Flexlm License Generator
1. My license generator was built with FlexLM 10.1 and client with 11.14.1. I upgraded my client application to FlexLM 18.104.22.168 and it stopped working. It thew LM_BADCODE error which maps to "Bad encryption code". Then I upgraded my license generator application from 22.214.171.124 and everything stated working. So, Is it necessary to upgrade the license generator to use this version of FlexLM?
Flexlm License Generator
2. If I upgrade my license generator, will the file generated with upgraded FlexLM be compatible with old client application of FlexLM? Is there any flag to make it backward compatible? It is a tedious process to re-share the license files to customers.
3. I noticed a significant improvement in time taken to checkout the license when I upgraded both license generator(from 10.1 to 126.96.36.199) and client (from 188.8.131.52 to 184.108.40.206). Have you made and performance improvement while transitioning to this version?
A key generator (keygen) may be a cryptanalytic tool wont to generate product keys, that are distinctive alpha-numeric sequences that tell associate installer program that the user that initiated the install owns a license of the software package.
A key generator tries to get an accurate product key that enables the installation of the software package to end. thanks to this, the keygen is usually related to software package piracy, cracking and hacking, that is usually true.
FlexNet Publisher ( FlexNet FlexLM ) could be a software system license manager from Flexera software system that implements license management and is meant to be employed in company environments to supply floating licenses to multiple finish users of pc software.
Allowing it to solely run on it machine. instead, an organization might get a pool of floating licenses and these licenses is also allotted dynamically to machines, a license being checked-out once a user begins exploitation the software system on any given machine and checked-in when the user finishes using the software.
Multiple license activation choices are out there to suit any budget including: manual (email/phone), distributor, web-site primarily based, and absolutely web automatic with client registration information.
Generating and verifying license keys is a common requirement for a lot commercial softwarethese days. From desktop applications such as those built on frameworks like Electronor Qt, to dual-licensed open source packages and libraries like Sidekiq,to a variety of other on-premise software applications and dependencies.
When it comes to software licensing, the key generation and verification algorithms vendorschoose can make or break a licensing system. After an algorithm has been compromised, a vendorcan no longer trust any previously generated license keys, including those belonging to legitend-users.
Both of these solutions can come at a huge cost, both in terms of end-user trust, support costs,as well as engineering resources. Suffice it to say, it's a bad situation. And ideally, what wewant to do is avoid the situation entirely, by choosing a modern, secure license keyalgorithm from the get-go.
Software cracks usually only work for a single version of a particular application, sincethe application code itself is modified to bypass any license checks (meaning a softwareupdate often requires an updated crack for the new application code.) Distributing acracked version of an application falls on the bad actor.
The other major attack vector is known as a software "keygen", which is much more ominous. Asits name may imply, a keygen is a form of software, often a separate program or webpage, thatgenerates valid license keys, i.e. a key-generator, or "keygen."
Most software vendors have some type of license keygen, which they keep secret. For example, aftera user submits a successful purchase order, part of the order process calls a key generator, whichgenerates a valid, legitimate license key for the new customer.
Depending on your key generation algorithm, a keygen like this may only be able to generate validkey for a single version of an application. But in the worst case, a bad actor can create a keygenthat generates valid license keys that work across all versions of an application, requiringa complete upheaval of the product's licensing system.
Partial Key Verificationis a software license key algorithm that partitions a product key into multiple "subkeys."With each new version of your product, your license key verification algorithm will check a differentsubset of a license's subkeys.
Our PKV keygen should be a tightly kept trade secret, because with it comes the power to craftlicense keys at-will. But we'll soon realize, much to our demise, keeping a PKV keygen secretis actually not possible.
If you notice, getSubkeyFromSeed(seed, 24, 3, 200) is deriving an expected 0th subkey from theseed value. We then compare the expected 0th subkey to our license key's actual 0th subkey. If thesubkeys don't match, the license key is not valid.
Some applications will have a central point in the bytecode where this check happens, but othersharden their system by inlining the license key checks, making the work of a bad actor wanting tocrack the software much, much harder. But licensing is all essentially the same: it's a seriesof conditionals.
When choosing a modern license key algorithm, we have a quite a few solid options. For example, ourAPI supports a variety of cryptographic schemes for license keys, from elliptic-curve signatures,to RSA signatures and even encryption. Today, we'll be covering elliptic-curve and RSA-2048 signatures.
The license keys we generate may differ in length, depending on the cryptographic scheme we use,but the format is going to stay the same: some encoded data, a delimiter ".", and a cryptographicsignature of the data. (This is more or less the same format our API uses for cryptographic keys.)
After generating our keypair, we're going to want to keep those encoded keys in a safeplace. We'll use the private signing key for our keygen, and we'll use the publicverify key to verify authenticity of license keys within our application.
What's great about this license key format is that we can embed any dataset intoit that we need. Right now, we're embedding the customer's email, but we could includeother information as well, such as order ID, key expiration date, entitlements, andmore. (It could even be a JSON object, which is actually the default for our API.)
One downside is that the more data you embed, the larger the license keys will become.But in the real world, this isn't really an issue, since the majority of users willcopy-and-paste their license keys, as opposed to typing them in by hand.
And as expected, like our keypair, our license keys are also much larger. But they'resecure. And remember, most users copy-and-paste, so length doesn't really matter.(You could even wrap license keys in a license.dat file, which makes distributiona breeze. But that's just an implementation detail.)
Once again, it takes less than 10 lines of code to verify license keys withinyour application. Our RSA implementation can be improved by using a more modernnon-deterministic padding scheme, PKCS1-PSS (which our API also supports.)
But remember, a crack != a keygen, so your application's licensing always runsthe risk of being circumvented via code modification. But license keys cannotbe forged when you utilize a licensing system built on modern cryptography.
Generating and verifying the authenticity of cryptographically signed license keyslike we've covered will work great for a lot of licensing needs. The implementationis straight forward, it's secure, and these types of license keys work especiallygreat for offline-first perpetual licenses (or a timed license with an embedded,immutable expiry).
lmadmin or lmgrd FlexLM daemons are supplied either by the licensed FLEXenabled application publisher or by Flexera Software. Its job is to communicate with the application, and receive the license request from it. It then passes the request to the vendor daemon.
FlexNet Publisher (formerly known as FLEXlm) is a software license manager from Flexera Software which implements license management and is intended to be used in corporate environments to provide floating licenses to multiple end users of computer software.
Computer software can be licensed in a variety of ways. A license to use a piece of software may be associated with a specific machine (node-locked), permitting it to only run on that machine (node in a network); alternatively, a company may buy a pool of floating licenses and these licenses may be allocated dynamically to machines, a license being checked-out when a user begins using the software on any given machine and checked-in when the user finishes using the software. In this way, for example, a company might buy a pool of 50 licenses but support a user community of hundreds of occasional users of the software (so long as no more than 50 users ever want to use the software simultaneously).[original research?]
I'm sorry, but I wasn't able to find any solution for my problem concerning the setup of a FlexLM-Server on Linux. I found the Vendor-Daemon (nilm) but am not able to generate the license file for the server via the online activation form. I'm obviously missing the ominous Computer-ID which seems NOT to be the MAC Address as I would have expected for a FlexLM-Server. Now, I found some articles describing how to obtain the Computer-ID via the NI License Manager in Windows....that's a pity cause my license server still is Linux in this case.
When you purchase new seats of Autodesk software, Autodesk may send you a serial number and product key, which you use to generate a license file. You can also find this information in Autodesk Account.
To generate a network license, you must be an administrator. You must also have a subscription with multi-user access for the product requiring the network license. If you have a mix of products and want to generate license file for all products, you can do so one product at a time.