When starting a new project requiring cryptographic key management, you should adopt CNG. Here is a typical workflow. 1. Opening the Provider To begin, you must load the provider.
#include #include #include void OpenProvider() NCRYPT_PROV_HANDLE hProvider = NULL; SECURITY_STATUS status; // Open the storage provider status = NCryptOpenStorageProvider( &hProvider, MS_KEY_STORAGE_PROVIDER, // "Microsoft Software Key Storage Provider" 0 // Flags ); if (status == ERROR_SUCCESS) printf("Provider opened successfully!\n"); // Always free the handle when finished NCryptFreeObject(hProvider); else printf("Error: 0x%x\n", status); Use code with caution. Copied to clipboard 🛠️ Key Components 1. Parameters
: A pointer to the handle variable that receives the newly initialized provider instance. ncryptopenstorageprovider new
By calling NCryptOpenStorageProvider , an application receives a unique provider handle ( NCRYPT_PROV_HANDLE ). This handle allows the software to securely provision, store, and interact with private keys across different types of physical or virtual underlying media. C++ Syntax and Technical Parameters
: A null-terminated Unicode string pointing to the registered name of the target KSP. Passing NULL forces Windows to fall back to the system's default software provider. When starting a new project requiring cryptographic key
To understand the "New" aspect, let us first look at the standard C++ function signature as defined in ncrypt.h :
MS_KEY_STORAGE_PROVIDER : The standard software-based provider. Opening the Provider To begin, you must load the provider
The NCryptOpenStorageProvider function remains a cornerstone of Windows CNG programming, and its modern .NET counterpart continues to evolve with new static properties like MicrosoftPlatformCryptoProvider . For developers building custom KSPs, the current Microsoft Cryptographic Provider Development Kit (CPDK) is based on Windows 8/Server 2008 and is outdated for Windows 11/Server 2022. The data structure for NCRYPT_PROV_HANDLE has been updated, and developers are actively seeking documentation for these changes.
SECURITY_STATUS NCryptOpenStorageProvider( [out] NCRYPT_PROV_HANDLE *phProvider, [in, optional] LPCWSTR pszProviderName, [in] DWORD dwFlags ); Use code with caution. Parameter Breakdown
apiVersion: storage.k8s.io/v1 kind: StorageClass metadata: name: ncrypt-gold provisioner: com.openstorage/ncrypt parameters: backend: "pxd" encryption: "true" kms: "vault" reclaimPolicy: "cryptshred" # Deletion does not delete keys