Cannot find cetificates through certificatestore class

Question

Hi - I retied to use CertificateStore.FindCertificates to get existing certificate for email signing. However, it never returns any certificate back from My store no matter what find options I used. My code looks like this:

CertificateStore certStore = new CertificateStore(CertificateStoreName.My); //search from personal cert store
CertificateFindOptions findOptions = 
CertificateFindOptions.ServerAuthentication|
CertificateFindOptions.ClientAuthentication|
CertificateFindOptions.HasPrivateKey | 
CertificateFindOptions.IsTimeValid; //I started with one by one, and even I combine them all nothing works.
Certificate[] certs = certStore.FindCertificates(findOptions);

My questions are: 1) is there a way to list out all the certificates in the store? that way I can filter by CN name 2) Is there a way to convert certificate obtained from X509 store into Rebex Certificate class?

Quick response is very appreciated. thanks! Gade

Answer 1

Hello,

1) to list all certificates (i.e. to specify no CertificateFindOptions) use CertificateFindOptions options = 0; as in the example:

var certStore = new CertificateStore(CertificateStoreName.My);
Certificate[] certs = certStore.FindCertificates(0);

2) converting between Rebex.Security.Certificates.Certificate class and X509Certificate (or X509Certificate2) classes is done automatically, so you can simply assign as in the example below:

X509Certificate x509Certificate;
Rebex.Security.Certificates.Certificate rebexCertificate;

...
rebexCertificate = x509Certificate; //convert X509Certificate into Certificate
x509Certificate = rebexCertificate; // convert vice versa

Comments

Thank you Thomas! The option 0 did list out all the certificates. However, the conversion of rebex cert into X509 cert wasn't successful. I tried both implicit and explicit conversion. Can you give me a working example if you have done it before?

---

The implicit conversion between Certificate and X509Certificate(2) class was added in release 2012R2. If you use earlier version you can convert Rebex into X509 Certificate like this:

Certificate rebexCert = ...;
var dotnetCert = new X509Certificate2(rebexCert.Handle);