Linux: Get SSL Certificate Expiration Date
Explains how to get the expiration date of a SSL certificate for a domain on Linux from the command line using openssl.
Tag Archives: openssl
Linux: Get Subject Alternative Name (SAN) from SSL Certificate
Explains how to print the Subject Alternative Name (SAN) field from a SSL certificate on a server or from a certificate file using openssl.
Unix / Linux: Remove Passphrase from SSL Private Key
Objective: Remove passphrase from a SSL private key.
Decode PEM Encoded SSL Certificate
Objective: Decode a PAM encoded SSL certificate and verify that it contains the correct information.
How to Decrypt WhatsApp crypt8 Database Messages
WhatsApp backup conversation files are now saved with the .crypt8 extension. This means that WhatsApp has once again changed (do they ever stop??!!) the encryption algorithm used to generate the chat history message backups that are saved on the SD card.
How to Decrypt WhatsApp crypt7 Database Messages
WhatsApp has once again changed the algorithm to encrypt all the chat history messages saved on the SD card. This new encryption method is denoted by the .crypt7 filename extension.
Offline Heartbleed Vulnerability Scanner Tools
Numerous online Heartbleed vulnerability scanners have popped up recently. These sites claim that they are able to identify websites that are vulnerable to the OpenSSL Heartbleed bug. So what happens if one of the Heartbleed scanning websites concludes that your site is vulnerable? It means that the owners of the scanner websites know that sensitive data can be retrieved from your site by exploiting the Heartbleed bug.
How to Decrypt WhatsApp crypt5 Database Messages
A couple of weeks back, WhatsApp introduced a new way of encrypting the backup messages saved on the SD card. The article that I wrote last month on decrypting the WhatsApp messages will no longer work on the new crypt5 files.
How to Decrypt WhatsApp Database Messages
WhatsApp does a backup of the messages at 4am (local time) every day to the SD card. On Android, this backup is an encrypted copy of the SQLite database containing all of the WhatsApp messages. If you want to read the messages on a computer, you will need to decrypt the file.
