SignTool.exe verify /pa returns exit code 1 from the code but works fine while running from command prompt

Question

Hi,
I am using SignTool.exe from a new Process() to verify a codesigned assembly and it returns the exit code 1 whereas it returns exit code 0 while i run the same from Visual Studio Command prompt. Please let me know your thoughts...
Here is my code snippet from VS2012 ultimate on Win7 PC.
p = new Process();
            p.StartInfo.FileName = "C:\\Program Files (x86)\\Microsoft SDKs\\Windows\\v7.0A\\Bin\\SignTool.exe";
            string args = @"verify";
            p.StartInfo.Arguments =  args + " "+ "/pa " + "/v "+ name;
            p.Start();
            p.WaitForExit();
            pexitcode = p.ExitCode;
//name = "C:\\Users\\v-maparn\\Documents\\Visual Studio 2012\\Projects\\CodesignVerification\\CodesignVerification\\bin\\Release\\Microsoft.IT.Core.dll"
Thanks,
Mani

Answer 1

Hi Amy,
Thanks for your reply. I am receiving the exit code 1 by the Process even though the SignTool is able to successfully verify the assembly. I ran the below command from command prompt and received no errors or warnings. I assume the exit code should be 0.
I have also verified that this assembly has digital signature embedded as you can see from the output.
output:
C:\Windows\system32>signtool.exe verify /pa /v "C:\Users\v-maparn\Documents\Visu
al Studio 2012\Projects\CodesignVerification\CodesignVerification\bin\Release\Mi
crosoft.IT.Security.UI.SystemSecurityManagement.SSMUIWebHost.dll"
Verifying: C:\Users\v-maparn\Documents\Visual Studio 2012\Projects\CodesignVerif
ication\CodesignVerification\bin\Release\Microsoft.IT.Security.UI.SystemSecurity
Management.SSMUIWebHost.dll
Signature Index: 0 (Primary Signature)
Hash of file (sha1): 1B58113B218260837A6B850561538A804B034F2A
Signing Certificate Chain:
    Issued to: Microsoft Root Certificate Authority
    Issued by: Microsoft Root Certificate Authority
    Expires:   Sun May 09 15:28:13 2021
    SHA1 hash: CDD4EEAE6000AC7F40C3802C171E30148030C072
        Issued to: Microsoft Code Signing PCA
        Issued by: Microsoft Root Certificate Authority
        Expires:   Mon Aug 31 14:29:32 2020
        SHA1 hash: 3CAF9BA2DB5570CAF76942FF99101B993888E257
            Issued to: Microsoft Corporation
            Issued by: Microsoft Code Signing PCA
            Expires:   Thu Apr 24 14:33:39 2014
            SHA1 hash: 108E2BA23632620C427C570B6D9DB51AC31387FE
The signature is timestamped: Mon Dec 30 02:58:12 2013
Timestamp Verified by:
    Issued to: Microsoft Root Certificate Authority
    Issued by: Microsoft Root Certificate Authority
    Expires:   Sun May 09 15:28:13 2021
    SHA1 hash: CDD4EEAE6000AC7F40C3802C171E30148030C072
        Issued to: Microsoft Time-Stamp PCA
        Issued by: Microsoft Root Certificate Authority
        Expires:   Sat Apr 03 05:03:09 2021
        SHA1 hash: 375FCB825C3DC3752A02E34EB70993B4997191EF
            Issued to: Microsoft Time-Stamp Service
            Issued by: Microsoft Time-Stamp PCA
            Expires:   Wed Feb 11 14:11:31 2015
            SHA1 hash: D967AB4CF991F11DA6E318C880F1AF1A9C8D2C7C
Successfully verified: C:\Users\v-maparn\Documents\Visual Studio 2012\Projects\C
odesignVerification\CodesignVerification\bin\Release\Microsoft.IT.Security.UI.Sy
stemSecurityManagement.SSMUIWebHost.dll
Number of files successfully Verified: 1
Number of warnings: 0
Number of errors: 0
C:\Windows\system32>
Thanks,
Mani