By SkySigal on
9/8/2008 2:04 PM
 I'm looking for a quick way to memorize the above list of most often used letters in the English language.
One solution proposed was to notice that it also spells Senorita... Except that doesn't give the order...which is essential. My lame attempt doesn't really seem memorable: "Even The Addicts Only Need Rice In Small Helpings." Any suggestions? PS: If they can make POSSLQ memorable, anything is possible :-)
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By SkySigal on
9/8/2008 1:49 PM
Background: A bit is a binary digit, a 0 or a 1. How many different numbers can you make with 2 bits? 00,01,10,11 (answer: 4) How many different numbers can you make with 3 bits? (answer:8) How many different numbers can you make with n bits? 2^n Therefore: How many different keys can you make with 40 bits? (answer: 2^40 ~ 10^12 = 1,000,000,000,000, ie: 1 trillion possible keys) How many different keys can you make with 64 bits? (answer: 2^64 = 10^20 = 100,000,000,000,000,000,000)
Conclusion: Suppose a computer can check 1 billion keys per second: - It could crack a 40-bit key in 1000 seconds. (~20 minutes)
- It could crack a 64-bit key in 10^11 seconds (~100,000 years)
That's why the longer the key, the more difficult to crack.
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By SkySigal on
8/6/2008 7:12 AM
Although usage of the .NET Cryptographic classes does not absolutely require a knowledge of the history of cryptography, knowing their pedigree gives new insight into how they work...
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By SkySigal on
8/6/2008 1:38 AM
 Learn something new every day...
"The cipher proved to be useful not only in espionage but also in literature, inspiring a widely-read work of fiction, The Man in the Moone, by Bishop Godwin (written in 1638). This significant precursor of the English science-fiction genre imagines a race of moon dwellers who communicate by uttering musical phrases.
Examples in the book reveal this lunar "language" to be a version of Porta's cipher.
It appeared at a time when some scholars were seriously considering the idea of music as
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By SkySigal on
7/30/2008 1:06 AM
 I’ve been working with cryptology of late, and I was trying to explain alphabets, and letters/characters/charsets…
and in the middle of my explanation I realized that even the characters used in out alphabet are not to be taken for granted…
Here’s the story of the little ‘a’.
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By SkySigal on
7/26/2008 2:38 AM
One part of Cryptography is the subject of generating unique hashes, for which there are many uses. Hashes – What are they exactly? In cryptography, a cryptographic hash function is a transformation that takes an input and returns a fixed-size string, which is called the hash value Src: Wikipedia
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By SkySigal on
7/26/2008 12:41 AM
 I’ve been looking at several posts (I started searching from this position) on MD5 (I’m currently going over some Cryptographic Hash algorythm stuff) and found several hot arguments about why getting the same results as PHP on a net plaform is difficult -- but no clear answer as to what Encoding does work in the end…
So I put together a test to sort out the the answer…
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