Ncryptopenstorageprovider New !exclusive!
// Open the default software-based provider if (NcryptOpenStorageProvider(&hProvider, NCRYPT_KEY_STORAGE_INTERFACE, dwFlags) != 0) // Handle error
Used for TPM-backed keys.
SECURITY_STATUS NCryptOpenStorageProvider( [out] NCRYPT_PROV_HANDLE *phProvider, [in, optional] LPCWSTR pszProviderName, [in] DWORD dwFlags ); Use code with caution. 2. Parameter Blueprint
: The default provider. It stores keys securely in a software-isolated environment handled by the OS key isolation system. ncryptopenstorageprovider new
The NCryptOpenStorageProvider function loads and initializes a CNG key storage provider. Unlike the legacy CryptoAPI, which bundled algorithms and storage together, CNG separates these concerns. A KSP acts as a specialized "container" for private keys, ensuring they remain isolated from the application process. Syntax at a Glance CNG Key Storage Providers - Win32 apps | Microsoft Learn
return 0;
# db-backup-policy.hcl allow # Only allow backup pods with specific label to read volume input.kubernetes.pod.labels["app"] == "postgres-backup" input.operation in ["read", "snapshot"] time.now < "2025-12-31T23:59:59Z" Parameter Blueprint : The default provider
In this article. ... The NCryptOpenStorageProvider function loads and initializes a CNG key storage provider. Microsoft Learn Example to use OpenSC with Microsoft CNG and CryptoAPI
ncryptopenstorageprovider new \ --provider-name <string> \ --backend <local|s3|gcs|azure-blob> \ --cipher <aes-256-gcm|chacha20-poly1305> \ --key-source <hsm|kms|passphrase-file> \ --auto-unseal <true|false> \ --quota <bytes> \ --policy <path/to/policy.hcl>
| Parameter | Required | Description | | :--- | :--- | :--- | | --provider-name | Yes | Unique logical name for the provider (used by mount commands). | | --backend | Yes | Storage backend for the encrypted blocks. | | --cipher | No (default: aes-256-gcm) | Authenticated encryption algorithm. | | --key-source | Yes | Source of the root encryption key. | | --auto-unseal | No (default: false) | If true, uses a trust-on-first-use (TOFU) model. | | --quota | Yes | Maximum size of the encrypted storage pool. | | --policy | No | Path to a HashiCorp Sentinel or OPA policy for access rules. | Unlike the legacy CryptoAPI, which bundled algorithms and
: This function should never be called from within a service's StartService function to avoid potential deadlocks.
With the increasing demand for cloud-agnostic, encrypted persistent storage in containerized environments, the existing csi-provisioner and tree plugins often lack granular cryptographic control at the volume level. The command ncryptopenstorageprovider new introduces a standardized interface for generating cryptographically secured storage volumes. This paper outlines the design principles, command syntax, and security architecture of the new provider initialization process.
+-------------------------------------------------------+ | Your Application | +-------------------------------------------------------+ | v +-------------------------------------------------------+ | NCryptOpenStorageProvider (ncrypt.h) | +-------------------------------------------------------+ | +-----------------+-----------------+ | | | v v v [Software KSP] [Smart Card KSP] [TPM KSP]
| Flag | Behavior | | :--- | :--- | | 0 | Opens the default instance of the provider. If the provider is already opened elsewhere in the process, you may receive a handle to the same instance. | | (Conceptual) | Forces the creation of a fresh provider context. This is often mapped to NCRYPT_SILENT_FLAG or specific allocation flags that prevent reuse of cached handles. | | NCRYPT_SILENT_FLAG | Prevents UI dialogs from appearing (useful for background services). |
