The Windows CNG Cryptographic Primitive Functions have return values of type NTSTATUS. Several possible (symbolic) return values are mentioned, for example STATUS_AUTH_TAG_MISMATCH for the BCryptDe...

I have a certificate file provided by another party which I'm loading in my application and cannot export its private key parameters. It looks like the certificate is using CNG rather than CryptoAP...

Using the Windows CNG API, I am able to encrypt and decrypt individual blocks of data with authentication, using AES in GCM mode. I now want to encrypt and decrypt multiple buffers in a row. Accor...

I Currently perform a large amount of encryption/decryption of text in c# using AES. With a pure software system it can take quite a processor hit for a decent amount of time for the lots of datas...

I'm interested in trying to read fields out of a digital signature. I have code that calls CryptQueryObject, then CryptMsgGetParam to get some fields and finally CertFindCertificateInStore to load ...

I am looking for a cross platform way to share public keys for ECDSA signing. I had a great thing going from a performance perspective with CngKey and the standard .NET crypto libraries, but then I...

I've been trying to find how to import an ECC key from a file by ANY MEANS for ages. I have tried accessing an ECC cert from the Windows certificate store, from a .p12 file, and from a PKCS#8 OpenS...

I'm trying to test Windows Bcrypt. I have a test program: #include <bcrypt.h> #include <iostream> #include <string> #pragma comment (lib, "bcrypt.lib") int main(int argc, char*...

My application is acting as a switchboard to transfer very sensitive messages between two parties and I'm trying to figure out how I can do this without "looking" at the message they're trying to s...

I have a PKCS #12 (PFX) file that is a certificate with CNG RSA key and want to export the private key. MIIJ4gIBAzCCCZ4GCSqGSIb3DQEHAaCCCY8EggmLMIIJhzCCBgAGCSqGSIb3DQEHAaCCBfEEggXtMII F6TCCBeUGCyq...

I’m implementing RSA-OAEP with windows CNG libraries. So far I’ve been able to have a full (encryption/decryption) flow with CNG library and able to verify results with OpenSSL. However, this only ...

From a legacy program: bye[] rsaPrivateKeyExport = RSACryptoProvider.ExportCspBlob(true); These keys are stored in a file. As part of a legacy refresh, I need to use CNG RSA keys. So somethi...

https://learn.microsoft.com/en-us/sql/relational-databases/security/encryption/extensible-key-management-ekm says : SQL Server provides data encryption capabilities together with Extensible Key Ma...

I know the MS CNG private have this format - BCRYPT_ECCKEY_BLOB BYTE X[cbKey] // Big-endian. BYTE Y[cbKey] // Big-endian. BYTE d[cbKey] // Big-endian. Thus tried to import below key bytes - byte...

How can I get a NCRYPT_KEY_HANDLE for encryption/decryption with CNG from the private key of a PCCERT_CONTEXT from the windows certificate store? The CryptEncrypt function has been superceded by t...

I need to convert a EC private key generated by BouncyCastle to a CngKey in C#. Ultimately, I'm trying to create a PKCS12 that can be imported into the Windows Key Store and am following the inform...

I have the following problem, and cant find solution: While consuming APN (Apple push notifications) API, i implemented tokenized authorization. It's apple's new way of authorization on their push...

In the Microsoft CNG API (Cryptography API: Next Generation), there are two sets of functions that appear to do the same thing. The following functions start with BCrypt and perform key import/expo...

The Microsoft pages provide "minimal" information about the formats that can be used by CngKey.Import. Which actual formats are actually represented by the following CngKeyBlobFormat properties? ...

I'm trying to find a way to grant permissions for private key from powershell script. Certificate is stored in CNG. All ideas are welcome.

I'm trying to sign a file with ECDSA using the CNG API and a certificate from the Microsoft Certificate Store. I've read through a lot of documentation and and near done but I get hung up on import...

I'm struggling with a port of a couple of security libraries to the Windows Phone 8 and Windows Store 8 platform. I need a function which provides random numbers. Win32 has CryptGenRandom and even...

I'm working under the VS2013 ARM Developer Prompt. I'm trying to use Microsoft's Cryptography Next Generation (CNG), but I'm experiencing some non-trivial problems. I'm trying to compile a simple ...

This may sound like a strange question, and it feels a bit bizarre that I actually have to ask this, but after spending a couple hours looking over the MSDN documentation for the bcrypt routines th...

How can I get the public/private keys from an ECC-based X509Certificate2's into CngKey's for use with ECDsaCng and ECDiffieHellmanCng? I'm currently using RSA 2048 bit key pairs to sign/encrypt st...