Questions tagged [digital-signature]
The digital-signature tag has no usage guidance.
66
questions with no upvoted or accepted answers
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gpg: skipped "12345689": Unusable secret key / how to use signing subkey for gpg?
As you see, I have a key with id 12345689, and I'm trying to sign with it in git
gpg -k
/home/lz/.gnupg/pubring.kbx
---------------------------
pub rsa4096 2020-03-02 [C]
12345689
uid ...
4
votes
1
answer
3k
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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 ...
3
votes
0
answers
1k
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How to sign with a specific subkey using GnuPG?
Say I have two subkeys like below.
/c/Users/user/.gnupg/secring.gpg
---------------------------------
sec 2048R/DC****** 2017-05-25
uid J D <[email protected]>
ssb 2048R/...
3
votes
0
answers
286
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Windows 10: will drivers installed using testmode still work then testmode is disabled?
I have a general understanding problem with Windows Testmode and how to install unsigned drivers: I understand that if I have drivers (in my case for an USB to RS232 serial adapter) that are not ...
3
votes
1
answer
2k
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Preventing PDF document from having a digital signature added with long term signature validation?
I'm running into a new issue with PDF file sizes. It seems that Acrobat X and above now have by default enabled a preference called "Include Signature’s Revocation Status When Signing". Essentially ...
2
votes
0
answers
25
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Digital Signature for project
i want to know for me to sign digitally software(i am not a developer just an investor)
Do i need to use services like comodo or it can be done manually, for example i freelance soft like desktop app ...
2
votes
0
answers
88
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Can I use my own driver on Windows without having to ask MS for permission while keeping Secure Boot on?
As per the subject :
I want to write my own kernel mode driver
I want to be able to use it with Secure Boot on
I don't want to ask for permission to use it (no WHQL testing or attestation signing)
...
2
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0
answers
3k
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Windows 10 - Different methods to disable driver signature check and their realations
For Windows 10
I am examining different methods to monitor the disabling of "driver signature check". From a search online I found 3 main method:
from administrator cmd run:
bcdedit.exe -set ...
2
votes
0
answers
766
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
0
answers
495
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, ...
2
votes
1
answer
2k
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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 ...
2
votes
1
answer
210
views
What source document format can be exported to PDF and generate digital signature fields?
My team wants to send out to 3rd parties a contract in PDF format, with digital signature fields that could be signed using Adobe Reader.
Every time we add a new 3rd party to the contract, we are ...
2
votes
0
answers
509
views
Outlook sends mail twice in a row
I have a problem with Outlook 2010. When I try to send a mail with digital signature, Outlook sends the mail twice in a row. Both mails look identical and both have the smime.p7s attachment.
When I ...
1
vote
0
answers
46
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ecryptfs: What would happen if we entered the wrong passphrase and continued like that? Can we prevent encryptfs from accepting a wrong passphrase?
Using ecryptfs, a fine file-system encryption mechanism on Linux.
After the filesystem is setup with ecryptfs (ecryptfs is an overlay of the actual filesystem, like ext4. Files and directories name ...
1
vote
0
answers
360
views
How to resolve Signature Verification Results false positives?
I noticed that there are six DLLs in C:\Windows\System32 that sigverif.exe flags as not having been digitally signed - even though they have been. After digging into it a bit, it looks like the ...
1
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0
answers
266
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How to enable CA_CERTIFICATES on manjaro so that openssl works (xanmod installation error) (solved)
I'm trying to install the XanMod kernel on a Manjaro machine, but receive errors:
$pamac build linux-manjaro-xanmod
...
scripts/sign-file.c:25:10: fatal error: openssl/opensslv.h: No such file or ...
1
vote
0
answers
1k
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OpenSSL Digital Signature with ES256
I am trying to reproduce a valid signature for the JSON Web Token.
I make the privat key with: openssl ecparam -genkey -name prime256v1 -noout -out private.pem
also convert this from Pem to P8 with: ...
1
vote
0
answers
7k
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Prevent losing a digital Signature when a document is saved?
The question
What is an effective work-around to prevent a Digital Signature dropping from a file when it's saved? Or, What would be an efficient way to replicate saving data to a Macro Enabled MS ...
1
vote
0
answers
608
views
Driver installation failed despite test mode
I have test mode enabled. But still, I get the message that the driver couldn't be installed (Code 52).
Context: I'm trying to connect a TI84+ with my Windows 7 PC with an USB cable to transfer files,...
1
vote
0
answers
663
views
Disable installation permission popup for my installer
I built an application and signed it. The update method of the application is to update silently automatically each time there is a new version.
The problem is, I expected that the "Do you want to ...
1
vote
0
answers
59
views
GnuPG --> How do I list only the keys that have my signature
I use my signature to validate a public key.
If someone's public the key is signed by me, then it is considered secure to encrypt and send emails to that recipient.
Is there a command under gpg that ...
1
vote
0
answers
43
views
Mac app becomes smaller when copied to USB
I have a Mac app that is 443,245,675 bytes.
When I copy it to a flash drive, the copied version is only 443,239,527 bytes and the app package becomes invalid (spctl -a fails).
This difference (6148 ...
1
vote
0
answers
264
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
...
1
vote
2
answers
922
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
vote
0
answers
208
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 ...
1
vote
1
answer
876
views
Digital ID for internal communication
We are looking for a simple solution where we can create digital ID of our staff member [3-4] only. And then we install their ID in Outlook and can use to send encrypted and digitally signed Emails.
...
1
vote
1
answer
792
views
Merge multiple digitally signed versions of Word 2010 document
I have a document that I want to be digitally signed by multiple clients, and sent back to me.
Since no client precedes another in rank, ideally I would like to send the document to all clients ...
1
vote
0
answers
328
views
Multiple electoric signatures using Word 2003
Searching for an answer whether Office Word 2003 files can support multiple electronic signatures each resource that i came up with mentions that it can be done on Word 2007+...
Here are but a few ...
1
vote
0
answers
773
views
Why does 64-bit Win7 still warn after having chosen "disable driver signature enforcement"?
I have a test driver that must run on 64-bit Windows 7.
According to MSDN, there are two methods to disable OS to check driver's digital signature:
Method 1. Connect the machine to a debugger, such ...
1
vote
0
answers
83
views
Adobe Pro 9 form not digatally signable in Adobe Reader x
I created a form in Adobe Pro 9 with a digital signature block. When a Adobe Reader X user tries to sign document it does nothing? How do I correct without upgrading to Adobe Pro X?
1
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0
answers
9k
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Install Microsoft Java VM on Windows 7 + IE8
I cannot install Microsoft Java VM on Windows 7 and IE8.
File xmldso.cab is blocked because it does not have valid digital signature to verify its distributor.
Can you use something like group ...
1
vote
1
answer
696
views
Not having to type the passphrase in debsign
I'm building a debian package ( .deb ) with a continuous integration server ( Hudson ).
It's work fine for building unsigned package. But i want my hudson-user to be able to sign the package himself,...
1
vote
1
answer
6k
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"Error encountered while BER decoding" in Adobe Acrobat Pro X when applying timestamp
I have a tedious problem with Acrobat Pro X 10.1.3.23: when I want to apply a timestamp to a document I always get that error.
I have configured VeriSign TSA server http://timestamp.verisign.com/...
0
votes
0
answers
14
views
Create view-only backup and adding digital signature
I need to create a backup of a computer running Windows 10.
Said backup needs to be read-only.
I believe the program EaseUs allows that. If anyone can confirm, I’d appreciate it. I am used to Linux ...
0
votes
1
answer
34
views
Is there a certificate file containing an signature image?
Some PDF editors have this nice feature to sign your document and placing a scanned image of your signature at the same time. Is there any digital signature format out there supporting to contain an ...
0
votes
0
answers
37
views
Managing signed commits as an organization
We are looking to introduce signing of commits into our company.
Currently we are leaning towards using GPG kays, but we can consider SSH if what we want cannot be achieved with GPG.
We are using a ...
0
votes
1
answer
425
views
How can I allow another user to move files around a shared folder in OneDrive?
I have setup a Shared folder on my Onedrive account for my team to facilitate document sign off however after a member of the team signs the document they can not move the document to the next persons ...
0
votes
0
answers
127
views
Verify a digital signed document by fetching public key from local CA at the time of verification
Is it possible for a user (say A) to verify a digitally signed (by user B) document without having public key of user B in local system and fetching key from the server (local CA) at the time of ...
0
votes
0
answers
53
views
Is it bad to use a let's encrypt certificate outside its scope?
I have a let's encrypt certificate issued for my website,
Since I have this certificate's private key, I could use it to sign other stuff like files, etc...
(Assuming I don't leak the private key, of ...
0
votes
0
answers
242
views
How to enable GitHub clone using SSL Certificate?
I am new to GitHub.
Is it possible to clone GitHub private repos using SSL certificate?
Is CLI operations to GitHub & GitHub APIs can be done using SSL certificates?
0
votes
0
answers
1k
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Encryption issues (emails being encrypted for sender, not receiver) in Microsoft Outlook for Microsoft 365 MSO (16.0.13628.20234) 64-bit using S/MIME
I am trying to setup email encryption functionality.
I have created my own CA, 2 PFX certificates, and have signed the PFX certificates with the CA certificate.
The setup on both machines seem to be ...
0
votes
1
answer
1k
views
Libre Office Sign a PDF with PGP key
I'm currently facing an issue with the "Sign" feature of Libre Office. I can digital sign my ODT files without a problem. That means I can select my pgp key in the list of keys and sign the ...
0
votes
1
answer
1k
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Is it possible to download electronically signed document with a signature on it?
I am sorry if this is a wrong place to ask this. If it is, redirect me to the right site.
A document is electronically signed and sent me in .asice file. I managed to open the document via my ...
0
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0
answers
991
views
unknown tag 26 encountered bouncy castle exception
unknown tag 26 encountered
at org.bouncycastle.asn1.ASN1InputStream.buildObject(Unknown Source)
at org.bouncycastle.asn1.ASN1InputStream.readObject(Unknown Source)
at org.bouncycastle.asn1....
0
votes
0
answers
63
views
Understanding an email with no SPF, DKIM, or DMARC but is has a valid digital signature
Can someone explain in simple terms what does it mean, that an email has no SPF, DKIM, or DMARC (from what I read and understood is that this email is likely to end up as as spam or rejected by the ...
0
votes
1
answer
162
views
Combine excel and keep signature line
I'm doing an excel and SharePoint project where I provide user with an excel file with a Microsoft signature line that user review and sign. These are separate files for each user and the files are ...
0
votes
2
answers
83
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Issues understanding CA certificates
I have misconceptions regarding CA (Certificate Authority) certificates. No matter how many things I read, it is still not fully clear.
Let's take an example, Bob accesses a website. In order for ...
0
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0
answers
1k
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This digital signature is invalid and cannot be trusted. The macros will be disabled
I am using MS Excel containing macro at customer place for some automation in excel. When the customer opens excel containing macro with the valid EV digital signature (Also tried with previously ...
0
votes
0
answers
220
views
Permanent accept of java certificate is not woring on windows 10
Usually when starting a signed Java Application - no matter if starting inside a browser as applet or via JNLP/JavaWebStart – there is a warning prompt notifying if to run the application.
On ...
0
votes
1
answer
785
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How to modify a resource in exporer.exe
I've created a notification icon that's much more visible than the existing black and white one. This icon has exactly the same size in bytes as the existing one, so I was hoping I could replace it ...