Using the copycert.pfx file gives me the same error but when I try to install copycert.pfx through the file or import it using a web browser I get: "The import was successful" message, but can't find the installed certificate under the "Personal" tab as I would if I installed the original originalcert.pfx. Starting in .NET Core 3.0 you can do this relatively simply: (of course, if you had a PEM you need to "de-PEM" it, by extracting the contents between the BEGIN and END delimiters and running it through Convert.FromBase64String in order to get binaryEncoding). In the end i did this, and it works fine: Thanks for contributing an answer to Stack Overflow! How to digitally sign PDF using X509Certificate2 in C# and VB.NET Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Checking Irreducibility to a Polynomial with Non-constant Degree over Integer. There are a couple of different things you're asking for, with different levels of ease. Digital signature in c# without using BouncyCastle, C# How to create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office, Polyform Noncommercial - Starting May 2020, How to get .pem file from .key and .crt files, Windows How to create .pfx file from certificate and private key, Azure Get pfx from crt and txt containing private key, C# Convert Certificate and Private Key to .PFX programmatically in C#. According to your description, you can refer to the following reference to create X509Certificate2 from cert and key file. So this is great, however I have to issue an openssl command to make a pfx file from the Certificate and the Private Key, then make up some password. If so where can I find these files? Refer here to explore the rich set of Syncfusion Essential PDF features. How can I properly set the PrivateKey of the X509Certificate2 based on the private key in the PEM file? Why did DOS-based Windows require HIMEM.SYS to boot? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How to get .pem file from .key and .crt files? My mistake. I don't know if it currently exists in .Net, but I have been researching this for weeks and have not been able to create a PFX from the .cer file X509Certificate2 and the private key .key (PKCS8). However it can also happen just sometimes, randomly. Your keys may already be in PEM format, but just named with .crt or .key. Why did DOS-based Windows require HIMEM.SYS to boot? Besides, if references didn't help you, please provide more information about your 'keyFile',which will help us to analyze and reproduce your problem. Seems like this would require a api review .since I need to add a new eddsa class which is public and I needed to change it to be able to correctly parse the private key asn.1 format since the existing ecdsa parser fails since the format is different. (Workarounds would be possible by writing a custom loader using Pkcs12Info, P/Invoking to OpenSSL to load a EdDSA key object, and using private reflection to force the cert object to know about the private key but since that involves private reflection it isn't anything that we'd support or guarantee works across updates). on .NET Framework (but not .NET Core) if your private key is RSACryptoServiceProvider or DSACryptoServiceProvider you can use cert.PrivateKey = key, but that has complex side-effects and is discouraged. at System.Security.Cryptography.RSACryptoServiceProvider..ctor(CspParameters parameters) A standard .NET application tries to install a certificate in a PFX file (PKCS12) programmatically by using the X509Certificate or X509Certificate2 class with code like the following example: The following type of exception will occur when you try to use the certificate's private key within another application: X509Certificate2.Import, System.Security.Cryptography.X509Certificates 565), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Its not really a bug, just a scary side effect. The Swift-only bindings continues to be the source of trouble. Sadly that option is not supported on MacOs it seems, This option is not present in .Net Standard, it would seem only .Net Core, Update: You can simply use `((X509KeyStorageFlags)32)` to get around this in .Net Standard. The thing is that on my two servers these files are not named the same thing. When the certificate is loaded, the private key is also written to a path that looks like: So again, there's a chance that other accounts don't have access to this file. This article helps you resolve exceptions when you install a PFX file by using X509Certificate from a standard .NET application. Looking for job perks? For DSA certificates, the accepted private key PEM label is "PRIVATE KEY". What is scrcpy OTG mode and how does it work? Upon installation, both services generate a self-signed X509 certificate. Code snippets are platform independent. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, I'm using .net 4, if it makes any difference, Hi Conrad, I know this is old, I'm stuck with exact same problem, can we have a chat and sort this out. Required fields are marked *, How to support TLS PSK in C# (Pre-shared key). I find a related references aboutthe error "ASN1 corrupted data". Find centralized, trusted content and collaborate around the technologies you use most. For the most part the answer for this is in Digital signature in c# without using BouncyCastle, but if you can move to .NET Core 3.0 things get a lot easier. Not the answer you're looking for? Certificate.HasPrivateKey returns true. Thank you. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. You should never instantiate a X509Certificate2 with the "new" keyword if you can avoid it, it is one of the most dangerous constructors in .NET - X509Certificate2, and if you do, you must be aware of these gotchas. [API Proposal]: Create PFX file (PKCS#12) from .cer .key and - Github How is white allowed to castle 0-0-0 in this position? Futuristic/dystopian short story about a man living in a hive society trying to meet his dying mother. Which one to choose? But the cause will probably be because you don't have permissions to that key file. NuGet package as reference to your .NET Framework application from. This code is a combination of overly strict and overly accepting for real BER rules, but this should read validly encoded PKCS#8 files unless they included attributes. Is there a weapon that has the heavy property and the finesse property (or could this be obtained)? Then include this password in my code. Not the answer you're looking for? Another comment here is that I am running the application in a Docker container in Kubernetes, so then CngKey won't work anyway? Is there a way to make up a X509Certificate2 from the Cert, and then apply the Private Key. What were the most popular text editors for MS-DOS in the 1980s? I write new blog posts about once a month. I dont remember the exact property to look in, but if you drill down into the private key part of the object, you will find a container name. The reason for why I am using PEM format is that the certificate is stored as a secret in Kubernetes. Does the 500-table limit still apply to the latest version of Cassandra? We don't have any way of representing the EdDSA keys internally, so we think that the private key blob is invalid. The certificate is already in PEM format. Octopus Deploy utilizes X.509 certificates to allow for secure communication between the central Octopus server, and the remote agents running the Tentacle service. For the certificate, the first certificate with a CERTIFICATE label is loaded. How to combine several legends in one frame? Windows has an MMC snapin that allows you to store certificates. Since that folder isn't really meant to be a profile folder, the Windows cryptography API will prevent you from trying to write anything. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? The content you requested has been removed. If specified, the path for the PEM-encoded private key. Thanks for contributing an answer to Stack Overflow! StoreName.My maps to the Personal folder in recent versions of Windows. Creates a new X509 certificate from the file contents of an RFC 7468 PEM-encoded certificate and private key. Would you have any idea why this happens? The contents of the file path in keyPemFilePath contains a key that does not match the public key in the certificate. A key exists for each store name (folder), and then under the Certificates sub key is a key with a long, random-looking name. I am trying to create a X509Certificate2 with the private key. How to create a X509Certificate2 from crt and key files? @heydy Ah, since CngKey.Import doesn't let you name the key it can't bind it without doing a different export/import, but the key isn't exportable (. MSDN Community Support What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? Certificates for the current user can go to: While certificates for the machine (StoreLocation.LocalMachine, or the "Computer account" option) go to: What exactly is written there? seems clumsy. Looking for job perks? What differentiates living as mere roommates from living in a marriage-like relationship? The certificate uses an unknown public key algorithm. One option is to try stopping any services that run under that account (including application pools) and then logging in interactively to the computer as the user to force a profile to be created. To learn more, see our tips on writing great answers. Does this also happen running .net core 3 on macos or linux? Would it be possible somehow to read the certificate as a string, convert the content to PFX format - and then use this as input to X509Certificate2's constructor? The path for the PEM-encoded X509 certificate. These server certificates require additional steps when hosting a TcpListener in C# (I guess because the CSR wasn't used) but what if I do have the Private Key, and the Certificate that OpenSSL generates/uses. ExcelLibrary seems to still only work for the older Excel format (.xls files), but may be adding support in the future for newer 2007/2010 formats. This one is harder, unless you've already solved it. There are also X509Certificate2.CreateFromEncryptedPem and X509Certificate2.CreateFromEncryptedPemFile if the contents is encrypted. Your email address will not be published. Decrypt with PrivateKey X.509 Certificate, read pem file, get 63 bytes in DQ parameter, Associate a private key with the X509Certificate2 class in .net. Project With the sdk=Microsoft.net.sdk.web Target Framework: net 5.0 How to get .pem file from .key and .crt files? It's very simple, small and easy to use. Making statements based on opinion; back them up with references or personal experience. MSDN Support, feel free to contact [email protected]. To get the private key I am traying this code: using System; using System.Security.Cryptography; namespace whats_new { public static class RSATest { public static void Run(string keyFile) { using var rsa = RSA.Create(); byte[] keyBytes = System.IO.File.ReadAllBytes(keyFile); rsa . Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, RunTime Error System.Security.Cryptography.CryptographicException: 'Bad Data. ' @heydy Apparently I felt inspired today, and made a lightweight PKCS8 reader. That's because the file couldn't be written or read, but you won't actually see an error message about this. Then include this password in my code. I want to create a X509Certificate2 object based on a PEM file. Starting in .NET Framework 4.7.2 or .NET Core 2.0 you can combine a cert and a key. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Thanks! This is my personal blog where I write about my journey with Octopus and software development. It seems to be more actively updated and documented as well. Use the following code snippet to add a digital signature in the PDF document. It works without fail, and though is an external application to reference (and less clean or pure code), it works! Or is it the same for .NET 5+ on Linux? To learn more, see our tips on writing great answers. X509Certificate2 Fails to load Pfx files that contain a 25519 - Github In .NET, the X509Certificate2 object has properties for the PublicKey and PrivateKey. Asking for help, clarification, or responding to other answers. Then I'll end up with the private key stored in the registry. Find centralized, trusted content and collaborate around the technologies you use most. @Clint, I left my solution with the OpenSSL call in place. But that's largely for convenience. Interesting findings. The other useful tool is a .NET sample called FindPrivateKey.exe which does what it says on the tin. I was wondering if this step was quite necessary. Even if the default implementation would not be provided on Windows I could use the same API shape and plug-in my NSec-based implementation instead. PFX cannot be stored in PEM format), so just read raw bytes and convert them. PEM-encoded items that have a different label are ignored. Counting and finding real solutions of an equation. More info about Internet Explorer and Microsoft Edge. It is because I have created the certificate with OpenSsl I generated one file for the certificate What is Wario dropping at the end of Super Mario Land 2 and why? Update: So, when I try: using (CngKey key = CngKey.Import(p8bytes, CngKeyBlobFormat.Pkcs8PrivateBlob)) { var rsaCng= new RSACng(key); X509Certificate2 certWithPrivateKey = certificate.CopyWithPrivateKey(rsaCng); }, the RSACng object is fine, but when CopyWithPrivateKey is called, I get an exception stating 'The requested operation is not supported'.. can you see any obvious mistakes there?