ECDsa Class

.NET Framework (current version)

Provides an abstract base class that encapsulates the Elliptic Curve Digital Signature Algorithm (ECDSA).

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

Inheritance Hierarchy

System::Object
System.Security.Cryptography::AsymmetricAlgorithm
System.Security.Cryptography::ECDsa
System.Security.Cryptography::ECDsaCng

Syntax

C++

[HostProtectionAttribute(SecurityAction::LinkDemand, MayLeakOnAbort = true)]
public ref class ECDsa abstract : AsymmetricAlgorithm

Constructors

	Name	Description
	ECDsa()	Initializes a new instance of the ECDsa class.

Properties

	Name	Description
	KeyExchangeAlgorithm	Gets the name of the key exchange algorithm.(Overrides AsymmetricAlgorithm::KeyExchangeAlgorithm.)
	KeySize	Gets or sets the size, in bits, of the key modulus used by the asymmetric algorithm.(Inherited from AsymmetricAlgorithm.)
	LegalKeySizes	Gets the key sizes that are supported by the asymmetric algorithm.(Inherited from AsymmetricAlgorithm.)
	SignatureAlgorithm	Gets the name of the signature algorithm.(Overrides AsymmetricAlgorithm::SignatureAlgorithm.)

Methods

	Name	Description
	Clear()	Releases all resources used by the AsymmetricAlgorithm class.(Inherited from AsymmetricAlgorithm.)
	Create()	Creates a new instance of the default implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA).
	Create(ECCurve)	Creates a new instance of the default implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA) with a newly generated key over the specified curve.
	Create(ECParameters)	Creates a new instance of the default implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA) using the specified parameters as the key.
	Create(String^)	Creates a new instance of the specified implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA).
	Dispose()	Releases all resources used by the current instance of the AsymmetricAlgorithm class.(Inherited from AsymmetricAlgorithm.)
	Dispose(Boolean)	Releases the unmanaged resources used by the AsymmetricAlgorithm class and optionally releases the managed resources.(Inherited from AsymmetricAlgorithm.)
	Equals(Object^)	Determines whether the specified object is equal to the current object.(Inherited from Object.)
	ExportExplicitParameters(Boolean)	When overridden in a derived class, exports the explicit parameters for an elliptic curve.
	ExportParameters(Boolean)	When overridden in a derived class, exports the named or explicit parameters for an elliptic curve. If the curve has a name, the Curve field contains named curve parameters, otherwise it contains explicit parameters.
	Finalize()	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)
	FromXmlString(String^)	When overridden in a derived class, reconstructs an AsymmetricAlgorithm object from an XML string. Otherwise, throws a NotImplementedException.(Inherited from AsymmetricAlgorithm.)
	GenerateKey(ECCurve)	When overridden in a derived class, generates a new public/private key pair for the specified curve.
	GetHashCode()	Serves as the default hash function. (Inherited from Object.)
	GetType()	Gets the Type of the current instance.(Inherited from Object.)
	HashData(array<Byte>^, Int32, Int32, HashAlgorithmName)	When overridden in a derived class, computes the hash value of the specified portion of a byte array by using the specified hashing algorithm.
	HashData(Stream^, HashAlgorithmName)	When overridden in a derived class, computes the hash value of the specified binary stream by using the specified hashing algorithm.
	ImportParameters(ECParameters)	When overridden in a derived class, imports the specified parameters.
	MemberwiseClone()	Creates a shallow copy of the current Object.(Inherited from Object.)
	SignData(array<Byte>^, HashAlgorithmName)	Computes the hash value of the specified byte array using the specified hash algorithm and signs the resulting hash value.
	SignData(array<Byte>^, Int32, Int32, HashAlgorithmName)	Computes the hash value of a portion of the specified byte array using the specified hash algorithm and signs the resulting hash value.
	SignData(Stream^, HashAlgorithmName)	Computes the hash value of the specified stream using the specified hash algorithm and signs the resulting hash value.
	SignHash(array<Byte>^)	Generates a digital signature for the specified hash value.
	ToString()	Returns a string that represents the current object.(Inherited from Object.)
	ToXmlString(Boolean)	When overridden in a derived class, creates and returns an XML string representation of the current AsymmetricAlgorithm object. Otherwise, throws a NotImplementedException.(Inherited from AsymmetricAlgorithm.)
	VerifyData(array<Byte>^, array<Byte>^, HashAlgorithmName)	Verifies that a digital signature is valid by calculating the hash value of the specified data using the specified hash algorithm and comparing it to the provided signature.
	VerifyData(array<Byte>^, Int32, Int32, array<Byte>^, HashAlgorithmName)	Verifies that a digital signature is valid by calculating the hash value of the data in a portion of a byte array using the specified hash algorithm and comparing it to the provided signature.
	VerifyData(Stream^, array<Byte>^, HashAlgorithmName)	Verifies that a digital signature is valid by calculating the hash value of the specified stream using the specified hash algorithm and comparing it to the provided signature.
	VerifyHash(array<Byte>^, array<Byte>^)	Verifies a digital signature against the specified hash value.

Fields

	Name	Description
	KeySizeValue	Represents the size, in bits, of the key modulus used by the asymmetric algorithm.(Inherited from AsymmetricAlgorithm.)
	LegalKeySizesValue	Specifies the key sizes that are supported by the asymmetric algorithm.(Inherited from AsymmetricAlgorithm.)

Remarks

This class serves as the abstract base class for ECDsaCng derivations.

Version Information

.NET Framework
Available since 3.5

Thread Safety

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