DSAOpenSsl Class

Definition

Provides an implementation of the Digital Signature Algorithm (DSA) backed by OpenSSL.

public ref class DSAOpenSsl sealed : System::Security::Cryptography::DSA
public sealed class DSAOpenSsl : System.Security.Cryptography.DSA
type DSAOpenSsl = class
    inherit DSA
Public NotInheritable Class DSAOpenSsl
Inherits DSA
Inheritance

Remarks

This class should only be used directly when doing platform interop with the system OpenSSL library. When platform interop is not needed, you should use the DSA.Create factory methods instead of a specific derived implementation.

Important

Newer asymmetric algorithms are available. Consider using the RSA class or the ECDsa class instead of the DSA class. Use DSA only for compatibility with legacy applications and data.

DSAOpenSSL provides the FIPS 186-3 version of DSA.

Constructors

DSAOpenSsl()

Initializes a new instance of the DSAOpenSsl class with a default key size of 2048 bits.

DSAOpenSsl(DSAParameters)

Initializes a new instance of the DSAOpenSsl class and imports parameters from an existing key.

DSAOpenSsl(Int32)

Initializes a new instance of the DSAOpenSsl class with a specified key size.

DSAOpenSsl(IntPtr)

Initializes a new instance of the DSAOpenSsl class from an existing OpenSSL key represented as a DSA*.

DSAOpenSsl(SafeEvpPKeyHandle)

Initializes a new instance of the DSAOpenSsl class from an existing OpenSSL key represented as an EVP_PKEY*.

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

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.

LegalKeySizes

Gets the key sizes, in bits, that are supported by the DSA 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)
CreateSignature(Byte[])

When overridden in a derived class, creates the DSA signature for the specified hash value.

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)
DuplicateKeyHandle()

Gets a SafeEvpPKeyHandle representation of the cryptographic key.

Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
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)
ExportParameters(Boolean)

Exports the DSAParameters representing this key.

ExportPkcs8PrivateKey()

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

(Inherited from AsymmetricAlgorithm)
ExportSubjectPublicKeyInfo()

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

(Inherited from AsymmetricAlgorithm)
FromXmlString(String)

Reconstructs a DSA object from an XML string.

(Inherited from DSA)
GetHashCode()

Serves as the default hash function.

(Inherited from Object)
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 a specified portion of a byte array by using a specified hashing algorithm.

(Inherited from DSA)
HashData(Stream, HashAlgorithmName)

When overridden in a derived class, computes the hash value of a specified binary stream by using a specified hashing algorithm.

(Inherited from DSA)
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 DSA)
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.

(Inherited from DSA)
ImportParameters(DSAParameters)

Imports the specified DSAParameters.

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 DSA)
ImportSubjectPublicKeyInfo(ReadOnlySpan<Byte>, Int32)

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

(Inherited from DSA)
MemberwiseClone()

Creates a shallow copy of the current Object.

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

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

(Inherited from DSA)
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.

(Inherited from DSA)
SignData(Stream, HashAlgorithmName)

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

(Inherited from DSA)
ToString()

Returns a string that represents the current object.

(Inherited from Object)
ToXmlString(Boolean)

Creates and returns an XML string representation of the current DSA object.

(Inherited from DSA)
TryCreateSignature(ReadOnlySpan<Byte>, Span<Byte>, Int32)

Attempts to create the DSA signature for the specified hash into the provided buffer.

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

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

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

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

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

Attempts to compute the hash value of the provided data into a provided buffer.

(Inherited from DSA)
TrySignData(ReadOnlySpan<Byte>, Span<Byte>, HashAlgorithmName, Int32)

Attempts to create the DSA signature for the specified data into the provided buffer.

(Inherited from DSA)
VerifyData(Byte[], 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.

(Inherited from DSA)
VerifyData(Byte[], Int32, Int32, 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.

(Inherited from DSA)
VerifyData(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, HashAlgorithmName)

Verifies that a digital signature is valid by calculating the hash value of the data in a byte span using the specified hash algorithm and comparing it to the provided signature.

(Inherited from DSA)
VerifyData(Stream, 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.

(Inherited from DSA)
VerifySignature(Byte[], Byte[])

Verifies if the specified digital signature matches the specified hash.

VerifySignature(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>)

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

(Inherited from DSA)

Explicit Interface Implementations

IDisposable.Dispose()

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

(Inherited from AsymmetricAlgorithm)

Applies to