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0
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1answer
34 views

Windows Explorer file property does NOT show digital signature info for some system file, why?

For example, PEauth.sys on Windows 7 and 8.1. Windows Explorer file property dialog does not show Digital Signature tab for this file, but Sysinternal sigcheck.exe says it is digitally signed. Can ...
3
votes
1answer
83 views

Git can't invoke gpg-agent to sign commits

I have Git 2.8.1 running in Ubuntu 15.10, and I've set it up to GPG sign all of my commits using my keybase key. It used to work well. At one point, I'm not sure what caused it, I started getting ...
0
votes
2answers
65 views

Lotus Notes: issue when import Symantec/Verisign certificate

In order to sign/encrypt Email I have installed Verisign S-Mime Certificate from Verisign and exported it from IE as a .pfx (PKCS #12). My problem is when I tried to import it in Security > My ...
0
votes
0answers
18 views

Digital certificate - “A smart card was detected but is not the one required for the current operation”

I need to sign a document digitally on a website using a certificate installed on my computer. When I try to sign I get "A smart card was detected but is not the one required for the current ...
1
vote
0answers
25 views

Digitally sign latex pdf document with CA

I would like to know, if it is possible to digitally invisible sign a pdf created by latex automatically after each time I create the document (I'm using Texnic Center) or after I created the ...
0
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0answers
35 views

Getting error when trying sign data1.cab file using signtool.exe

I am getting below error when tried to sign Data1.cab file using signtool.exe with some test certificate. SignTool Error: An unexpected internal error has occurred. Error information: "Error: ...
3
votes
2answers
304 views

Signtool can't do SHA256 signing on Windows 7

I have been using SHA1 signing for many years, but from 2016, Windows is forcing developers to use SHA256. Windows Enforcement of Authenticode Code Signing and Timestamping By using Windows 7 SDK ...
1
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0answers
25 views

Word to Pdf with assigned location for pdf signature [closed]

I've been able to add digital signature locations on both word an pdf files for a while now. However some of my word files are automaticly generated and than saved as PDF. when this file is saved I ...
0
votes
1answer
12 views

Is enrollment certificate a result of an export of the signing certificate

Newbie on digital signatures... Does the certificate that users would import come from me exporting from the signing certificate?
-1
votes
1answer
174 views

Disable driver signature enforcement for single driver installation only?

I just finished troubleshooting How can I enable two finger scrolling on Synaptic TouchPad in Windows 10? and sites: ...
1
vote
0answers
63 views

Setting up secure email on Thunderbird

I'm trying to set Thunderbird up to send/receive encrypted emails. Here is a screenshot from the screen where you can select certificates: However, it doesn't really explain the difference between ...
1
vote
1answer
19 views

Is there a way to make cygwin setup remember the -K option

I'm using cygwin 64-bit on Windows 8. I've also gotten some packages from the Cygwin Ports project. The instructions on the Cygwin Ports site for running cygwin setup include: cygstart -- ...
2
votes
2answers
53 views

Why is package/code signing considered more secure, and how does it work?

Kind of a noob question, but I've been reading about signing and how it makes linux distros more secure. Docker recently added image signing, which seems cool. Why is this so important? Just because I ...
1
vote
0answers
94 views

How to verify a software package using SHA256 checksums and PGP or GnuPG keys, on Windows?

I'd like to verify the Vagrant installation method using their recommended verification method. On the installation page it says: You can find the SHA256 checksums for Vagrant 1.7.4 online and you ...
2
votes
1answer
23 views

What is the minimum amount of data I need to sign a file?

Let's say I have a multi-gigabyte file on a work computer, and (2) I have my private GnuPG key on my home computer. I want to sign the really big file with my private key. I trust my home computer ...
0
votes
0answers
213 views

How to disable test mode while keeping warning for unsigned drivers (Windows 10)

I looked online but what I found are only ways to disable driver signature verification on Windows 8, 10 to be able to use unsigned drivers. This is not what I need. In my case (Windows 10 64 bit) I ...
1
vote
1answer
660 views

Sign & Encrypt vs. Encrypt & Sign - What does GPG do?

I’ve already read the discussion Should we sign-then-encrypt, or encrypt-then-sign? and the paper Defective Sign & Encrypt in S/MIME, PKCS#7, MOSS, PEM, PGP, and XML. My question has to do with ...
1
vote
0answers
47 views

How do I automatically sign HTML emails with Enigmail and Thunderbird?

I can't sign HTML messages with Enigmail. Even though "Sign messages" is checked as the default, when I look at the source of the draft or sent messages, there is no signature. View Source ...
0
votes
0answers
75 views

Create a server based digital signature services on Windows

I want to develop a system for digital signature services. here is the summary of my system scenario: Private keys are stored on HSM(e.g. nShield Connect) rather than smart card HSM is connected ...
-1
votes
1answer
129 views

Is it possible to disable drive signature verification on Windows 8?

When installing drivers, sometimes we need for the system to not ask for confirmation to the user (i.e: unattended or remote installations). A good example of this is the TAP network driver for ...
0
votes
0answers
135 views

Why the digital signature is invalid?

I have signed a pdf digitally with a valid certificate installed as a personal certificate in the keystore. When I open the file in my computer the signature is valid and the signer is the current ...
1
vote
2answers
7k views

VirtualBox fails to start on Windows Server 2003

For reasons I cannot disclose, I need to install a Linux server within a VirtualBox host running in Windows Server 2003. Unfortunately, VirtualBox fails to start, giving me an error that seems to ...
0
votes
0answers
44 views

What is the use of validating certificate in Adobe Reader

I've received a PDF which is digitally signed and they provided a guideline to validate the signature. I have done those steps, the signature shows as valid. I saved it as a copy and sent it back to ...
0
votes
1answer
76 views

Verify that a GPG-encrypted file is signed by particular user(s)

I've got a file encrypted and signed by GPG. In the man page for gpg, for the --decrypt option, it says: If the decrypted file is signed, the signature is also verified. I'd like to do more ...
2
votes
1answer
387 views

Delete the digital signature from a received Outlook message

My goal is to delete the digital signature in an Outlook message. My initial idea was to create a VBA script (which I have done below) to enumerate all attachments in the selected mail item and ...
2
votes
2answers
4k views

How do I disable digital signature checking for Windows 8.1 EFI files?

I'm trying to patch my bootmgfw.efi file to change the background color of the BitLocker password prompt and other Windows bootup screens. I found the values to search for and replace for the color ...
1
vote
3answers
299 views

OpenSSL 0.9.8zc -> 0.9.8zd “broke” my certificates.

I have a self-signed certificate (and CA) created on a Mac using OpenSSL 0.9.8zc. I use the certificate to secure connection to my svn server. With the latest OS X update, OpenSSL was updated to ...
2
votes
2answers
26 views

Signed application fails to launch

On a particular Windows Vista PC, all programs signed with a particular certificate fail to launch from explorer, when it verifies the publisher. Only for a second or two, the hour glass is visible, ...
-1
votes
1answer
31 views

Is there any point signing/encrypting personal email? [closed]

It works fine for corporate mail where everyone in the organization would have a certificate issued to them, but does anyone use certificates to sign their personal mail (let alone use encryption ...
1
vote
0answers
53 views

Export P12 from GnuPG for PDF signing field

It seems to be possible to export a PGP .asc file to .p12, but I'm unable to use the generated .p12 file for a signature field in a PDF file. Is there a way to export it so it's usable for that field, ...
0
votes
0answers
116 views

Validate a PADES document with expired certificate

I have a problem. I have a PDF that has been signed with a certificate, and then it has been put a timestamp with a TSA. I want to validate this document, but now, the certificate which it was used ...
0
votes
1answer
338 views

Firefox/Thunderbird export public key

I have imported a .p12 file inside Firefox/Thunderbird, now I would like to export its public key (without using openssl or whatever command line code), so I can distribute it and people can ...
2
votes
1answer
71 views

Hang when launching digitally signed executable

We have a weird problem on 2 PCs with running a digitally signed 120 Mb executable. If user launches a digitally signed .exe - then the launching host (e.g. Explorer or cmd.exe) will enter infinite ...
2
votes
0answers
273 views

How can I sign an MS Word macro with a digital certificate from the local machine certificate store?

I am trying to find out how I can digitally sign a Microsoft Word macro using a valid 3rd party CA issued VBA code-signing certificate that is installed into the machine rather than the user ...
1
vote
1answer
84 views

Why is Signature Displayed Inside White Rectangle in Adobe Document After Printing?

I am using latest Adobe Reader XI and after appying signature and printing .PDF document, I get signature displayed inside white rectangle and it covers what should be not covered. It looks as if ...
0
votes
1answer
70 views

Enforce encryption in Outlook 2010 for specific E-Mail addresses

There is a specific E-Mail address which I have to send data always encrypted and signed. I already configured everything, such that the E-Mails get encrypted and signed, but I often forget to turn on ...
-1
votes
1answer
120 views

Acrobat digital signature -mark as read only not working

I am using Acrobat XI Pro. I have created a simple form where the top half should be filled in then digitally signed by user 1. Then the bottom half should be filled by user 2, but user 2 should not ...
0
votes
1answer
239 views

Verify signed file using GPG by passing in signature hosted online rather than stored locally (i.e. in keyring)?

Is it possible to pass the URL of a GnuPG signature when executing a verify query against a signed file? For example, instead of: gpg --verify file.txt Is there a variation of something like: gpg ...
6
votes
1answer
12k views

How to sign gmail email with digital signature?

I have my personal digital signature on the special card and the according reader. How can I sign an email (sending it with gmail) with this signature? I am on the latest OSX and use Google Chrome ...
2
votes
0answers
1k views

Okular: how to sign a pdf?

How do I sign a PDF in Okular? I tried searching for about 20 mins, but I can't find any answers... I have a .png of my signature, and I basically want to insert it into the document on the dotted ...
3
votes
1answer
568 views

gpg: Can't check signature (FreeBSD)

I follow this SA https://www.freebsd.org/security/advisories/FreeBSD-SA-14:18.openssl.asc [FreeBSD 10.0] <= My FreeBSD version fetch <link>/openssl-10.0.patch fetch ...
2
votes
1answer
113 views

How much information is included with a GPG signature?

Let's say you verify someone's signature with GPG: $ gpg --decrypt statement.txt.sig "I am not a crook." gpg: Signature made 17 Nov 1973 9:31:50 AM CDT using RSA key ID 92861D99 gpg: Good signature ...
0
votes
1answer
2k views

How to add unsigned driver without prompt?

I want to install printer on a huge amount of Windows 7 machines. Some drivers are signed by recognized publishers, other not. When there are not, and I do the manual process, I get the message ...
1
vote
1answer
379 views

Can I use a “Microsoft Office” Digital ID / certificate to sign PDFs in Adobe Acrobat?

I've been needing to sign PDFs lately - fortunately everyone's been fine with me using a self-signed certificate, however I feel it's unprofessional. I'm looking for a personal certificate I can use ...
3
votes
1answer
102 views

How to merge several detached signatures from different people into one?

A group of people wants to publish a file and they all want to digitally sign the file as different recipients of the file will have different chains of trust. For simplicity, it's desired that there ...
4
votes
1answer
407 views

How to make computer (or user) trust signed software

I have an application, which I sign and timestamp using a code-signing certificate issued by thawte, with intermediate authority Thawte code signing CA - G2. The signature is OK (as it shows in file ...
2
votes
1answer
109 views

How can an unsigned driver affect the Windows OS?

There are lot of signed drivers (signed by Microsoft) that don't affect the Windows OS. If an unsigned driver is installed in a Windows machinehow can it affect the stability of the operating system, ...
1
vote
2answers
398 views

Generate a public key certificate signed by CA with OpenSSL

I am working on a webservice that requires a signature in the sent and received messages. After sending a certificate request to the entity that will consume the webservice, they sent me (in addition ...
1
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0answers
99 views

Microsoft Digital Signature Expiration in Active Directory

We have a large number of users on our network that need to sign forms digitally from time to time with Microsoft digital signatures that are set up to expire each year. Some of our users however are ...
2
votes
1answer
106 views

Can I sign my emails with both S/MIME and PGP/GPG?

And if it possible, is there any benefit from doing so in one order or the other? signWithSMIME(signWithPGP(message)) versus signWithPGP(signWithSMIME(message)) Also, are there any reason not to ...