Collatz encoding method with wide format characters.
- Param-- std-c99.
- NDEBUG is undefined in relase mode for assertions.
- Author AMARDJIA Amine
- Date 02/04/2017
Originally based on Caesar's encryption, but instead of having a key 'D' with fixed offset. Encryption by this method use a variable C key offset witch is depending of the previous C value.
The values of C are determined by collatz's sequence. Aka: syracuse conjecture (Cf. see the wiki) The starting value given to the sequence, is the secret encryption and decryption Key.
* NB: We take the table of the extended ascii.
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Example:
C = 15 -> is the start offset value. The sequence C = 15 -> 46 -> 23 -> 70 -> 35 ... etc. Are the offset values for each char.
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Clear -> Atbash encryption:
Gsrh rh z hrnkov gvhg uli Xloozga hvjfvmxv xibkgl nvgslwv xlnyrmvw drgs zgyzhs nvgslwv FKKVI GVHGV WLMV zmw mld mfnyvih 9876543210 zmw hlnv hkvxrzo xszih : ?!;,<>²&éè'()-_- ç ~ ^ @[]{}+-*/.= % µ *@^ zmw mld ivk : 8888888888888888888888888888888888888888888888888888 9999999999999999999999999999999999999999999 -
Atbash -> Collatz encryption with (207) non-printable characters:
ëÅ�=�ëÕiW•©�;°@Ç���‰ªéÔ{v7�-°4§Îˆ…y©óó!le=S�öëèÀYå±1v ÓžÛAËGíè±,¡èUãñÆ’]3p„{k\ÉmsN�9¼'�Û½¢2éäóį5�©��=��ÅMäÎ��Y��6Ÿ�^�D矸·–U‚�ìa®‰�q2´·1µ+«ŸÇz“¯ =¦ÅKÚ¡ÎyC“��„F-�å›ÏÈuºÓ�Ê:œOv¹=;¯ó½Ôº”Èü„�ÂÙ"Í01ÈYÅ�«ÑÃ:Ì!`5½�@ùæƒe�]—GE?='���¹�IKqû£kÑå3 ‰�ÅÁµ¡uß�±…!ÑõsÉÍé?-�“KqÓûe¯�õœdš>HV€ -
Collatz encryption -> Clear (original message):
This is a simple test for Collatz sequence crypto methode combined with atbash methode UPPER TESTE DONE and now numbers 0123456789 and some special chars : ?!;,<>²&éè'()-_- ç ~ ^ @[]{}+-*/.= % µ *@^ and now rep : 1111111111111111111111111111111111111111111111111111 0000000000000000000000000000000000000000000