Ncryptopenstorageprovider New May 2026

The NCryptOpenStorageProvider function is the primary entry point for using Cryptography API: Next Generation (CNG) key storage features in Windows. It loads and initializes a Key Storage Provider (KSP) and returns a handle used for all subsequent key operations, such as creating or opening persisted keys. C++ Syntax and Parameters

Related Commands

• Algorithms: AES-GCM-SIV for authenticated encryption; XChaCha20-Poly1305 where AES hardware absent.
• KDF: HKDF-SHA256 with per-file salt and context.
• Envelope encryption: per-file symmetric data key; data key encrypted with user master key.
• Master keys: generated per-user; support for passphrase-derived keys via Argon2id with recommended parameters.
• Key rotation: re-encrypt data keys under new master key; lazy re-encryption for large datasets.
• Auth: OAuth2/OpenID for user identity; support for WebAuthn for key unlocking.

• --backing-type (e.g., aws-ebs, azure-disk, vsphere)
• --encryption-algorithm (AES-256-GCM, ChaCha20-Poly1305)
• --kms-provider (Vault, AWS KMS)
• --tenant-id (for multi-tenant clusters)