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| [[File:Encrypton1.jpg|thumb|Cryptography in a nutshell.]] | | Merging with [[encryption|encryption]] |
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| Cryptography is the art of hiding information or making it undecipherable. Cryptography is closely related to Mathematics and knowledge of if is needed in order to fully understand the concept. If has many uses and knowing how to use it is a valuable tool for protecting your information from prying eyes.
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| ==Uses==
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| Cryptography has a wide variety of uses ranging from hiding your information to becoming a l33t h4x0r. A hard drive can be encrypted to make your data unreadable to anyone except yourself and it can only be decrypted by a key. Keep in mind that simply encrypting your drive will NOT hide it from the FBI, and if you want to do that, you will need to know your shit. In the event that your computer is stolen, the criminal would not be able to view your information.
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| Cryptography is commonly used by:
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| * The FBI
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| * Pedophiles
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| * l33t h4x0rz
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| * Websites
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| * Programmers
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| Normal people may use cryptography to protect their information as it being stolen may cost them money or their privacy. Website and Programmers use cryptography to make your connections to the site private as well as your password on the server.
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| ==Hashes==
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| I will be using a SHA256 hash to give you an example of how a website protects your password.
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| 1. <b>You enter your password for the first time</b>
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| Password:MyPass12345
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| It is then encrypted with the hash
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| MyPass12345 -> SHA256 = 586aaf7596c3243791db15014f3da02fa8d7e4f67c2daa51d003cff572d02607
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| Once this is done, it cannot be reversed
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| 2. <b>The server stores your password as the hash</b>
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| A hash guarantees that if the database is breached, your password will still be safe and you will not have to worry.
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| When you re-enter your password, it will re-hash it and compare it to your original password.
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| FakePass1 -> SHA256 = 582796d178a656691b74031f7a9564bacbaf716a2a2009f69341c289079d1287
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| Comparing the hash = 586aaf7596c3243791db15014f3da02fa8d7e4f67c2daa51d003cff572d02607
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| <b>NOT THE SAME</b>
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| MyPass12345 -> SHA256 = 586aaf7596c3243791db15014f3da02fa8d7e4f67c2daa51d003cff572d02607
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| Comparing the hash = 586aaf7596c3243791db15014f3da02fa8d7e4f67c2daa51d003cff572d02607
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| <b>THEY ARE THE SAME</b>
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| ==Steganography==
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| Steganography is hiding information within an image by changing only a few pixels to make the image look the same.
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| ==Ciphers==
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| Ciphers are set and change letters to another preset. These are extremely easy to crack and aren't recommended.
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| ==ROT==
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| ROT is basically moving every letter up once.
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| ABCDEFG -> ROT1 -> BCDEFGH
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| <b>This page is not done, so do not touch it</b>
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