Mar 10, 2014 Key pair generation in elliptic curve follows the same principles as the other algorithms, the main difference being that, unlike algorithms such as RSA, elliptic curve keys exist only in the context of a particular elliptic curve and require to have curve parameters associated with them to be of any use. This program demonstrates how to generate elliptic curve cryptography (ECC) key pairs. Eckeycreate.c Example 'C' code for generating elliptic curve cryptography (ECC) key pairs. The program will create and display a new elliptic curve cryptography (ECC) key pair, similar to the output shown below. The Generate Elliptic Curve Diffie-Hellman Key Pair (OPM, QC3GENECDK; ILE, Qc3GenECDHKeyPair) API generates a Diffie-Hellman (D-H) private/public key pair. The key pair is used to create a shared secret key using the Calculate Diffie-Hellman Secret Key (OPM, QC3CALDS; ILE, Qc3CalculateDHSecretKey) API.

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Definition

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

Inheritance

ECDsa

Derived

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.
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.

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)	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.
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)
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.
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)	This method throws in all cases.
GenerateKey(ECCurve)	When overridden in a derived class, generates a new ephemeral public/private key pair for the specified curve, replacing the current key.
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 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.
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<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.
ImportParameters(ECParameters)	When overridden in a derived class, imports the specified parameters.
ImportPkcs8PrivateKey(ReadOnlySpan<Byte>, Int32)	Imports the public/private keypair from a PKCS#8 PrivateKeyInfo structure after decryption, replacing the keys for this object.
ImportSubjectPublicKeyInfo(ReadOnlySpan<Byte>, Int32)	Imports the public key from an X.509 SubjectPublicKeyInfo structure after decryption, replacing the keys for this object.
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.
SignData(Byte[], Int32, Int32, HashAlgorithmName)	Computes the hash value of a portion of the specified byte array using the specified ha

Generate Elliptic Curve Key Pair