CertViewer [DotNET security utility]

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Grünkohlkönig
Posts: 12
Joined: Thu Feb 16, 2023 8:00 am

CertViewer [DotNET security utility]

#1 Post by Grünkohlkönig »

A simple X.509 certificate viewer for Microsoft Windows.

Desciption:
In order to display an X.509 certificate, simply drop a certificate file in the binary (DER) or the Base64-encoded (PEM) format onto the CertViewer window. Alternatively, you can copy a certificate in the PEM format to the clipboard. Last but not least, it is also possible to pass a certificate file to CertViewer via command-line parameter.

Note: By default, CertViewer continuously monitors the clipboard for "viewable" certificates in the PEM format.
Web-site:
https://deajl3ka.github.io/certviewer/

Screenshots:
https://github.com/dEajL3kA/certviewer/ ... ewer_1.png
https://github.com/dEajL3kA/certviewer/ ... ewer_2.png
https://github.com/dEajL3kA/certviewer/ ... ewer_3.png
https://github.com/dEajL3kA/certviewer/ ... ewer_4.png
https://github.com/dEajL3kA/certviewer/ ... ewer_5.png
https://github.com/dEajL3kA/certviewer/ ... ewer_6.png
https://github.com/dEajL3kA/certviewer/ ... ewer_7.png
https://github.com/dEajL3kA/certviewer/ ... ewer_8.png
https://github.com/dEajL3kA/certviewer/ ... ewer_9.png

Download page:
https://github.com/dEajL3kA/certviewer/releases
https://gitlab.com/deajl3ka1/CertViewer/-/releases

Mirror:
https://archive.org/download/cert-viewer.v1-2-7
https://www.dropbox.com/sh/a7jhq1iwuwjx ... tibta?dl=0

Prerequisites:
.NET Framework 4.7.2 or later is required. Already included in Windows 10 v1803 (April 2018 Update) or later, and all versions of Windows 11.

License:
OpenSource (MIT License)
Last edited by Grünkohlkönig on Wed Feb 14, 2024 5:01 am, edited 19 times in total.

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webfork
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Re: CertViewer

#2 Post by webfork »

Thanks for the submission and welcome to the site :)

Note that this requires .NET Framework 4.7.2 or above, which may affect portability for some.

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Grünkohlkönig
Posts: 12
Joined: Thu Feb 16, 2023 8:00 am

CertViewer v1.1.0

#3 Post by Grünkohlkönig »

Small update:
  • Updated Bouncy Castle Cryptography Library to version 2.1.1
  • Using Costura.Fody to create a self-contained EXE file
  • Implemented a separate tab to show the certificate extensions
  • Various improvements
Last edited by Grünkohlkönig on Mon Feb 27, 2023 7:46 am, edited 2 times in total.

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Grünkohlkönig
Posts: 12
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CertViewer 1.2.0

#4 Post by Grünkohlkönig »

Update:
  • Support for "Certificate Policies" extension has been implemented
  • Detailed view of certificate *public key* and *signature* has been implemented
  • Much improved clipboard monitoring code
  • Workaround to enable support for certificates with very large RSA key
  • Various improvements
Download:
https://github.com/dEajL3kA/certviewer/ ... /tag/1.2.0
https://gitlab.com/deajl3ka1/CertViewer ... ases/1.2.0
Last edited by Grünkohlkönig on Wed Mar 01, 2023 8:58 am, edited 2 times in total.

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Grünkohlkönig
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CertViewer 1.2.1

#5 Post by Grünkohlkönig »

Another small update:
  • Added "ASN.1 Outline" and "PEM Data" to the detail view for public keys and extensions
  • Various improvements
Download:
https://github.com/dEajL3kA/certviewer/ ... /tag/1.2.1
https://gitlab.com/deajl3ka1/CertViewer ... ases/1.2.1

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Grünkohlkönig
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CertViewer 1.2.2

#6 Post by Grünkohlkönig »

Another small update:
  • Added support for reading PKCS#12 (PFX) files
  • Added option to control whether DNs should be displayed in "reverse" order (as per RFC 2253)
  • Various improvements
Download:
https://github.com/dEajL3kA/certviewer/ ... /tag/1.2.2
https://gitlab.com/deajl3ka1/CertViewer ... ases/1.2.2

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Midas
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Re: CertViewer

#7 Post by Midas »

Thank you for keeping TPFC updated. 8)

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Grünkohlkönig
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Joined: Thu Feb 16, 2023 8:00 am

CertViewer v1.2.3

#8 Post by Grünkohlkönig »

Another small update:
  • Added support for reading JKS (Java KeyStore) files
  • Improved support for key-store files containing multiple certificates
  • Various improvements
Download:
https://github.com/dEajL3kA/certviewer/ ... /tag/1.2.3
https://gitlab.com/deajl3ka1/CertViewer ... ases/1.2.3

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Grünkohlkönig
Posts: 12
Joined: Thu Feb 16, 2023 8:00 am

CertViewer 1.2.4

#9 Post by Grünkohlkönig »

Another small update:
  • Improved detection of possible PKCS#12 and JKS files
  • Improved password dialog
  • Added configuration option to specify the maximum file size
  • Various improvements
Download:
https://github.com/dEajL3kA/certviewer/ ... /tag/1.2.4
https://gitlab.com/deajl3ka1/CertViewer ... ases/1.2.4

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Grünkohlkönig
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Re: CertViewer 1.2.5

#10 Post by Grünkohlkönig »

Another small update:
  • Updated Bouncy Castle Cryptography library to version 2.2.0
  • Removed workaround for Bouncy Castle forcefully closing the "wrapped" stream
  • Added button to open a new instance to the tab bar
  • Various improvements
Download:
https://github.com/dEajL3kA/certviewer/ ... /tag/1.2.5
https://gitlab.com/deajl3ka1/CertViewer ... ases/1.2.5

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Grünkohlkönig
Posts: 12
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Re: CertViewer 1.2.6

#11 Post by Grünkohlkönig »

Maintenance update:
  • Updated Bouncy Castle Cryptography library to version 2.2.1 (Changelog)
Download:
https://github.com/dEajL3kA/certviewer/ ... /tag/1.2.6
https://gitlab.com/deajl3ka1/CertViewer ... ases/1.2.6

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Grünkohlkönig
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Joined: Thu Feb 16, 2023 8:00 am

Re: CertViewer 1.2.7

#12 Post by Grünkohlkönig »

Last edited by Grünkohlkönig on Wed Feb 14, 2024 4:59 am, edited 2 times in total.

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Midas
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Re: CertViewer [DotNET security utility]

#13 Post by Midas »

Topic update (for completeness sake): CertViewer v1.2.7 released (changes and downloads at https://github.com/dEajL3kA/certviewer/releases)...
CertViewer: A simple X.509 certificate viewer for Microsoft Windows.
Pre-requisites: The .NET Framework 4.7.2 or later is required!
It is already included in Windows 10 v1803 (April 2018 Update) or later, and all versions of Windows 11.

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