cryptography & cryptanalysis

[VirtLands]

Hi, I recently found this,...

For anyone that would love to find out about the complex math behind cryptography,

CrypTool 2.0 is a free ( learning tool ) program that teaches you all about it.

http://www.cryptool.org/en/

[sample screenshot of RSA encryption method]


Cryptool covers every topic including, 15 classic Ciphers, 22 modern Ciphers, and lots of hash.

+ Classic Ciphers
+ Modern Ciphers
+ Steganography
+ Hash { a dish of diced or chopped meat and vegetables }
+ Cryptanalysis { is where you try to decipher others' secret codes, find the passkeys }

The CrypTool 2 program is self-updating, so, let it update, and then restart the software.
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Cryptool-ONLINE, shows about 30 classic ciphers:

http://www.cryptool-online.org/index.php?Itemid=29
http://www.cryptool-online.org/
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Mystery Twister C3 : Contest
https://www.mysterytwisterc3.org/en/ :

Have fun.

[Muzozavr]

Always found cryptography interesting, but was never a fan of solving anything more complex than a Caesar cipher. Seriously, I can't even solve a regular substitution cipher with pen and paper. I know the whole "probability" trick, but could never actually do it. Your links, however, might change that.

[VirtLands]

Always found cryptography interesting, but was never a fan of solving anything more complex than a Caesar cipher. Seriously, I can't even solve a regular substitution cipher with pen and paper. I know the whole "probability" trick, but could never actually do it. Your links, however, might change that.

I can't solve a substitution cipher either.

I think that with practice, a person can invent a brand new cipher algorithm, beyond those already known.

When I have time, I'll read more into it.

[Muzozavr]

Always found cryptography interesting, but was never a fan of solving anything more complex than a Caesar cipher. Seriously, I can't even solve a regular substitution cipher with pen and paper. I know the whole "probability" trick, but could never actually do it. Your links, however, might change that.

I can't solve a substitution cipher either.

I think that with practice, a person can invent a brand new cipher algorithm, beyond those already known.

When I have time, I'll read more into it.

It's incredibly easy to invent a cipher. It is extremely hard, however, to invent a cipher that's actually secure.

BTW - I can't register at the contest, the ReCaptcha doesn't show up. Oh well.

[VirtLands]

You may also like the following:

OpenPuff: { steganography }
http://embeddedsw.net/OpenPuff_Steganography_Home.html

TrueCrypt { encryption }
http://www.truecrypt.org/

KGB Archiver
{ Compression program,
compresses files even more than other programs, the downside is that it is quite slow. }
http://www.softpedia.com/get/Compressio ... iver.shtml

FastPack { EXE packer }
http://www.softpedia.com/get/Compressio ... k-32.shtml


UPX-it 1.6.2 { EXE packer , requires administrator mode }
http://www.softpedia.com/get/Programmin ... PXiT.shtml

UPX 3.09 { another EXE packer }
http://upx.sourceforge.net/