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Definition

Creates a new instance of an implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA).

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SSH-2 protocol: – SSH-2 supports multiple key types that include – Digital Signature Algorithm (DSA), Elliptic Curve Digital Signature Algorithm (ECDSA) and Ed25519. The above description is a detailed brief on downloading and running PuTTYgen on all major operating systems. 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.

Overloads

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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).

Creates a new instance of the default implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA).

Returns

A new instance of the default implementation (ECDsaCng) of this class.

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.

Parameters

Returns

A new instance of the default implementation (ECDsaCng) of this class.

See also

Creates a new instance of the default implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA) using the specified parameters as the key.

Parameters

parameters

ECParameters

The parameters representing the key to use.

Returns

A new instance of the default implementation (ECDsaCng) of this class.

See also

Creates a new instance of the specified implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA).

Parameters

algorithm

String

The name of an ECDSA implementation. The following strings all refer to the same implementation, which is the only implementation currently supported in the .NET Framework:

• 'ECDsa'

• 'ECDsaCng'

• 'System.Security.Cryptography.ECDsaCng'

You can also provide the name of a custom ECDSA implementation.

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Returns

A new instance of the specified implementation of this class. If the specified algorithm name does not map to an ECDSA implementation, this method returns null.

Exceptions

The algorithm parameter is null.

Remarks

If you develop your own implementation of an ECDsa object, you can use the Create(String) method overload to create a custom algorithm string that specifies your implementation.

If you specify a custom value for the algorithm parameter, the CryptoConfig object will use it to determine whether an ECDSA object can be created.

Applies to

To enable ECDSA public-key algorithms for Tectia Client, do the following:

1. In the Tectia Connections Configuration GUI, go to General > Default Connection and select the Authentication tab.

2. Move ecdsa-sha2-nistp256, ecdsa-sha2-nistp384 and ecdsa-sha2-nistp521 to the Enabled Algorithms list:

   Figure 2.1. Enabling ECDSA public-key signature algorithms

3. Once you have enabled the elliptic curve algorithms, you can change the order of the list using the red up and down arrow buttons. Tectia Client reads the list in the top-down order. The list will look like this if the ECDSA algorithms are ordered at the top:

4. Click Apply.

Note
To enable ECDSA keys for X.509, repeat the process above but select the keys named x509v3-ecdsa-sha2-* instead.

1. In the Tectia Connections Configuration GUI, go to User Authentication > Keys and Certificates. Under Key and Certificate List, click New key...

2. Provide a file name for the key.

3. Click Advanced Options.

4. For Key type, select ECDSA.

5. Select the Key length. A 256-bit ECDSA key provides a level of security equivalent to a 3072-bit DSA or RSA key.

   Figure 2.2. Creating an ECDSA key using the Public-Key Authentication Wizard

6. To generate the key, click Next.

7. The wizard takes you to the Upload Public Key page. If you do not wish to upload the key to a server, click Cancel.

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