ExportKeyBlob()

static byte[] System.Security.Cryptography.CngKeyLite.ExportKeyBlob ( SafeNCryptKeyHandle keyHandle, string blobType )

inlinestaticpackage

Definition at line 58 of file CngKeyLite.cs.

    {
        global::Interop.NCrypt.ErrorCode errorCode = global::Interop.NCrypt.NCryptExportKey(keyHandle, IntPtr.Zero, blobType, IntPtr.Zero, null, 0, out var pcbResult, 0);
        if (errorCode != 0)
        {
            throw errorCode.ToCryptographicException();
        }
        if (pcbResult == 0)
        {
            return Array.Empty<byte>();
        }
        byte[] array = new byte[pcbResult];
        errorCode = global::Interop.NCrypt.NCryptExportKey(keyHandle, IntPtr.Zero, blobType, IntPtr.Zero, ref array[0], array.Length, out pcbResult, 0);
        if (errorCode != 0)
        {
            throw errorCode.ToCryptographicException();
        }
        if (array.Length != pcbResult)
        {
            Span<byte> buffer = array.AsSpan(0, pcbResult);
            byte[] result = buffer.ToArray();
            CryptographicOperations.ZeroMemory(buffer);
            return result;
        }
        return array;
    }

References System.array, System.buffer, System.Span< T >.ToArray(), System.IntPtr.Zero, and System.Security.Cryptography.CryptographicOperations.ZeroMemory().

Referenced by System.Security.Cryptography.ECDiffieHellmanImplementation.ECDiffieHellmanCng.ExportFullKeyBlob(), System.Security.Cryptography.ECDsaImplementation.ECDsaCng.ExportFullKeyBlob(), System.Security.Cryptography.DSAImplementation.DSACng.ExportKeyBlob(), System.Security.Cryptography.ECDiffieHellmanImplementation.ECDiffieHellmanCng.ExportKeyBlob(), System.Security.Cryptography.ECDsaImplementation.ECDsaCng.ExportKeyBlob(), and System.Security.Cryptography.RSAImplementation.RSACng.ExportKeyBlob().