Authenticode verification with signtool.exe

Damir Dobric Posts

Next talks:

 

    

Follow me on Twitter: #ddobric



 

 

Archives

This post shows two examples which shows how to verify signature of an application based on Authenticode policy. First example will fail, because the application is signed with the key, whose root certificate is not trusted.

Example 1 (it will fail)

C:\Program Files\Microsoft SDKs\Windows\v6.0A\bin>signtool verify /v /pa c:\temp
\SampleApplication.exe

Verifying: c:\temp\SampleApplication.exe
SHA1 hash of file: 99CE8EA6C1096C7CF9CD96C4A2E707A096CA1E76
SignTool Error: WinVerifyTrust returned error: 0x800B010D
        The certification path terminates with the test root which is not truste
d with the current policy settings.
Signing Certificate Chain:
    Issued to: Root Agency
    Issued by: Root Agency
    Expires:   01.01.2040 01:59:59
    SHA1 hash: FEE449EE0E3965A5246F000E87FDE2A065FD89D4

        Issued to: daenetauthenticode
        Issued by: Root Agency
        Expires:   01.01.2040 01:59:59
        SHA1 hash: 79FBF8FAE05640808B8B488BD5728B59B19D0766

File is not timestamped.
SignTool Error: File not valid: c:\temp\SampleApplication.exe

Number of files successfully Verified: 0
Number of warnings: 0
Number of errors: 1

Example 2 (it will succeed)

Now after the root certificate is installed under trusted publishers, the same verification will pass successfully.

image

C:\Program Files\Microsoft SDKs\Windows\v6.0A\bin>signtool verify /v /pa c:\temp
\SampleApplication.exe

Verifying: c:\temp\SampleApplication.exe
SHA1 hash of file: 99CE8EA6C1096C7CF9CD96C4A2E707A096CA1E76
Signing Certificate Chain:
    Issued to: Root Agency
    Issued by: Root Agency
    Expires:   01.01.2040 01:59:59
    SHA1 hash: FEE449EE0E3965A5246F000E87FDE2A065FD89D4

        Issued to: daenetauthenticode
        Issued by: Root Agency
        Expires:   01.01.2040 01:59:59
        SHA1 hash: 79FBF8FAE05640808B8B488BD5728B59B19D0766

File is not timestamped.
Successfully verified: c:\temp\SampleApplication.exe

Number of files successfully Verified: 1
Number of warnings: 0
Number of errors: 0


Posted May 02 2009, 04:37 PM by Damir Dobric
Filed under:

Comments

Anubhava wrote re: Authenticode verification with signtool.exe
on 01-06-2010 6:47

Hello Sir,

Where to install Root Certificate. and Please How to Apply for the application.

Thanks

Damir Dobric wrote re: Authenticode verification with signtool.exe
on 01-06-2010 9:10

-Root Certificate should be installed in "Trusted Authorities".

-Depending on the type of application authenticate can be used in various ways.

developers.de is a .Net Community Blog powered by daenet GmbH.