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This post is a part of a post chain started by a colleague and a friend of mine – Ido Schacham. The purpose is to share our favorite development tools.
The rules are simple:
Copy-paste the rules. List your favorite tools, libraries, and services for web development. List obvious ones as well, they [...]
One of the problems of hash functions is collisions, they cause some security vulnerabilities which won’t be discussed in this article.
In this article I would like to find some approximations concerning collisions.
Probability for a collision
Let \(\mathbf{M}\) be the size of the range (i.e. for md5 it is \(2^{128}\) since md5 returns 128 [...]
Yesterday I have published an article about password entropy.
Today I would like to discuss the entropy of a phrase based password.
Phrase Based Password
A phrase based password is a password assembled from several easy to remember and spell words, delimited by spaces.
As a result, such passwords are very [...]
A common and easy way to estimate the strength of a password is its entropy.
The entropy is given by \(H = L \log_2{N}\) where \(L\) is the length of the password and \(N\) is the size of the alphabet, and it is usually measured in bits.
The entropy measures the number of [...]
Hi there, and Welcome!
This is my first post in my fresh new blog.
My name is Shay Ben Moshe, and I am a web developer from Israel.
I develop for the server side as well as for the client side.
In this blog I will try to enrich you with [...]
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