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I can check this though signtool.exe and it results in the text output though below command. signtool.exe verify /v /pa "C:\test\ftdiport.cat"And this result the output in verbose mode in command prompt or we can redirect it to a text file as below. Verifying: C:\test\ftdiport.cat Signing Certificate Chain: Issued to: Class 3 Public Primary Certification Authority Issued by: Class 3 Public Primary Certification Authority Expires: 8/2/2028 5:29:59 AM SHA1 hash: 742C3192E607E424EB4549542BE1BBC53E6174E2 Issued to: VeriSign Class 3 Code Signing 2004 CA Issued by: Class 3 Public Primary Certification Authority Expires: 7/16/2014 5:29:59 AM SHA1 hash: 197A4AEBDB25F0170079BB8C73CB2D655E0018A4 Issued to: Future Technology Devices International Ltd Issued by: VeriSign Class 3 Code Signing 2004 CA Expires: 9/30/2010 5:29:59 AM SHA1 hash: 029E8FF6146EE9AEDA68092AB030057165B73A20 The signature is timestamped: 3/31/2010 6:10:55 PM Timestamp Verified by: Issued to: Thawte Timestamping CA Issued by: Thawte Timestamping CA Expires: 1/1/2021 5:29:59 AM SHA1 hash: BE36A4562FB2EE05DBB3D32323ADF445084ED656 Issued to: VeriSign Time Stamping Services CA Issued by: Thawte Timestamping CA Expires: 12/4/2013 5:29:59 AM SHA1 hash: F46AC0C6EFBB8C6A14F55F09E2D37DF4C0DE012D Issued to: VeriSign Time Stamping Services Signer - G2 Issued by: VeriSign Time Stamping Services CA Expires: 6/15/2012 5:29:59 AM SHA1 hash: ADA8AAA643FF7DC38DD40FA4C97AD559FF4846DE Successfully verified: C:\Users\ur00361883\Desktop\ftdiport.cat Number of files successfully Verified: 1 Number of warnings: 0 Number of errors: 0 One option is to parse this file and I need to get below details. Catalog file is Signed/Unsigned and Certificate issued for it and its expiry date. Is there any option like some libraries instead of parsing this text file whether in c#,vbscript,autoit or powershell or any platform. If no option, please guide me on how to parse this output.

Is there any library or api in Autoit to check whether a particular driver is signed or not and check for the certificate validity of the driver/catalog file if it is signed.?