C Generate New Machine Key

C Generate New Machine Key
6 Jul 2011CPOL
Machine key generates a unique key which helps you on single form because it helps to protect your Form Authentication cookies and page level View state

Generate random alpha, numeric, or both, CD keys for software distribution and registration. A maximum key length of 48 characters may be generated. May 31, 2019  How do I move the SSH keys to another machine. Answer/Solution: In order to move the SSH keys to another user or machine, copy and move the SSH folder to the new machine. This folder is found in the following path. Adobe pdf professional mac download. Edit the private key line: PrivateKey=C:Usersnew profileAppDataRoamingIpswitchWSFTPSSHClientKeyStoreYour key name.tmp.

Introduction

Machine key generates a unique key which helps you on single form because it helps to protect your Form Authentication cookies and page level View state. When user sends a request and Server A receives response with form Authentication cookies, now again he sends a request which was received by Server B and attempted to decrypt form authentication cookies which was unsuccessful to decrypt because server A was using his own unique machine key and server B was using its own unique machine key to decrypt the form Authentication cookies. To avoid this problem, use the same machine key on all servers.

Generate Machine Key in IIS7

Let’s see the example on how to generate machine key for web site.

  • Open your IIS Manager from Administrative tool -> Internet Information Services Manager.
  • In Connection pane on left side of window, click on the website.
  • Double click on Machine Key icon as shown below.
  • You will see Machine key page, default encryption method is SHA1, you can change it from dropdown list as shown.
  • Click on Generate Keys from Actions pane from left side of IIS window as shown.
  • Click Apply as shown.
  • Message will be shown on Alerts pane, 'The changes have been successfully saved.'
  • Open your Web.Config file, you will find the<machineKey> inside the <system.web> section as shown.

Web.Config

Note: Apply this machine key on all web farm servers; this is my generated machine key.

Link

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Creating and managing keys is an important part of the cryptographic process. Symmetric algorithms require the creation of a key and an initialization vector (IV). The key must be kept secret from anyone who should not decrypt your data. The IV does not have to be secret, but should be changed for each session. Asymmetric algorithms require the creation of a public key and a private key. The public key can be made public to anyone, while the private key must known only by the party who will decrypt the data encrypted with the public key. This section describes how to generate and manage keys for both symmetric and asymmetric algorithms.

Symmetric Keys

The symmetric encryption classes supplied by the .NET Framework require a key and a new initialization vector (IV) to encrypt and decrypt data. Whenever you create a new instance of one of the managed symmetric cryptographic classes using the parameterless constructor, a new key and IV are automatically created. Anyone that you allow to decrypt your data must possess the same key and IV and use the same algorithm. Generally, a new key and IV should be created for every session, and neither the key nor IV should be stored for use in a later session.

To communicate a symmetric key and IV to a remote party, you would usually encrypt the symmetric key by using asymmetric encryption. Sending the key across an insecure network without encrypting it is unsafe, because anyone who intercepts the key and IV can then decrypt your data. For more information about exchanging data by using encryption, see Creating a Cryptographic Scheme.

The following example shows the creation of a new instance of the TripleDESCryptoServiceProvider class that implements the TripleDES algorithm.

When the previous code is executed, a new key and IV are generated and placed in the Key and IV properties, respectively.

Sometimes you might need to generate multiple keys. In this situation, you can create a new instance of a class that implements a symmetric algorithm and then create a new key and IV by calling the GenerateKey and GenerateIV methods. The following code example illustrates how to create new keys and IVs after a new instance of the symmetric cryptographic class has been made.

When the previous code is executed, a key and IV are generated when the new instance of TripleDESCryptoServiceProvider is made. Another key and IV are created when the GenerateKey and GenerateIV methods are called.

Asymmetric Keys

The .NET Framework provides the RSACryptoServiceProvider and DSACryptoServiceProvider classes for asymmetric encryption. These classes create a public/private key pair when you use the parameterless constructor to create a new instance. Asymmetric keys can be either stored for use in multiple sessions or generated for one session only. While the public key can be made generally available, the private key should be closely guarded.

A public/private key pair is generated whenever a new instance of an asymmetric algorithm class is created. After a new instance of the class is created, the key information can be extracted using one of two methods:

  • The ToXmlString method, which returns an XML representation of the key information.

  • The ExportParameters method, which returns an RSAParameters structure that holds the key information.

Both methods accept a Boolean value that indicates whether to return only the public key information or to return both the public-key and the private-key information. An RSACryptoServiceProvider class can be initialized to the value of an RSAParameters structure by using the ImportParameters method.

Asymmetric private keys should never be stored verbatim or in plain text on the local computer. If you need to store a private key, you should use a key container. For more on how to store a private key in a key container, see How to: Store Asymmetric Keys in a Key Container. Sap ides developer access key generator.

C Generate New Machine Key Fob

The following code example creates a new instance of the RSACryptoServiceProvider class, creating a public/private key pair, and saves the public key information to an RSAParameters structure.

C Generate New Machine Key West

See also