AsymmetricKeyAlgorithmProvider.CreateKeyPairWithCurveParameters Metodo

Definizione

Spazio dei nomi:

Windows.Security.Cryptography.Core

Crea una coppia di chiavi pubblica/privata asimmetrica usando i parametri della curva.

public:
 virtual CryptographicKey ^ CreateKeyPairWithCurveParameters(Platform::Array <byte> ^ parameters) = CreateKeyPairWithCurveParameters;

CryptographicKey CreateKeyPairWithCurveParameters(winrt::array_view <byte> const& parameters);

public CryptographicKey CreateKeyPairWithCurveParameters(byte[] parameters);

function createKeyPairWithCurveParameters(parameters)

Public Function CreateKeyPairWithCurveParameters (parameters As Byte()) As CryptographicKey

Parametri

parameters

Byte[]

byte[]

Matrice di byte contenenti i parametri della curva.

Restituisce

CryptographicKey

Rappresenta la coppia di chiavi asimmetrica ECDSA (Elliptic Curve Digital Signature Algorithm) generata.

Esempio

Nell'esempio seguente viene creata una nuova curva ECDSA dai parametri della curva.

Byte[] myCurveParameters =
{
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00,
0x15, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xAC, 0x73,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x3B, 0x4C, 0x38, 0x2C, 0xE3, 0x7A, 0xA1, 0x92,
0xA4, 0x01, 0x9E, 0x76, 0x30, 0x36, 0xF4, 0xF5, 0xDD, 0x4D, 0x7E, 0xBB, 0x93, 0x8C, 0xF9, 0x35,
0x31, 0x8F, 0xDC, 0xED, 0x6B, 0xC2, 0x82, 0x86, 0x53, 0x17, 0x33, 0xC3, 0xF0, 0x3C, 0x4F, 0xEE,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xB8, 0xFA, 0x16, 0xDF, 0xAB,
0x9A, 0xCA, 0x16, 0xB6, 0xB3, 0x01
};

AsymmetricKeyAlgorithmProvider eccAlgorithmProvider = 
                AsymmetricKeyAlgorithmProvider.OpenAlgorithm(AsymmetricAlgorithmNames.EcdsaSha256);
CryptographicKey keyPair = eccAlgorithmProvider.CreateKeyPairWithCurveParameters(myCurveParameters);

Byte^ myCurveParameters[] =
{
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00,
0x15, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xAC, 0x73,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x3B, 0x4C, 0x38, 0x2C, 0xE3, 0x7A, 0xA1, 0x92,
0xA4, 0x01, 0x9E, 0x76, 0x30, 0x36, 0xF4, 0xF5, 0xDD, 0x4D, 0x7E, 0xBB, 0x93, 0x8C, 0xF9, 0x35,
0x31, 0x8F, 0xDC, 0xED, 0x6B, 0xC2, 0x82, 0x86, 0x53, 0x17, 0x33, 0xC3, 0xF0, 0x3C, 0x4F, 0xEE,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xB8, 0xFA, 0x16, 0xDF, 0xAB,
0x9A, 0xCA, 0x16, 0xB6, 0xB3, 0x01
};

AsymmetricKeyAlgorithmProvider^ eccAlgorithmProvider = AsymmetricKeyAlgorithmProvider::OpenAlgorithm(
                                                                               AsymmetricAlgorithmNames::EcdsaSha256); 
CryptographicKey^ keyPair = eccAlgorithmProvider->CreateKeyPairWithCurveParameters(myCurveParameters);

Commenti

La chiave privata generata è un intero casuale. La chiave pubblica è un punto, con coordinate X e Y, su una curva ECDSA.