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# Codes And Ciphers

Asymmetric Keys Explained
Asymmetric keys or ciphers work differently to symmetric keys. Here, a different key is used to encrypt the data as is used to decrypt. The one used to...

Codes, Ciphers And Steganography
Codes and ciphers do not try to disguise the actually encoded message. This contrasts with steganography, which is actually the process of hiding some sort...

How Hieroglyphs Were Deciphered
Hieroglyphs were an interesting example of decryption and cracking an ancient code to reveal the secrets and tales it tells and enabled us to further our...

How Quantum Physics Could Help Decipher A Code
There are two interesting consequences of applying quantum physics to codes: First of all, the majority of existing codes could all be broken (apart from...

How RSA Encryption Works
RSA is a type of encryption known as public key encryption. That is anyone can access the specific public key and therefore encrypt. But the key is that the...

How To Break A Secret Code
Perhaps not something that most of us will need to do except for fun, but particularly in the last few centuries, codes were crucial to secret...

How To Create An Unbreakable Cipher Code
The best and easiest way to make an unbreakable cipher - strictly rather than a code, that is a letter substitution rather than a word substitution, is to use...

How To Make A Substitution Cipher Harder To Solve
If you have a standard substitution cipher of a reasonable length it can usually be solved through frequency analysis. Therefore this presents a couple of...

How To Work Out The Factors Of A Large Prime At Speed
As usual the answer to working out the factors of a large prime number requires a leap of faith. We all know that the strongest point of a method is the place...

Keyword Puzzles: Tips On Solving
Keyword puzzles are known under various names such as codewords, codecracker and so on. They are essentially a puzzle that contains each letter substituted...

Letter Frequencies In English
It is always useful to know how frequent letters are in English. This can help with solving codes or getting a foothold into Codeword puzzles, for...

One Way Functions
A one way function is one that cannot be reversed. This contrasts with a two way or reversible function. For instance, addition is a one way function if I...

Quantum Mechanics And Cryptography: A Truly Unbreakable Cipher
One of the interesting elements about quantum theory is that its whackiness and counter intuitive results coupled with the way that it works in explaining so...

Symmetric Keys Explained
A symmetric key or cipher is when the one key is used to encipher and to decipher a code. Thus if you have the cipher FLIBBLE having used the WARDDAS to...

The Difference Between A Code And A Cipher
As alluded to in some of the other items in this section, there are differences between a code and a cipher. A cipher is a lower level substitution that...

The Historical Importance Of Codes And Ciphers
Codes and ciphers whilst for most of us the domain of a bit of fun and a challenge, are actually incredibly important. It is no exaggeration to say that the...

The Key Distribution Problem
The key distribution problem is something that seems to create an insoluble chicken and egg situation. In order to secure a communication, we need to agree...

Vigenere Cipher Explained
Historically many ciphers have existed, for instance the specific Caesar shift cipher, the standard monosubstitution cipher and ciphers containing...

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