(C#) Find a Certificate by it's SHA-1 Thumbprint

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Note: This example requires Chilkat v10.1.2 or later.

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Chilkat.CertStore certStore = new Chilkat.CertStore();

string thumbprint = "12c1dd8015f3f03f7b1fa619dc24e2493ca8b4b2";

// This opens the Current User certificate store on Windows,
// On MacOS and iOS it opens the default Keychain.
bool bReadOnly = true;
bool success = certStore.OpenCurrentUserStore(bReadOnly);
if (success == false) {
    Debug.WriteLine(certStore.LastErrorText);
    return;
}

// Find the certificate having a specific SHA1 thumbprint.
Chilkat.JsonObject json = new Chilkat.JsonObject();
json.UpdateString("thumbprint",thumbprint);

Chilkat.Cert cert = new Chilkat.Cert();
success = certStore.FindCert(json,cert);
if (success == false) {
    Debug.WriteLine("Failed to find the certificate.");
    return;
}

Debug.WriteLine("Found: " + cert.SubjectCN);

// -------------------------------------------------------------------------------------
// Alternatively, one could load a certificate store object with certs from a PEM file,
// and do the same thing..
Chilkat.CertStore certStorePem = new Chilkat.CertStore();

success = certStorePem.LoadPemFile("pemFiles/certificates.pem");
if (success == false) {
    Debug.WriteLine(certStorePem.LastErrorText);
    return;
}

success = certStore.FindCert(json,cert);
if (success == false) {
    Debug.WriteLine("Failed to find the certificate.");
    return;
}

Debug.WriteLine("Found: " + cert.SubjectCN);