How to verify a digital signature on a PDF on Linux?
I am a Linux desktop user.Someone sends me a PDF file which is digitally signed. It is supposed to be signed using some kind of government / regulated body / official institution issued certificate.Is...
View ArticleIs 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...
View ArticleCreate 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 and...
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How to delete signature from a PDF
This PDF has an invalid signature, so I want to delete it. Is there some tools to do it? I use Windows/Linux system.PDF source: https://zh.z-library.se/book/3355492/93d409/classical-mechanics.html
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Error running installer in Windows 7 VM: "publisher of file [xxx] cannot be...
For various reasons, I need to install a third-party program on a Windows 7 VM running under Parallels Desktop 18 on a MacBook Pro running OS 12.6.1.The problem appears when I try to run the downloaded...
View ArticleAdding Multiple Digital Signature Fields in Adobe
I have a pdf multiple people need to digitally sign. I would like to "pre add" the signature fields to the pdf so that all the signature boxes are the same size and in the right place. Then when I send...
View Articlegpg: skipped "12345689": Unusable secret key / how to use signing subkey for...
As you see, I have a key with id 12345689, and I'm trying to sign with it in gitgpg -k/home/lz/.gnupg/pubring.kbx---------------------------pub rsa4096 2020-03-02 [C] 12345689uid [ unknown] Person...
View ArticleHow to fake handwriting on pdf without printer and scanner?
Bureaucracy sometimes requires us to print a document,fill in blank fields, sign it, scan it and send it back. Is there an easy way to fool the bureaucratswhen no printer or scanner are available? I...
View ArticleDelete 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 remove...
View ArticleUse an unsigned driver in Windows 7 x64
I'm trying to use the RBC9 SpaceNavigator TEST x64 build drivers for my SpaceNavigator 3d joystick so that it can work as a normal joystick in games like Quake.Unfortunately, I get the error "This...
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How to import a PNG signature into Adobe Acrobat Reader?
I've been trying to import my signature stored as a .png file into Adobe Acrobat Reader to sign PDF documents, but I can't find the "Add Signature" option. I've looked under "Fill & Sign" and even...
View ArticleError signing email with eID certificate using Outlook365
When I try to sign an email using Outlook365, I get an error message stating there is no email address associated with the certificate present on the eID smartcard (note: I can use my eID to sign Word...
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Adding a background image for signature Okular
I'd like to add an image to my signature. I've generated a certificate using Open-SSL, and it works. However, the signature in Okular repeats the name when I'd expect to be able to put my handwritten...
View ArticleInstall trusted certificate to verify PDF signature with pdfsig
I'm trying to use the pdfsig utility from Poppler to verify the signature of a certain PDF file. When I use it, it displays (some irrelevant info redacted):Digital Signature Info of:...
View ArticleSigning EXE with both SHA256 and SHA384 (and SHA1 ?) nowadays recommended?
My old build script has been saving multiple SHAs without problems for years.Nowadays, when the cert is located on USB TOKEN, the signtool does not seem to store multiple SHAs on EXEs, even when these...
View ArticleStrip signatures from PDFs without increasing the file size, on Linux
I have multiple digitally signed PDF payslips from my ex employer, and I want to merge them together into one. I don't care about the signatures: either retaining them or signing the merged...
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Remove trust from built app package file once added to windows trusted app
I created package of an app I developed. When running the built app it was blocked by windows. So I checked the Unblock from the properties as show in the below image.But Now I want to remove it from...
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Acrobat: transfer 'sign yourself' signature between laptops
Adobe Acrobat has a 'sign yourself' function that allows the use of signatures and initials:How do I transfer my 'sign yourself' signature from the old laptop to the new one?I'm in the process of...
View ArticleDoes there exist a UEFI-enabled boot time virus scanner that runs before...
I accidentally left my virus protection off for a day, and executed a program that was later scanned as a trojan virus.Because of how rootkits work, I now don't believe anything after the signed UEFI...
View ArticleHow do I sign a file using SSH and verify it using a certificate authority?
I would like to give a selected number of developers ability to run code on a system, and verify it using OpenSSH's -Y verify feature.# Generate the certificates, and sign the dev cert with the root...
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