Adding machineKey to web.config on web-farm sites. Ask Question. If you are using IIS 7.5 or later you can generate the machine key from IIS and save it directly to your web.config, within the web farm you then just copy the new web.config to each server. Double-click the Machine Key icon in ASP.NET settings in the middle pane. Generate ASP.NET Machine Key. This tool allows to generate a secure machine key for ASP.NET web application. This is beneficial in a web farm scenario when several nodes are expected to produce and consume the identical outputs, view states, sessions and other data. This tool allows you to create a valid random machine key for validation and encryption/decryption of ASP.NET view state. This is beneficial in a webfarm where all of the server nodes need to have the same machine key, and it is also beneficial on a single box to keep the machine key consistent between IIS recycles and server reboots.
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The implementation of the
<machineKey> element in ASP.NET is replaceable. This allows most calls to ASP.NET cryptographic routines to be routed through a replacement data protection mechanism, including the new data protection system.
Package installation
Note
The new data protection system can only be installed into an existing ASP.NET application targeting .NET 4.5.1 or later. Installation will fail if the application targets .NET 4.5 or lower.
To install the new data protection system into an existing ASP.NET 4.5.1+ project, install the package Microsoft.AspNetCore.DataProtection.SystemWeb. This will instantiate the data protection system using the default configuration settings.
When you install the package, it inserts a line into Web.config that tells ASP.NET to use it for most cryptographic operations, including forms authentication, view state, and calls to MachineKey.Protect. The line that's inserted reads as follows.
Tip
You can tell if the new data protection system is active by inspecting fields like
__VIEWSTATE , which should begin with 'CfDJ8' as in the example below. 'CfDJ8' is the base64 representation of the magic '09 F0 C9 F0' header that identifies a payload protected by the data protection system.
Package configuration
The data protection system is instantiated with a default zero-setup configuration. However, since by default keys are persisted to the local file system, this won't work for applications which are deployed in a farm. To resolve this, you can provide configuration by creating a type which subclasses DataProtectionStartup and overrides its ConfigureServices method.
Below is an example of a custom data protection startup type which configured both where keys are persisted and how they're encrypted at rest. It also overrides the default app isolation policy by providing its own application name.
Tip
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You can also use
<machineKey applicationName='my-app' .. /> in place of an explicit call to SetApplicationName. This is a convenience mechanism to avoid forcing the developer to create a DataProtectionStartup-derived type if all they wanted to configure was setting the application name.
To enable this custom configuration, go back to Web.config and look for the
<appSettings> element that the package install added to the config file. It will look like the following markup:
Fill in the blank value with the assembly-qualified name of the DataProtectionStartup-derived type you just created. If the name of the application is DataProtectionDemo, this would look like the below.
The newly-configured data protection system is now ready for use inside the application.
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by Won Yoo
Compatibility
Problem
Windows Server 2012 includes .NET Framework 4.5 by default, as well as optional installation of the .NET 3.5 Framework. Developers and administrators frequently need to run both ASP.net 3.5 and ASP.net 4.5 web applications and therefore they also need the ability to manage them both appropriately.
Solution
IIS 8.0 supports managing both ASP.NET 3.5 and ASP.NET 4.5 applications using both the graphical IIS Manager tool as well as IIS' command-line management tools.
What is the maximum key size for AES 128, Will using a key greater than maximum gives extra security or error? Is there a minimum key size? Suppose a key is 128 bit, does it means The key is of length 16characters. Suggest me a good password to key function. I assume key is a password the user entered. Do not use that for encryption directly. Brute-Force attacks against (possibly very weak) user passwords are far easier than against a full 128 (or 192, 256) bit key. Generate a new secret key. To generate the key, follow the same process as the one for generating a new private key. You use the Security library in each case. Import encrypted keys more securely. Android 9 (API level 28) and higher allow you to import encrypted keys securely into the Keystore using an ASN.1‑encoded key format. This exception basically occur due to length of key that you hava passed for encryption.If you are using AES encryption then the number of characters must be in length of 128/192/256 bits. For example you can use the key of 16 character,24 character or 32 character. Android generate aes key length 128 2. Jan 06, 2018 AES is a block cipher, that means encryption happens on fixed-length groups of bits. In our case the algorithm defines 128 bit blocks. AES supports key lengths of 128, 192 and 256 bit. Every block goes through many cycles of transformation rounds.
Both graphical and command line IIS management tools operate in a version-specific manner when reading or writing configuration information for ASP.NET applications. For example, ASP.NET administration modules running in the IIS Server Manager will display configuration options applicable for the specific ASP.NET version used by an application.
Step by Step InstructionsPrerequisites:
The concepts demonstrated in this walkthrough require a Windows Server 2012 machine with all of the following installed: IIS 8.0, ASP.NET 3.5, and ASP.NET 4.5.
Prior to this walkthrough, readers should have already completed the companion walkthrough: Using ASP.NET 3.5 and ASP.NET 4.5 on IIS 8.0. That document walks readers through installing all three features, as well as sample applications for both versions of ASP.NET.
Workarounds for known bugs:
There are no known bugs for this feature at this time.
Displaying ASP.NET Administration Modules
Start the IIS Manager UI and expand the treeview on the left-hand side of the window so that the 'Default Web Site' and its children are both showing:
The right-hand portion of the IIS Manager UI shows the administrative modules available for managing the ASP.NET application highlighted in the treeview. In this case since Default Web Site is selected, and by default this website supports ASP.NET 4.5, the IIS Manager displays 15 different ASP.NET-specific administration modules. The icons shown above in red outlining are the three administration modules that are only available for use with ASP.NET 4.5 applications.
You can see the high-level differences between managing ASP.NET 3.5 and ASP.NET 4.5 application in the IIS Manager below. Since the 'example35' application is configured for ASP.NET 3.5, only 12 ASP.NET-specific administration modules are available:
As noted above, the IIS Manager in IIS 8.0 supports three additional administration modules when managing ASP.NET 4.5:
Managing ASP.NET Compilation Settings
Many of the administration modules that exist for both ASP.NET 3.5 and ASP.NET 4.5 expose the same functionality. However as some ASP.NET features evolve over time additional configuration options are added in newer .NET Framework versions. The ASP.NET administration modules in the IIS Manager support this by dynamically changing the options they display depending on the version of the ASP.NET application being managed.
Below is a screenshot of .NET Compilation for ASP.NET 3.5:
And below is the corresponding configuration for ASP.NET 4.5. You will see the configuration options have expanded to include new ASP.NET 4.5 capabilities:
The two new options available in ASP.NET 4.5 applications are:
Managing ASP.NET Machine Key Settings
Below is a screenshot of Machine Key for ASP.NET 3.5. The 'Validation method' or 'Encryption method' dropdowns display the supported hashing and encryption algorithms used by various security features in ASP.NET 3.5: (Note: in the picture below the dropdowns are arranged horizontally so both sets of options can be shown.)
And below is the corresponding configuration for ASP.NET 4.5.
Asp Net 4.0 Windows 10
In ASP.NET 4.5 the same set of encryption algorithms are available (AES was available as far back as .NET 2.0). However, in ASP.NET 4.5, the built-in support for hashing algorithms has been expanded to include the SHA-2 family of keyed hash algorithms (HMACSHA256, HMACSHA384, and HMACSHA512).
Managing ASP.NET Pages and Controls
Below is a screenshot of Pages and Controls for ASP.NET 3.5. The administration module will display a subset of commonly used configuration options for ASP.NET 3.5 applications:
Generate Machine Key Asp Net 4.0 Login
And below is the corresponding configuration for ASP.NET 4.5. The options available in the 'Behavior' portion have expanded to include new settings for ASP.NET 4.5:
As ASP.NET progresses through different versions, there are continual modifications to the HTML, Javascript and CSS emitted by various features and controls. However existing applications may expect specific formats for rendered output. ASP.NET 4.5 can be configured to support older rendering formats using the new settings exposed in the 'Pages and Controls' administration module:
Generate Machinekey Asp.net 4.0
SummaryAsp Net 4 5 Download
IIS 8.0 supports running both ASP.NET 3.5 and ASP.NET 4.5 applications on the same machine using different application pools to host each .NET Framework version. To support administering both types of ASP.NET applications, IIS 8.0's management tools (both UI and command-line) also support managing multiple ASP.NET versions. Furthermore the IIS 8.0 Server Manager UI dynamically displays appropriate management options depending on which version of ASP.NET application is being managed. Windows 7 ultimate serial key cd key generator free download windows 7.
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