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May 5th, 2021, 11:43 AM
#1
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Windows Authenticode signed attribute verification
Hello, I am trying to implement digital signature verification of PE files without using WinVerifyTrust.
When I check the signed attributes (AuthenticatedAttributes) field, I get a different hash than the decoded signature field (encryptedDigest).
What am I doing wrong?
Decoded signature: 0001ff..ff003031300d06096086480165030402010500042066cea53b15089957fc4ca86e419e2058f562e17a802e23e7d5 154d2e71412e1a
sha256 signed attributes: a6586da80afffdde75d9cdf0ef3a91edd741368d20a537fba8c06a5abbf8f85a
Authencode signature: https://lapo.it/asn1js/#MIIGRgYJKoZI...spfAB0nxhR6s9w
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May 7th, 2021, 03:00 PM
#2
Re: Windows Authenticode signed attribute verification
Hi Tima32, welcome to the forum. It would be easier for people to help you if you posted the code relating to your question.
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