Looking for job perks? The contents of the file path in keyPemFilePath do not contain a PEM-encoded private key, or it is malformed. Sign in The server.key is likely your private key, and the .crt file is the returned, signed, x509 certificate. We'd need to add plumbing to get the certificate to understand that it has an OpenSSL EdDSA key so that it can pass it back to OpenSSL from SslStream. Loading a PFX with unsupported algorithms reports bad password over unsupported algorithm. For server.key, use openssl rsa in place of openssl x509. I was wondering if this step was quite necessary. Thank you for your knowledge share. How to get .pem file from .key and .crt files? Import pfx file into particular certificate store from command line. rev2023.4.21.43403. What is the process required to create a, Is there some reason that I'm not seeing as to why you don't just use. How to create a X509Certificate2 from crt and key files? Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? What differentiates living as mere roommates from living in a marriage-like relationship? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. So if you have the file path then can call: var cert = X509Certificate2.CreateFromPemFile (filePath); If creating the certificate without the file then can pass in ReadOnlySpan<char> for the certificate thumbprint and key. Internal.Cryptography.CryptoThrowHelper+WindowsCryptographicException with message Bad Version of provider. This article helps you resolve exceptions when you install a PFX file by using X509Certificate from a standard .NET application. A certificate is something you are supposed to present to someone to prove something, and by design, it's only the public portion of the public/private key pair that is ever presented to anyone. 1- Create a .PEM certifcate from .cer file That name is actually the public thumbprint of the certificate. What is the difference between .NET Core and .NET Standard Class Library project types? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Then include this password in my code. VASPKIT and SeeK-path recommend different paths. C# - Export .pfx certificate and import it later as a file. Then I'll end up with the private key stored in the registry. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? 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. You can also use EPPlus, which works only for Excel 2007/2010 format files (.xlsx files). privacy statement. It seems that it may make sense to also create a opensslrawkey class similar to openssleckey. If you load in a new X509Certificate2 from a file by calling the public . Why is it shorter than a normal address? Using this library, you can add digital signature to the PDF document using X509Certificate2 class object in C# and VB.NET. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. But that's largely for convenience. In all, EPPlus seems to be the best choice as time goes on. EPPlus - GNU (LGPL) - No longer maintained However it can also happen just sometimes, randomly. I dont believe so. An administrator then establishes a trust relationship between the two by exchanging the public key thumbprints of each service to the other. I've had all kinds of bug reports about this. Note that the ExcelLibrary code is the single line at the bottom: Creating the Excel file is as easy as that. Starting with v16.2.0.x, if you reference Syncfusion assemblies from trial setup or from the NuGet feed, include a license key in your projects. 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 weapon that has the heavy property and the finesse property (or could this be obtained)? This most often occurs when a certificate is backed up incorrectly and then later restored. This is a common security model in B2B applications, and it means both services are able to authenticate without exchanging a shared secret or password, or being on the same active directory domain. Add some sort of listener to the files, to detect when they were last used. Not sure my guess is this never worked before. How to create .pfx file from certificate and private key? The constructor arguments allow the Cert only part, but encrypting fails then because there is no private key. 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. Include the following namespace in the Program.cs file. To convert PFX to Base64 string: to restore PFX from Base64 string and save to a file: Thanks for contributing an answer to Stack Overflow! I find a related references aboutthe error "ASN1 corrupted data". Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey. Target Framework: net 5.0 @Clint, I left my solution with the OpenSSL call in place. I'm not using commercial SSL certificates, and have a Root CA, that I use to issue server certificates. 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: Thanks, @bartonjs, If I got to .NET Core, ill use this - for now, I'l just use a Process() to get OpenSSL to make the .pfx file, since I have the .crt and .key files at hand. rev2023.4.21.43403. How a top-ranked engineering school reimagined CS curriculum (Ep. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. There are a couple of different things you're asking for, with different levels of ease. FirstOrDefault () gives you nice, readable and shorter code than the one youve got. That's because the file couldn't be written or read, but you won't actually see an error message about this. If you've just extracted the bytes from the Base64 encoding of the private key file you have a PKCS#1, PKCS#8, or encrypted PKCS#8 private key blob (depending on if it said "BEGIN RSA PRIVATE KEY", "BEGIN PRIVATE KEY" or "BEGIN ENCRYPTED PRIVATE KEY"). This is a good way to see where the certificates and keys are being read from and written to. That's a big problem because the file is created using GetTempFile. Certificate.HasPrivateKey returns true. But the cause will probably be because you don't have permissions to that key file. My mistake. 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. 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. Sometimes, you can create a certificate from a blob in memory using the X509KeyStorageFlags.MachineKeySet option. 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). 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. Since I'm specifying StoreLocation.LocalMachine, they go to: Then I have a problem. and then used, Where pvk is the byte array of the private key (read from GetBytesFromPEM as shown here how to get private key from PEM file? in vb.net when trying to import RSA parameters, Cannot Export PrivateKey Before Import Using RSACng and RsaParameter. The oid of the private key is: "1.3.101.112" which corresponds to the RFC oid for ED25510 Since the openssl raw function has uses outside of 25519. Just change the extension to .pem. If you have any compliments or complaints to Already on GitHub? Not the answer you're looking for? In the past I have been making secure TcpListener by exporting a PFX certificate with a password, but would like to know if this step could be skipped. Asking for help, clarification, or responding to other answers. They where added on openssl 1.1.1 so I had to Install on the dotnet runtime image libssl-dev. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Using .NET 5.0 we finally have a nice way of doing this. Here are some examples of times I've seen this: The best way to diagnose these issues is to run Procmon from SysInternals and to monitor the disk and registry access that happens when the key is imported and accessed. It will not write to the new .xlsx format yet, but they are working on adding that functionality in. On whose turn does the fright from a terror dive end? Tip 1: Understand the difference between certificates and PKCS #12/PFX files. The easiest / most formulaic is to just make a PFX with the cert and key, and let the X509Certificate2 constructor do its thing. used to create, read, and edit PDF documents. Have a question about this project? How can I control PNP and NPN transistors together from one pin? seems clumsy. (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). Though it's worth keeping in mind that supporting the primitive and supporting it in TLS / SslStream as the original issue asked for are different things. Also, it is important that I export from a .pfx file and import it later to a .pfx file. If other users on the machine (including service accounts) don't have access to that file (which they won't by default) they'll be able to load the certificate, but not the private key. Then log out, and restart the services. Not the answer you're looking for? Connect and share knowledge within a single location that is structured and easy to search. Replace first two lines of posted code with these two: PFX certificates support only pure binary encoding (i.e. https://cryptography.io/en/latest/x509/reference.html#cryptography.x509.oid.SignatureAlgorithmOID.ED25519. In .NET, the X509Certificate2 object has properties for the PublicKey and PrivateKey.But that's largely for convenience. Can the game be left in an invalid state if all state-based actions are replaced? The certificate is already in PEM format. @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 (. density matrix. In the end i did this, and it works fine: Thanks for contributing an answer to Stack Overflow! generate_25519_certs.txt. I basically need to export a .pfx certificate as a Base64string, store it in a database and recover it later, converting from Base64string. ", Effect of a "bad grade" in grad school applications. Yeah, I really want to figure out the "right" way to wire in / light up CryptoKit for macOS. If I look at Creating the X509Certificate2, they use. Besides, if references didn't help you, please provide more information about your 'keyFile',which will help us to analyze and reproduce your problem. EPPlus 5 - Polyform Noncommercial - Starting May 2020 Looking for job perks? To create a permanent key container for the private key, the X509KeyStorageFlags.PersistKeySet flag must be used to prevent .NET from deleting the key container. https://docs.microsoft.com/en-us/dotnet/api/system.security.cryptography.x509certificates.x509certificate2?redirectedfrom=MSDN&view=netframework-4.8, https://forums.iis.net/t/1224708.aspx?C+ProgramData+Microsoft+Crypto+RSA+MachineKeys+is+filling+my+disk+space, https://stackoverflow.com/questions/34527477/clean-my-machinekeys-folder-by-removing-multiple-rsa-files-without-touching-iis?noredirect=1&lq=1, https://stackoverflow.com/questions/22618568/prevent-file-creation-when-x509certificate2-is-created, https://docs.microsoft.com/da-dk/windows/win32/seccng/key-storage-and-retrieval, https://security.stackexchange.com/questions/1771/how-can-i-enumerate-all-the-saved-rsa-keys-in-the-microsoft-csp/102923, https://docs.microsoft.com/en-us/dotnet/api/system.security.cryptography.x509certificates.x509certificate2, Introducing the Next-Generation Bing Search: Smarter, Faster, and More Personalized than Ever Before, Add NuGet package XML documentation to Swagger, Heres why you should use gRPC for everything, %ALLUSERSPROFILE%\Application Data\Microsoft\Crypto\RSA\S-1-5-18\, %ALLUSERSPROFILE%\Application Data\Microsoft\Crypto\RSA\S-1-5-19\, %ALLUSERSPROFILE%\Application Data\Microsoft\Crypto\RSA\S-1-5-20\, %ALLUSERSPROFILE%\Application Data\Microsoft\Crypto\RSA\MachineKeys, %ALLUSERSPROFILE%\Application Data\Microsoft\Crypto\SystemKeys, %ALLUSERSPROFILE%\Application Data\Microsoft\Crypto\Keys, Microsoft Internet Information Server Certificate. Connect and share knowledge within a single location that is structured and easy to search. Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. How a top-ranked engineering school reimagined CS curriculum (Ep. How are we doing? 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. It would be unfortunate for you to spent a lot of time on this if it was later determined that it cannot be added until at least Windows provides similar functionality. It's the source of a lot of bug reports. I think theres a mistake in the code example Loading from the Certificate Store, the variable currentCerts is never used to find the cert by thumbprint, instead certCollection is used. to explore the rich set of Syncfusion Essential PDF features. The Swift-only bindings continues to be the source of trouble. I'm importing a certificate for the whole machine to use, so the certificate goes to the registry. We're actually going to embed some of this code into Octopus vNext to help provide better log errors when we have certificate problems. using (X509Certificate2 pubOnly = new X509Certificate2 ("myCert.crt")) using (X509Certificate2 pubPrivEphemeral = pubOnly.CopyWithPrivateKey (privateKey)) { // Export as PFX and re-import if you want "normal PFX private key lifetime . Its not really a bug, just a scary side effect. What I'm using at the moment is the X509Certificate2 class like the following: To convert it and store in DB the cert64 string: And get it later from DB (I need to store it as a Base64string): And it returns true when I compare C:\originalcert.pfx and C:\copycert.pfx using: For the application I'm running that requires a certificate to work properly, I sometimes get an error with some different .pfx certificates provided to me that I use to work around importing/installing to the machine and exporting it via web browser, creat a new .pfx file and voil. 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? Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. When a gnoll vampire assumes its hyena form, do its HP change? But the private key is being written to disk under my personal profile folder. Take a moment to peruse the documentation, where you can find other options like adding a digital signature using stream, signing an existing document, adding a timestamp in digital signature and features like protect PDF documents with code examples. The cryptography capabilities in Windows were obviously designed by someone way smarter than me. The constructor arguments allow the Cert only part, but encrypting fails then because there is no private key. How to combine several legends in one frame? A key exists for each store name (folder), and then under the Certificates sub key is a key with a long, random-looking name. 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. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. What is Wario dropping at the end of Super Mario Land 2 and why? Required fields are marked *, How to support TLS PSK in C# (Pre-shared key). Install the Syncfusion.Pdf.WinForms NuGet package as reference to your .NET Framework application from NuGet.org. End result: hang. StoreName.My maps to the Personal folder in recent versions of Windows. X509Certificate2.Create - learn.microsoft.com