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ECDsa Class

Definition

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

public ref class ECDsa abstract : System::Security::Cryptography::AsymmetricAlgorithm
public ref class ECDsa abstract : System::Security::Cryptography::ECAlgorithm
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public abstract class ECDsa : System.Security.Cryptography.AsymmetricAlgorithm
public abstract class ECDsa : System.Security.Cryptography.ECAlgorithm
public abstract class ECDsa : System.Security.Cryptography.AsymmetricAlgorithm
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
type ECDsa = class
    inherit AsymmetricAlgorithm
type ECDsa = class
    inherit ECAlgorithm
type ECDsa = class
    inherit AsymmetricAlgorithm
Public MustInherit Class ECDsa
Inherits AsymmetricAlgorithm
Public MustInherit Class ECDsa
Inherits ECAlgorithm
Inheritance
Inheritance
Derived
Attributes

Remarks

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

Constructors

ECDsa()

Initializes a new instance of the ECDsa class.

Fields

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)

Properties

KeyExchangeAlgorithm

Gets the name of the key exchange algorithm.

KeyExchangeAlgorithm

When overridden in a derived class, gets the name of the key exchange algorithm. Otherwise, throws an NotImplementedException.

(Inherited from AsymmetricAlgorithm)
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.

SignatureAlgorithm

When implemented in a derived class, gets the name of the signature algorithm. Otherwise, always throws a NotImplementedException.

(Inherited from AsymmetricAlgorithm)

Methods

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)
Obsolete.

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)
ExportECPrivateKey()

Exports the current key in the ECPrivateKey format.

ExportECPrivateKey()

Exports the current key in the ECPrivateKey format.

(Inherited from ECAlgorithm)
ExportECPrivateKeyPem()

Exports the current key in the ECPrivateKey format, PEM encoded.

(Inherited from ECAlgorithm)
ExportEncryptedPkcs8PrivateKey(ReadOnlySpan<Byte>, PbeParameters)

Exports the current key in the PKCS#8 EncryptedPrivateKeyInfo format with a byte-based password.

(Inherited from AsymmetricAlgorithm)
ExportEncryptedPkcs8PrivateKey(ReadOnlySpan<Char>, PbeParameters)

Exports the current key in the PKCS#8 EncryptedPrivateKeyInfo format with a char-based password.

(Inherited from AsymmetricAlgorithm)
ExportEncryptedPkcs8PrivateKeyPem(ReadOnlySpan<Byte>, PbeParameters)

Exports the current key in the PKCS#8 EncryptedPrivateKeyInfo format with a byte-based password, PEM encoded.

(Inherited from AsymmetricAlgorithm)
ExportEncryptedPkcs8PrivateKeyPem(ReadOnlySpan<Char>, PbeParameters)

Exports the current key in the PKCS#8 EncryptedPrivateKeyInfo format with a char-based password, PEM encoded.

(Inherited from AsymmetricAlgorithm)
ExportExplicitParameters(Boolean)

When overridden in a derived class, exports the explicit parameters for an elliptic curve.

ExportExplicitParameters(Boolean)

When overridden in a derived class, exports the explicit ECParameters for an ECCurve.

(Inherited from ECAlgorithm)
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.

ExportParameters(Boolean)

When overridden in a derived class, exports the named or explicit ECParameters for an ECCurve. If the curve has a name, the Curve property will contain named curve parameters otherwise it will contain explicit parameters.

(Inherited from ECAlgorithm)
ExportPkcs8PrivateKey()

Exports the current key in the PKCS#8 PrivateKeyInfo format.

(Inherited from AsymmetricAlgorithm)
ExportPkcs8PrivateKeyPem()

Exports the current key in the PKCS#8 PrivateKeyInfo format, PEM encoded.

(Inherited from AsymmetricAlgorithm)
ExportSubjectPublicKeyInfo()

Exports the public-key portion of the current key in the X.509 SubjectPublicKeyInfo format.

(Inherited from AsymmetricAlgorithm)
ExportSubjectPublicKeyInfoPem()

Exports the public-key portion of the current key in the X.509 SubjectPublicKeyInfo format, PEM encoded.

(Inherited from AsymmetricAlgorithm)
FromXmlString(String)

This method throws in all cases.

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 ephemeral public/private key pair for the specified curve, replacing the current key.

GenerateKey(ECCurve)

When overridden in a derived class, generates a new public/private keypair for the specified curve.

(Inherited from ECAlgorithm)
GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetMaxSignatureSize(DSASignatureFormat)

Gets the largest size, in bytes, for a signature produced by this key in the indicated format.

GetType()

Gets the Type of the current instance.

(Inherited from Object)
HashData(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.

ImportECPrivateKey(ReadOnlySpan<Byte>, Int32)

Imports the public/private keypair from an ECPrivateKey structure, replacing the keys for this object.

ImportECPrivateKey(ReadOnlySpan<Byte>, Int32)

Imports the public/private keypair from an ECPrivateKey structure, replacing the keys for this object.

(Inherited from ECAlgorithm)
ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Int32)

Imports the public/private keypair from a PKCS#8 EncryptedPrivateKeyInfo structure after decrypting with a byte-based password, replacing the keys for this object.

ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Int32)

When overridden in a derived class, imports the public/private keypair from a PKCS#8 EncryptedPrivateKeyInfo structure after decrypting with a byte-based password, replacing the keys for this object.

(Inherited from AsymmetricAlgorithm)
ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Int32)

Imports the public/private keypair from a PKCS#8 EncryptedPrivateKeyInfo structure after decrypting with a byte-based password, replacing the keys for this object.

(Inherited from ECAlgorithm)
ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<Char>, ReadOnlySpan<Byte>, Int32)

Imports the public/private keypair from a PKCS#8 EncryptedPrivateKeyInfo structure after decrypting with a char-based password, replacing the keys for this object.

ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<Char>, ReadOnlySpan<Byte>, Int32)

When overridden in a derived class, imports the public/private keypair from a PKCS#8 EncryptedPrivateKeyInfo structure after decrypting with a char-based password, replacing the keys for this object.

(Inherited from AsymmetricAlgorithm)
ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<Char>, ReadOnlySpan<Byte>, Int32)

Imports the public/private keypair from a PKCS#8 EncryptedPrivateKeyInfo structure after decrypting with a byte-based password, replacing the keys for this object.

(Inherited from ECAlgorithm)
ImportFromEncryptedPem(ReadOnlySpan<Char>, ReadOnlySpan<Byte>)

Imports an encrypted RFC 7468 PEM-encoded private key, replacing the keys for this object.

ImportFromEncryptedPem(ReadOnlySpan<Char>, ReadOnlySpan<Byte>)

When overridden in a derived class, imports an encrypted RFC 7468 PEM-encoded key, replacing the keys for this object.

(Inherited from AsymmetricAlgorithm)
ImportFromEncryptedPem(ReadOnlySpan<Char>, ReadOnlySpan<Byte>)

Imports an encrypted RFC 7468 PEM-encoded private key, replacing the keys for this object.

(Inherited from ECAlgorithm)
ImportFromEncryptedPem(ReadOnlySpan<Char>, ReadOnlySpan<Char>)

Imports an encrypted RFC 7468 PEM-encoded private key, replacing the keys for this object.

ImportFromEncryptedPem(ReadOnlySpan<Char>, ReadOnlySpan<Char>)

When overridden in a derived class, imports an encrypted RFC 7468 PEM-encoded key, replacing the keys for this object.

(Inherited from AsymmetricAlgorithm)
ImportFromEncryptedPem(ReadOnlySpan<Char>, ReadOnlySpan<Char>)

Imports an encrypted RFC 7468 PEM-encoded private key, replacing the keys for this object.

(Inherited from ECAlgorithm)
ImportFromPem(ReadOnlySpan<Char>)

Imports an RFC 7468 PEM-encoded key, replacing the keys for this object.

ImportFromPem(ReadOnlySpan<Char>)

When overridden in a derived class, imports an RFC 7468 textually encoded key, replacing the keys for this object.

(Inherited from AsymmetricAlgorithm)
ImportFromPem(ReadOnlySpan<Char>)

Imports an RFC 7468 PEM-encoded key, replacing the keys for this object.

(Inherited from ECAlgorithm)
ImportParameters(ECParameters)

When overridden in a derived class, imports the specified parameters.

ImportParameters(ECParameters)

When overridden in a derived class, imports the specified ECParameters.

(Inherited from ECAlgorithm)
ImportPkcs8PrivateKey(ReadOnlySpan<Byte>, Int32)

Imports the public/private keypair from a PKCS#8 PrivateKeyInfo structure after decryption, replacing the keys for this object.

ImportPkcs8PrivateKey(ReadOnlySpan<Byte>, Int32)

When overriden in a derived class, imports the public/private keypair from a PKCS#8 PrivateKeyInfo structure after decryption, replacing the keys for this object.

(Inherited from AsymmetricAlgorithm)
ImportPkcs8PrivateKey(ReadOnlySpan<Byte>, Int32)

Imports the public/private keypair from a PKCS#8 PrivateKeyInfo structure after decryption, replacing the keys for this object.

(Inherited from ECAlgorithm)
ImportSubjectPublicKeyInfo(ReadOnlySpan<Byte>, Int32)

Imports the public key from an X.509 SubjectPublicKeyInfo structure after decryption, replacing the keys for this object.

ImportSubjectPublicKeyInfo(ReadOnlySpan<Byte>, Int32)

When overriden in a derived class, imports the public key from an X.509 SubjectPublicKeyInfo structure after decryption, replacing the keys for this object.

(Inherited from AsymmetricAlgorithm)
ImportSubjectPublicKeyInfo(ReadOnlySpan<Byte>, Int32)

Imports the public key from an X.509 SubjectPublicKeyInfo structure after decryption, replacing the keys for this object

(Inherited from ECAlgorithm)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
SignData(Byte[], HashAlgorithmName, DSASignatureFormat)

Computes the hash value of the specified data and signs it using the specified signature format.

SignData(Byte[], HashAlgorithmName)

Computes the hash value of the specified byte array using the specified hash algorithm and signs the resulting hash value.

SignData(Byte[], Int32, Int32, HashAlgorithmName, DSASignatureFormat)

Computes the hash value of the specified data and signs it using the specified signature format.

SignData(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(ReadOnlySpan<Byte>, HashAlgorithmName, DSASignatureFormat)

Computes the hash value of the specified data and signs it using the specified signature format.

SignData(ReadOnlySpan<Byte>, HashAlgorithmName)

Computes the hash value of the specified data and signs it.

SignData(ReadOnlySpan<Byte>, Span<Byte>, HashAlgorithmName, DSASignatureFormat)

Computes the hash value of the specified data and signs it in the indicated format into the provided buffer.

SignData(ReadOnlySpan<Byte>, Span<Byte>, HashAlgorithmName)

Computes the hash value of the specified data and signs it in the indicated format into the provided buffer.

SignData(Stream, HashAlgorithmName, DSASignatureFormat)

Computes the hash value of the specified data and signs it using the specified signature format.

SignData(Stream, HashAlgorithmName)

Computes the hash value of the specified stream using the specified hash algorithm and signs the resulting hash value.

SignDataCore(ReadOnlySpan<Byte>, HashAlgorithmName, DSASignatureFormat)

Computes the hash value of the specified data and signs it using the specified signature format.

SignDataCore(Stream, HashAlgorithmName, DSASignatureFormat)

Computes the hash value of the specified data and signs it using the specified signature format.

SignHash(Byte[], DSASignatureFormat)

Computes the ECDSA signature for the specified hash value in the indicated format.

SignHash(Byte[])

Generates a digital signature for the specified hash value.

SignHash(ReadOnlySpan<Byte>, DSASignatureFormat)

Computes the ECDSA signature for the specified hash value in the indicated format.

SignHash(ReadOnlySpan<Byte>, Span<Byte>, DSASignatureFormat)

Computes the ECDSA signature for the specified hash value in the indicated format into the provided buffer.

SignHash(ReadOnlySpan<Byte>, Span<Byte>)

Computes the ECDSA signature for the specified hash value into the provided buffer.

SignHash(ReadOnlySpan<Byte>)

Computes the ECDSA signature for the specified hash value.

SignHashCore(ReadOnlySpan<Byte>, DSASignatureFormat)

Computes the ECDSA signature for the specified hash value in the indicated format.

ToString()

Returns a string that represents the current object.

(Inherited from Object)
ToXmlString(Boolean)

This method throws in all cases.

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)
TryExportECPrivateKey(Span<Byte>, Int32)

Attempts to export the current key in the ECPrivateKey format into a provided buffer.

TryExportECPrivateKey(Span<Byte>, Int32)

Attempts to export the current key in the ECPrivateKey format into a provided buffer.

(Inherited from ECAlgorithm)
TryExportECPrivateKeyPem(Span<Char>, Int32)

Attempts to export the current key in the PEM-encoded ECPrivateKey format into a provided buffer.

(Inherited from ECAlgorithm)
TryExportEncryptedPkcs8PrivateKey(ReadOnlySpan<Byte>, PbeParameters, Span<Byte>, Int32)

Attempts to export the current key in the PKCS#8 EncryptedPrivateKeyInfo format into a provided buffer, using a byte-based password.

TryExportEncryptedPkcs8PrivateKey(ReadOnlySpan<Byte>, PbeParameters, Span<Byte>, Int32)

When overridden in a derived class, attempts to export the current key in the PKCS#8 EncryptedPrivateKeyInfo format into a provided buffer, using a byte-based password.

(Inherited from AsymmetricAlgorithm)
TryExportEncryptedPkcs8PrivateKey(ReadOnlySpan<Byte>, PbeParameters, Span<Byte>, Int32)

Attempts to export the current key in the PKCS#8 EncryptedPrivateKeyInfo format into a provided buffer, using a byte-based password.

(Inherited from ECAlgorithm)
TryExportEncryptedPkcs8PrivateKey(ReadOnlySpan<Char>, PbeParameters, Span<Byte>, Int32)

Attempts to export the current key in the PKCS#8 EncryptedPrivateKeyInfo format into a provided buffer, using a char-based password.

TryExportEncryptedPkcs8PrivateKey(ReadOnlySpan<Char>, PbeParameters, Span<Byte>, Int32)

When overriden in a derived class, attempts to export the current key in the PKCS#8 EncryptedPrivateKeyInfo format into a provided buffer, using a char-based password.

(Inherited from AsymmetricAlgorithm)
TryExportEncryptedPkcs8PrivateKey(ReadOnlySpan<Char>, PbeParameters, Span<Byte>, Int32)

Attempts to export the current key in the PKCS#8 EncryptedPrivateKeyInfo format into a provided buffer, using a char-based password.

(Inherited from ECAlgorithm)
TryExportEncryptedPkcs8PrivateKeyPem(ReadOnlySpan<Byte>, PbeParameters, Span<Char>, Int32)

Attempts to export the current key in the PKCS#8 EncryptedPrivateKeyInfo format with a byte-based password, PEM encoded.

(Inherited from AsymmetricAlgorithm)
TryExportEncryptedPkcs8PrivateKeyPem(ReadOnlySpan<Char>, PbeParameters, Span<Char>, Int32)

Exports the current key in the PKCS#8 EncryptedPrivateKeyInfo format with a char-based password, PEM encoded.

(Inherited from AsymmetricAlgorithm)
TryExportPkcs8PrivateKey(Span<Byte>, Int32)

Attempts to export the current key in the PKCS#8 PrivateKeyInfo format into a provided buffer.

TryExportPkcs8PrivateKey(Span<Byte>, Int32)

When overridden in a derived class, attempts to export the current key in the PKCS#8 PrivateKeyInfo format into a provided buffer.

(Inherited from AsymmetricAlgorithm)
TryExportPkcs8PrivateKey(Span<Byte>, Int32)

Attempts to export the current key in the PKCS#8 PrivateKeyInfo format into a provided buffer.

(Inherited from ECAlgorithm)
TryExportPkcs8PrivateKeyPem(Span<Char>, Int32)

Attempts to export the current key in the PEM-encoded PKCS#8 PrivateKeyInfo format into a provided buffer.

(Inherited from AsymmetricAlgorithm)
TryExportSubjectPublicKeyInfo(Span<Byte>, Int32)

Attempts to export the current key in the X.509 SubjectPublicKeyInfo format into a provided buffer.

TryExportSubjectPublicKeyInfo(Span<Byte>, Int32)

When overridden in a derived class, attempts to export the current key in the X.509 SubjectPublicKeyInfo format into a provided buffer.

(Inherited from AsymmetricAlgorithm)
TryExportSubjectPublicKeyInfo(Span<Byte>, Int32)

Attempts to export the current key in the X.509 SubjectPublicKeyInfo format into a provided buffer.

(Inherited from ECAlgorithm)
TryExportSubjectPublicKeyInfoPem(Span<Char>, Int32)

Attempts to export the current key in the PEM-encoded X.509 SubjectPublicKeyInfo format into a provided buffer.

(Inherited from AsymmetricAlgorithm)
TryHashData(ReadOnlySpan<Byte>, Span<Byte>, HashAlgorithmName, Int32)

Attempts to compute the hash value of the specified read-only span of bytes into the provided destination by using the specified hashing algorithm.

TrySignData(ReadOnlySpan<Byte>, Span<Byte>, HashAlgorithmName, DSASignatureFormat, Int32)

Attempts to create the ECDSA signature for the specified data in the indicated format into the provided buffer.

TrySignData(ReadOnlySpan<Byte>, Span<Byte>, HashAlgorithmName, Int32)

Attempts to compute the ECDSA digital signature for the specified read-only span of bytes into the provided destination by using the specified hashing algorithm and the current key.

TrySignDataCore(ReadOnlySpan<Byte>, Span<Byte>, HashAlgorithmName, DSASignatureFormat, Int32)

Attempts to create the ECDSA signature for the specified data in the indicated format into the provided buffer.

TrySignHash(ReadOnlySpan<Byte>, Span<Byte>, DSASignatureFormat, Int32)

Attempts to create the ECDSA signature for the specified hash value in the indicated format into the provided buffer.

TrySignHash(ReadOnlySpan<Byte>, Span<Byte>, Int32)

Attempts to compute the ECDSA digital signature for the specified read-only span of bytes representing a data hash into the provided destination by using the current key.

TrySignHashCore(ReadOnlySpan<Byte>, Span<Byte>, DSASignatureFormat, Int32)

Attempts to create the ECDSA signature for the specified hash value in the indicated format into the provided buffer.

VerifyData(Byte[], Byte[], HashAlgorithmName, DSASignatureFormat)

Verifies that a digital signature is valid for the provided data.

VerifyData(Byte[], Byte[], HashAlgorithmName)

Verifies that a digital signature is appropriate for the current key and provided data with a specified hash algorithm.

VerifyData(Byte[], Int32, Int32, Byte[], HashAlgorithmName, DSASignatureFormat)

Verifies that a digital signature is valid for the provided data.

VerifyData(Byte[], Int32, Int32, Byte[], HashAlgorithmName)

Verifies that a digital signature is appropriate for the current key and provided portion of data with a specified hash algorithm.

VerifyData(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, HashAlgorithmName, DSASignatureFormat)

Verifies that a digital signature is valid for the provided data.

VerifyData(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, HashAlgorithmName)

Verifies that a digital signature is appropriate for the current key and provided data with a specified hash algorithm.

VerifyData(Stream, Byte[], HashAlgorithmName, DSASignatureFormat)

Verifies that a digital signature is valid for the provided data.

VerifyData(Stream, Byte[], HashAlgorithmName)

Verifies that a digital signature is appropriate for the current key and provided data with a specified hash algorithm.

VerifyDataCore(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, HashAlgorithmName, DSASignatureFormat)

Verifies that a digital signature is valid for the provided data.

VerifyDataCore(Stream, ReadOnlySpan<Byte>, HashAlgorithmName, DSASignatureFormat)

Verifies that a digital signature is valid for the provided data.

VerifyHash(Byte[], Byte[], DSASignatureFormat)

Verifies that a digital signature is valid for the provided hash.

VerifyHash(Byte[], Byte[])

Verifies that a digital signature is appropriate for the current key and provided data hash.

VerifyHash(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, DSASignatureFormat)

Verifies that a digital signature is valid for the provided hash.

VerifyHash(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>)

Verifies that a digital signature is appropriate for the current key and provided data hash.

VerifyHashCore(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, DSASignatureFormat)

Verifies that a digital signature is valid for the provided hash.

Explicit Interface Implementations

IDisposable.Dispose()

This API supports the product infrastructure and is not intended to be used directly from your code.

For a description of this member, see Dispose().

(Inherited from AsymmetricAlgorithm)

Applies to