Fantastic video explaining Diffie-Hallman key exchange alogrithm used in asymetric gyptography in a simple way.
Thanks to Khan academy for yet another lessions.
This video explain the RSA algorithme https://www.youtube.com/watch?v=Z8M2BTscoD4
And her you find an example where the Euler Totient function is calculated in an other way https://www.youtube.com/watch?v=kYasb426Yjk
For sysetric encryption I find this video wery good https://www.youtube.com/watch?v=jKkZ9-Ij6Hs
Here i list the help pages for the syntax or functionality in c# I have problems to remember, topic I have to google again and again.
- String formater, Standard Numeric Format Strings
- Lambda expressions, the “( x => (int)x * (int)x, number)” principle
I have know made my first investment in Bitcoin and look forward to be millionaire in this new marked 🙂
My Bitcoin ID:
Blockchain is the new buzzword, and can be a major step in a higher security in the digital World.
Ethereum seem to be a easy to start place for developping and testing blockchain
Blockchain for dummies
And a illustrativ demo https://anders.com/blockchain/ with source code at github
An introduction in Danish you can find at http://www.danskbitcoinforening.dk/
Here is two guides to make and test an private blockchain
I have found this webiste, where you can get a very good understanding af depth of field in an interactively way. On this site you can calculates the camera depth of field and background blur and visually simulates it on a photo together with different types of lens blur (bokeh) for any lens, camera and distance combination.
It is a challenge to take good and appetizing pictures of food. I find Michael Rays website very interesting with a lot of good advice and ideas. I tried his advise in this article http://foodportfolio.com/two-biggest-food-photography-lighting-mistakes/ and got this result – In my opinion not bad in 10 minute and without any post processing 🙂
My fresh bread rolls
My photo setup
And my camaer setup
Most or all mine DSLR camera put in shutter count in picture data. On those site you can eg. get the shutter count
https://www.camerashuttercount.com/ here you only get the shutter count.
http://shuttercounter.com/ here you get a lot of information from picture info
Nikon serial number database http://www.photosynthesis.co.nz/nikon/camera.html, look up to see where your camera or lens where intent to be sold
Made my first examples using AFroge.NET. Examples include capturing image and video from internal and external webcams (D-Link 932-LB).
In my reading I find this free Surveillance Software from iSpy. se more at https://www.ispyconnect.com/default.aspx