digital-certificate

Is there any way to programmatically determine if an .xls contains macros, without actually opening it in Excel? Also are there any methods to examine which certificate (including timestamp cert) these macros are signed with? Again without using Excel. I'm wondering in particular if there are any strings that always show up in the raw data of an Excel file when macros are present. Yes, you can open the .xls file as a compound document file and check whether is contains a VBA folder and streams containing VBA code. Sample code is available in this CodeProject article: Another OLE Doc Viewer but

I am relatively new to PKI, certificates and all related stuff. As far as I understand in public-key cryptography one encrypt with a public key and decrypt with a private key. Only one private key can correspond to any public key but the opposite is not true. Is it correct? Or is it one to one mapping? So, the way digital signature works is that the content of a certificate is hashed and then "signed" with a private key. The signature is verified then with the corresponding public key. So, here is where I get confused. What is the difference between encrypting a message with a public key and

I need a function in Delphi to verify the digital signature of an external EXE or DLL. In my particular application, I am going to occasionally invoke other processes, but for security purposes I want to make sure these executables were created by our organization before running them. I have seen Microsoft's example in C , however, I do not want to waste the time translating this to Delphi if somebody else already has. I would prefer a snippet or code example over a third-party library. Thanks. Here you go: // IsCodeSigned, which verifies that the exe hasn't been modified, uses //

How to create a digital certificate and export to .p12 file in PHP? I want the .p12 file to have private key included. And also want to check whether the key pair is already issued (logged in database). I found a function called 'openssl_pkcs12_export_to_file' but don't know where to start. Seems that I need an X509 cert and a private key first. <?php error_reporting(-1); function dump($Var) { echo "<hr/><pre>"; var_dump($Var); echo "</pre><hr/>"; } function check_errors() { echo "<hr/><pre>"; $Count = 0; while (($e=openssl_error_string())!==false) { echo $e."<br>"; $Count++; } if ($Count==0)

I am trying to setup the Royal Mail Shipping API (if anyone has any experience of this i'd be grateful if you could assist). In the documentation they provide I need to download a certificate (a .p12 file) & import this onto my Windows machine - this is pretty straightforward using the 'Certificate Import Wizard'. Once it gets to the "Set Security Level' I must select High & this will request permission with a password each time this is used. In Internet Explorer in 'Internet Options' within the Content tab I can view the Certificates and can clearly see that this certificate has been imported

The following code: //used Bouncy Castle provider for keyStore keyStore.setKeyEntry(alias, (Key)keyPair.getPrivate(), pwd, certChain); where certChain holds the end certificate and the issuer certificate (i.e. two certificates), doesn't save the issuer certificate as part of the chain in the saved to the file system keystore file if the keyStore is an instance of PKCS12 . It does save both certificates if the keystore type is PKCS12-3DES-3DES . Why is this? Doesn't a PKCS12 suppose to have both certificates are part of the chain? EDIT: Here's an SSCCE . This works fine with "JKS" , fails with