RandomNumberGenerator Class

Represents the abstract class from which all implementations of cryptographic random number generators derive.

System.Object
  System.Security.Cryptography.RandomNumberGenerator
    System.Security.Cryptography.RNGCryptoServiceProvider

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

[ComVisibleAttribute(true)]
public abstract class RandomNumberGenerator : IDisposable

The RandomNumberGenerator type exposes the following members.

  NameDescription
Protected methodRandomNumberGeneratorInitializes a new instance of RandomNumberGenerator.
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  NameDescription
Public methodStatic memberCreate()When overridden in a derived class, creates an instance of the default implementation of a cryptographic random number generator that can be used to generate random data.
Public methodStatic memberCreate(String)When overridden in a derived class, creates an instance of the specified implementation of a cryptographic random number generator.
Public methodDispose()When overridden in a derived class, releases all resources used by the current instance of the RandomNumberGenerator class.
Protected methodDispose(Boolean)When overridden in a derived class, releases the unmanaged resources used by the RandomNumberGenerator and optionally releases the managed resources.
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
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 methodGetBytesWhen overridden in a derived class, fills an array of bytes with a cryptographically strong random sequence of values.
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetNonZeroBytesWhen overridden in a derived class, fills an array of bytes with a cryptographically strong random sequence of nonzero values.
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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Cryptographic random number generators create cryptographically strong random values.

Application code does not directly use this class. This abstract class is provided as the base class for all cryptographic random number generators.

For an implementation of a cryptographic random number generator, use the derived class RNGCryptoServiceProvider.

.NET Framework

Supported in: 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 Silverlight 8.1, Windows Phone Silverlight 8

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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