Decryptionkey

The symmetric encryption classes supplied by. NET 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 Create method, 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. The following example shows the creation of a new instance of the default implementation class for the Aes 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 preceding code is executed, a key and IV are generated when the new instance of Aes is made.

Asymmetric keys can be either stored for use in multiple sessions or generated for one session only. If two distinct applications share a virtual path perhaps because those applications are running on different ports , this flag can be used to further distinguish them from one another. NET 4. CompatibilityMode setting. If you need to support configuration across a network of Web servers a Web farm , set the DecryptionKey property manually to ensure consistent configuration.

NET 2. This property is typically set declaratively in the DecryptionKey attribute of the machineKey element of the Web.

For more information, see the machineKey element. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. In the first section of this tool, you can generate public or private keys. To do so, select the RSA key size among , , and bit click on the button. This will generate the keys for you. For encryption and decryption, enter the plain text and supply the key. As the encryption can be done using both the keys, you need to tell the tool about the key type that you have supplied with the help of radio button.

By default, public key is selected. Then, you can use the cipher type to be used for the encryption. Now, once you click the encrypt button the encrypted result will be shown in the textarea just below the button. Similarly, for decryption the process is same.