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Sunday, November 27, 2016

How to secure files in your PC - ccrypt

Many students and teachers are still unaware that files on one's computer are not secure! Even though you save it on an extra hard disk, it’s still not safe. Some teachers still use the email program to discuss exams and other sensitive material!

Today we’re providing a very small program which can lock files from intruders! One can set his mind at rest that if the worst happens (eg laptop is stolen or pc is hacked), one cannot read his files! They are still secure.

Ccrypt is a utility for encrypting and decrypting files and streams. It was designed as a replacement for the standard unix crypt utility, which is notorious for using a very weak encryption algorithm. ccrypt is based on the Rijndael block cipher, a version of which is also used in the Advanced Encryption Standard (AES, see This cipher is believed to provide very strong security.

The program could be used in windows, mac, solaris, android, linux, FreeBSD etc….If one needs help for installation and/or use of program, one can visit several sites down below:

Video tutorials:

Sunday, November 13, 2016

Writing a DVD (video)

Some of our students learn faster when the lesson is presented in a video form! Others prefer the video format in order to present their studies/presentations. The American idea of a flipped class is all based on video based lessons. This gives the opportunity to teachers to present content in a personal way. Student would love to listen to their teacher’s voice rather than a strange and unknown one.

Today we’re presenting Open DVD producer. One can edit and generate DVDs on any platform: Ubuntu (linux), Mac or Windows. The main functions of the DVD specification are implemented in the software. For example, one can create a DVD in any supported format, with various menus, with directional buttons, videos with chapters and set sections of videos to play.

There is no need to use some external converter. Open DVD Producer is able to convert from any kind of known video format.

Want to play at some point in the video? No problem, you can set chapter marks directly on the timeline, and also set segmented pieces of video.

If one needs to download the program, here is the link: DVD. There is another link. If one needs help about installation, here’s how to install it.