I ran accross a CSR file (Certificate Signing Request) and I need to extract some information from it.
There's a way to decode it using .NET Framework?
4 Answers
It's not .NET, but for interactive use, try the OpenSSL utilities. Specifically:
openssl req -text -in request.csr
certutil -dump file.csr
Will also dump all relevant information. Builtin in Windows by default.
Decoding a CSR is easy if you employ the OpenSSL.NET library:
// Load the CSR file
var csr = new X509Request(BIO.File("C:/temp/test.csr", "r"));
OR
var csr = new X509Request(@"-----BEGIN CERTIFICATE REQUEST-----...");
// Read CSR file properties
Console.WriteLine(csr.PublicKey.GetRSA().PublicKeyAsPEM);
Console.WriteLine(csr.Subject.SerialNumber);
Console.WriteLine(csr.Subject.Organization);
.
.
.
X509Request type has properties to get everything out of your CSR file text.
Try Liping Dai's website. His LCLib has ASN1 Parser which wrote in C#. It can decode CSR. Work for me.
