Questions tagged [digital-signature]

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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 ...
Rafaelo's user avatar
  • 141
4 votes
1 answer
3k 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 ...
Lakey's user avatar
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3 votes
0 answers
1k views

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/...
David S.'s user avatar
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3 votes
0 answers
286 views

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 ...
Erik's user avatar
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3 votes
1 answer
2k views

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 ...
Blisk's user avatar
  • 764
2 votes
0 answers
25 views

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 ...
kodomination's user avatar
2 votes
0 answers
88 views

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) ...
NovHak's user avatar
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2 votes
0 answers
3k views

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 ...
Anton.P's user avatar
  • 255
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 ...
ChaseLouisPowers's user avatar
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, ...
Daniel Ziltener's user avatar
2 votes
1 answer
2k 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 ...
prime8's user avatar
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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 ...
Dan Dascalescu's user avatar
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 ...
AndrejaKo's user avatar
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1 vote
0 answers
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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 ...
Déjà vu's user avatar
  • 675
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 ...
Kyle K's user avatar
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1 vote
0 answers
266 views

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 ...
jane_xxx's user avatar
1 vote
0 answers
1k views

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: ...
Fateh Aslam's user avatar
1 vote
0 answers
7k views

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 ...
Samuel Everson's user avatar
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,...
Fabian Röling's user avatar
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 ...
Alexandru Irimiea's user avatar
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 ...
Vivarto's user avatar
  • 305
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 ...
corpico's user avatar
  • 111
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 ...
Chloe's user avatar
  • 5,946
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 ...
Zaid Malhis's user avatar
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 ...
user1113827's user avatar
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. ...
Sumit Gupta's user avatar
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 ...
Matt's user avatar
  • 165
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 ...
DeemV's user avatar
  • 111
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 ...
xmllmx's user avatar
  • 444
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?
Renee's user avatar
  • 19
1 vote
0 answers
9k views

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 ...
Mickey's user avatar
  • 109
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,...
Antoine Claval's user avatar
1 vote
1 answer
6k views

"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/...
usr-local-ΕΨΗΕΛΩΝ's user avatar
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 ...
regina_fallangi's user avatar
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 ...
Christoph Grimmer's user avatar
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 ...
user avatar
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 ...
Moe's user avatar
  • 1
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 ...
Patt's user avatar
  • 11
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 ...
Ale Morales's user avatar
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?
rgh's user avatar
  • 1
0 votes
0 answers
1k views

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 ...
CoopDaddio's user avatar
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 ...
White's user avatar
  • 111
0 votes
1 answer
1k views

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 ...
user's user avatar
  • 101
0 votes
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....
Onkar Narkar's user avatar
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 ...
Huud Rych's user avatar
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 ...
user1003457's user avatar
0 votes
2 answers
83 views

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 ...
Engineer999's user avatar
0 votes
0 answers
1k views

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 ...
IT researcher's user avatar
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 ...
PaulEdison's user avatar
0 votes
1 answer
785 views

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 ...
Luis Ferrao's user avatar
  • 4,345