x509 gui certificate viewer

We have hosted the application x509 gui certificate viewer in order to run this application in our online workstations with Wine or directly.

Quick description about x509 gui certificate viewer:

Features:

• X509 viewer tool for Windows and Linux Mono . Displays Offline and Online certificates with the associated CRL and/or OCSP data.
• Offline : drag/drop certificate files to show content. All files formats are accepted. Also works with PEM encoded certificate from clipboard.
• Online : paste the URL to download and show content . TLS (https, wss), DTLS, OPC UA, QUIC and SMTP StartTLS protocols are supported.
• Click on the CRL link to download and view it. Allows to save it to a file.
• Click on the OCSP link to check the revocation status. Shows if signature is delegated.
• Certificate validation done with the Windows/Linux Store and with a private PKI.
• True validation of Signatures in the Signed Certificate Timestamp List
• Can be used to extract a certificate from an existing OPC/TLS/DTLS/QUIC/SMTP server with one click.
• Can be used as a format converter tool : .pfx, .der (binary), .crt/.pem (base64) to .der or .crt/.pem
• Can check (unencrypted) Private key file pairing with the current certificate. A simple drop of the file with the key is enough.
• Essential for teaching and verification of OPC/TLS/DTLS/QUIC/SMTP secure servers.

User interface: .NET/Mono.
Programming Language: C#.
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