Can anyone let me know how to do this? Thanks... > > Yes, that's my page. And no I didn't post any code as I do *not* want > to be liable for someone else's mistake. > > The first line in my key file is a line that states in clear text > "Granite Consulting License Key File" so that someone looking at this > will have an idea of what the file is all about. > > I would strongly urge using the CryptoAPI as specified by Microsoft. > Read the documentation thoroughly. > > See Security Alert: Debian & Ubuntu Linux Weak Encryption Keys > http://www.cmu.edu/computing/news/security/2008/may/051608-1.html > DSA-1571-1 openssl -- predictable random number generator > http://www.debian.org/security/2008/dsa-1571 > > My point is that rolling your own solution can cause problems. > > How to encrypt a string in Visual Basic 6.0 and how to decrypt the > string in Visual Basic .NET or in Visual Basic 2005 > http://support.microsoft.com/kb/821762 will give you enough keywords > to continue searching. > > Tony > -- > Tony Toews, Microsoft Access MVP > Please respond only in the newsgroups so that others can > read the entire thread of messages. > Microsoft Access Links, Hints, Tips & Accounting Systems at > http://www.granite.ab.ca/accsmstr.htm > Tony's Microsoft Access Blog - http://msmvps.com/blogs/access/ > 
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