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RSA Class

Represents the base class from which all implementations of the RSA algorithm inherit.

Namespace:  System.Security.Cryptography
Assembly:  mscorlib (in mscorlib.dll)

[ComVisibleAttribute(true)]
public abstract class RSA : AsymmetricAlgorithm

The RSA type exposes the following members.

  NameDescription
Protected methodRSAInitializes a new instance of RSA.
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  NameDescription
Public propertyKeyExchangeAlgorithmWhen overridden in a derived class, gets the name of the key exchange algorithm. (Inherited from AsymmetricAlgorithm.)
Public propertyKeySizeGets or sets the size, in bits, of the key modulus used by the asymmetric algorithm. (Inherited from AsymmetricAlgorithm.)
Public propertyLegalKeySizesGets the key sizes that are supported by the asymmetric algorithm. (Inherited from AsymmetricAlgorithm.)
Public propertySignatureAlgorithmGets the name of the signature algorithm. (Inherited from AsymmetricAlgorithm.)
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  NameDescription
Public methodClearReleases all resources used by the AsymmetricAlgorithm class. (Inherited from AsymmetricAlgorithm.)
Public methodStatic memberCreate()Creates an instance of the default implementation of the RSA algorithm.
Public methodStatic memberCreate(String)Creates an instance of the specified implementation of RSA.
Public methodDecryptValueWhen overridden in a derived class, decrypts the input data using the private key.
Public methodDispose()Releases all resources used by the current instance of the AsymmetricAlgorithm class. (Inherited from AsymmetricAlgorithm.)
Protected methodDispose(Boolean)Releases the unmanaged resources used by the AsymmetricAlgorithm class and optionally releases the managed resources. (Inherited from AsymmetricAlgorithm.)
Public methodEncryptValueWhen overridden in a derived class, encrypts the input data using the public key.
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodExportParametersWhen overridden in a derived class, exports the RSAParameters.
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodFromXmlStringInitializes an RSA object from the key information from an XML string. (Overrides AsymmetricAlgorithm.FromXmlString(String).)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodImportParametersWhen overridden in a derived class, imports the specified RSAParameters.
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Public methodToXmlStringCreates and returns an XML string containing the key of the current RSA object. (Overrides AsymmetricAlgorithm.ToXmlString(Boolean).)
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  NameDescription
Protected fieldKeySizeValueRepresents the size, in bits, of the key modulus used by the asymmetric algorithm. (Inherited from AsymmetricAlgorithm.)
Protected fieldLegalKeySizesValueSpecifies the key sizes that are supported by the asymmetric algorithm. (Inherited from AsymmetricAlgorithm.)
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Extending this class proves that you are implementing an RSA key. This is required for any developer providing a new RSA key implementation.

The only purpose of this class is as a hierarchy member for identification of the RSA algorithm.

The RSACryptoServiceProvider supports key lengths from 384 bits to 16384 bits in increments of 8 bits if you have the Microsoft Enhanced Cryptographic Provider installed. It supports key lengths from 384 bits to 512 bits in increments of 8 bits if you have the Microsoft Base Cryptographic Provider installed.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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