Recover encrypted ecryptfs home folder from encrypted dm-crypt luks disk volume

Whew… saved by the skin of teeth.

The grub2 bootloader of my computer got corrupt. I was not able to boot into the computer and all was lost. For security reasons, I set up LVM with full disk encryption. Thereafter, each user’s home folder was further encrypted with ecryptfs (the default you get when you . . . → Read More: Recover encrypted ecryptfs home folder from encrypted dm-crypt luks disk volume

How to restore TWRP recovery after encrypting internal storage on LineageOS 14.1 on Motorola G 2014 (titan)

I installed LineageOS 14.1 on an old Motorola G 2nd Generation (2014) android phone, also known as titan. All went well and it worked like a charm.

I wanted to encrypt the internal storage and accordingly, did so from the Settings -> Security option on the phone. It worked well and said the phone was . . . → Read More: How to restore TWRP recovery after encrypting internal storage on LineageOS 14.1 on Motorola G 2014 (titan)

How to mitigate the threat of being a victim of ransom ware

Ransom ware seems to have gotten the better of many ordinary users. However, it is not a threat that has no mitigation measures available to the ordinary user, but is more of following good basic security and hygiene practices, to not fall prey to a ransom ware threat. Do the following:

If you use Linux, . . . → Read More: How to mitigate the threat of being a victim of ransom ware

Cannot connect to OpenWRT router using SSH after OpenWRT firmware upgrade

OpenWRT is a very powerful router firmware. Since I wanted to upgrade the router firmware, I took a backup of the configuration and then did a complete erase of the configuration settings at the time of firmware upgrade. After logging in, and setting up SSH as a means to log in to the router, SSH . . . → Read More: Cannot connect to OpenWRT router using SSH after OpenWRT firmware upgrade

How to extend expiry date of Gnu Privacy Guard Keys (GPG/PGP) keys

When PGP/GPG keys expire, you have option to generate a sub key (if you think your key has been compromised), or you can extend the validity of the current key by extending it’s expiry period. You can extend the key’s expiry period since the keys are not compromised. To continue, Open a terminal window and . . . → Read More: How to extend expiry date of Gnu Privacy Guard Keys (GPG/PGP) keys

How to encrypt swap partition on Ubuntu 14.04 LTS

If you installed Ubuntu 14.04 afresh, and selected home folder encryption, you will also get an encrypted swap partition. However, when the computer boots, you get the following error message: the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present.

Note that you need to have a proper data backup and make sure . . . → Read More: How to encrypt swap partition on Ubuntu 14.04 LTS

How to setup HTTPS for web interface in OpenWRT

By default, you can log in to the OpenWRT firmware installed on your router using http://192.168.1.1. However, if you want to add encryption on that connection, you need to be able to login using https://192.168.1.1. To do that, you need to enable HTTPS support on the router. To do so, open a terminal window on . . . → Read More: How to setup HTTPS for web interface in OpenWRT

How to install telegram pidgin plugin in Ubuntu Linux

Telegram is an application for Android phones just like WhatsApp. The key advantages of Telegram are that it assures users that their data is not used by any 3rd party, users have more control over it, with the ability to send secret messages, self-destruct messages and complete removal if a user exits the service.

If . . . → Read More: How to install telegram pidgin plugin in Ubuntu Linux

How to use GNU Privacy Guard / GnuPG / GPG / PGP to encrypt email and data

Okay… on this blog, we explained the finer details of GNU Privacy Guard or GPG or GnuPG or PGP. Activities that are required to be performed were explained in detail with the commands to perform them.

However, you would still not be able to connect the dots, without this grand overview of GNU Privacy Guard . . . → Read More: How to use GNU Privacy Guard / GnuPG / GPG / PGP to encrypt email and data

How to revoke a GnuPG / GPG key in Linux

If your Gnu Privacy Guard or GPG or GnuPG key has been compromised or something has gone wrong, you can revoke your key. Make sure that you generated a revocation certificate and stored in a safe place to do so.

To revoke a key, open a terminal in Linux, and enter the following command: $ . . . → Read More: How to revoke a GnuPG / GPG key in Linux

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