ECDiffieHellmanOpenSsl Constructors

Definition

Namespace:

System.Security.Cryptography

Assembly:

System.Security.Cryptography.dll

Overloads

ECDiffieHellmanOpenSsl()	Initializes a new instance of the ECDiffieHellmanOpenSsl class with a default curve of NIST P-521/secp521r1.
ECDiffieHellmanOpenSsl(Int32)	Initializes a new instance of the ECDiffieHellmanOpenSsl class defaulting to the NIST prime curve of the specified size.
ECDiffieHellmanOpenSsl(IntPtr)	Initializes a new instance of the ECDiffieHellmanOpenSsl class from an existing OpenSSL key represented as an EC_KEY*.
ECDiffieHellmanOpenSsl(ECCurve)	Initializes a new instance of the ECDiffieHellmanOpenSsl class and generates a new key on the specified curve.
ECDiffieHellmanOpenSsl(SafeEvpPKeyHandle)	Initializes a new instance of the ECDiffieHellmanOpenSsl class from an existing OpenSSL key represented as an EVP_PKEY*.

ECDiffieHellmanOpenSsl()

Source:

ECDiffieHellmanOpenSsl.cs

Initializes a new instance of the ECDiffieHellmanOpenSsl class with a default curve of NIST P-521/secp521r1.

C#

[System.Runtime.Versioning.UnsupportedOSPlatform("android")]
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
[System.Runtime.Versioning.UnsupportedOSPlatform("ios")]
[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]
[System.Runtime.Versioning.UnsupportedOSPlatform("windows")]
public ECDiffieHellmanOpenSsl();

Attributes

UnsupportedOSPlatformAttribute

Remarks

This constructor does not generate a new public/private keypair immediately, it just sets the size which will be used to generate a key when one is needed. If key is loaded via the ImportParameters method, or other key import method, the key size from this constructor has no meaning.

See also

• Create()

ECDiffieHellmanOpenSsl(Int32)

Source:

ECDiffieHellmanOpenSsl.cs

Initializes a new instance of the ECDiffieHellmanOpenSsl class defaulting to the NIST prime curve of the specified size.

C#

[System.Runtime.Versioning.UnsupportedOSPlatform("android")]
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
[System.Runtime.Versioning.UnsupportedOSPlatform("ios")]
[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]
[System.Runtime.Versioning.UnsupportedOSPlatform("windows")]
public ECDiffieHellmanOpenSsl(int keySize);

Parameters

keySize

Int32

The size of the key to generate, when a key is needed.

Attributes

UnsupportedOSPlatformAttribute

Exceptions

CryptographicException

The keySize value is not supported by this implementation.

Remarks

Only three key sizes are supported by this constructor: 256 (NIST P-256/secp256r1), 384 (NIST P-384/secp384r1), and 521 (NIST P-521/secp521r1). To generate keys For any other curve, use the ECDiffieHellmanOpenSsl(ECCurve) constructor or the GenerateKey(ECCurve) method.

This constructor does not generate a new public/private keypair immediately, it just sets the size which will be used to generate a key when one is needed. If key is loaded via the ImportParameters method, or other key import method, the key size from this constructor has no meaning.

See also

• Create()
• ECDiffieHellmanOpenSsl(ECCurve)
• GenerateKey(ECCurve)

ECDiffieHellmanOpenSsl(IntPtr)

Source:

ECDiffieHellmanOpenSsl.cs

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

C#

[System.Runtime.Versioning.UnsupportedOSPlatform("android")]
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
[System.Runtime.Versioning.UnsupportedOSPlatform("ios")]
[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]
[System.Runtime.Versioning.UnsupportedOSPlatform("windows")]
public ECDiffieHellmanOpenSsl(IntPtr handle);

Parameters

handle

IntPtr

The OpenSSL EC_KEY* value to use as the key.

Attributes

UnsupportedOSPlatformAttribute

Exceptions

ArgumentException

handle is Zero.

CryptographicException

handle is not a valid EC_KEY*.

Remarks

Важно

OpenSSL supports multiple library versions being loaded within the same process. Before calling this constructor, verify your pointer value came from the same version of OpenSSL that this class uses. For more information, see OpenSslVersion.

See also

• OpenSslVersion

ECDiffieHellmanOpenSsl(ECCurve)

Source:

ECDiffieHellmanOpenSsl.cs

Initializes a new instance of the ECDiffieHellmanOpenSsl class and generates a new key on the specified curve.

C#

[System.Runtime.Versioning.UnsupportedOSPlatform("android")]
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
[System.Runtime.Versioning.UnsupportedOSPlatform("ios")]
[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]
[System.Runtime.Versioning.UnsupportedOSPlatform("windows")]
public ECDiffieHellmanOpenSsl(System.Security.Cryptography.ECCurve curve);

Parameters

curve

ECCurve

The curve used to generate an ephemeral public/private key pair.

Attributes

UnsupportedOSPlatformAttribute

Exceptions

CryptographicException

curve does not validate.

See also

• Validate()

ECDiffieHellmanOpenSsl(SafeEvpPKeyHandle)

Source:

ECDiffieHellmanOpenSsl.cs

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

C#

[System.Runtime.Versioning.UnsupportedOSPlatform("android")]
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
[System.Runtime.Versioning.UnsupportedOSPlatform("ios")]
[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]
[System.Runtime.Versioning.UnsupportedOSPlatform("windows")]
public ECDiffieHellmanOpenSsl(System.Security.Cryptography.SafeEvpPKeyHandle pkeyHandle);

Parameters

pkeyHandle

SafeEvpPKeyHandle

The OpenSSL EVP_PKEY* value to use as the key, represented as a SafeEvpPKeyHandle.

Attributes

UnsupportedOSPlatformAttribute

Exceptions

ArgumentException

pkeyHandle represents an invalid handle.

ArgumentNullException

pkeyHandle is null.

CryptographicException

pkeyHandle does not represent a elliptic curve (EC) key.

Remarks

Важно

OpenSSL supports multiple library versions being loaded within the same process. Before calling this constructor, verify your pointer value came from the same version of OpenSSL that this class uses. For more information, see OpenSslVersion.

See also

• OpenSslVersion