Search thumbprint in Windows certificate store

[Droesjba 0]

Given a certain Thumbprint, does ICS offer support for finding the certificate with the given thumbprint from the Windows certificate store? (for Local Machine)

[Angus Robertson 526]

Yes, this is illustrated in the PemTool sample, on the Certificate Tools tab, select a Windows store and click Display Cert Store. 

 

This fills a TMsX509List using the LoadFromStore method, the sample displays the main information for all certificates found, but you can use the Find method to get the certificate with a specific SHA1 digest.  If you want the SHA256 digest you'll have to loop checking each.

 

Angus

 

[Droesjba 0]

I'm using the LoadFromStore method. My program raises an exception (Access violation at address 00000000).

This occurs in method MsCertToX509 of OverbyteIcsMsSslUtils.pas

To be precise: at line 307 in the statement:  

Result := d2i_X509(nil, @p, x.cbCertEncoded);

 

So the function d2i_X509 of OverbyteIcsLIBEAY.pas seems to be the origin of the exception.

 

The PemTool sample works fine, no problems. My program has administrator rights.

 

Any suggestions?

[Lajos Juhász 240]

32 minutes ago, Droesjba said:

Any suggestions?

Debug your code and find out what is nil.

[Angus Robertson 526]

You probably have not initialised OpenSSL to load the DLLs with OverbyteIcsWSocket.LoadSsl

 

Angus

 

Edited October 11, 2022 by Angus Robertson

[Droesjba 0]

Yes, that's it!

Disabling this statement in the PemTool leads to the exception.

Thanks!

Edited October 12, 2022 by Droesjba