New encryption block...

[Era Scarecrow via Digitalmars-d]

On Monday, 17 October 2016 at 08:20:23 UTC, Kagamin wrote:
> On Wednesday, 12 October 2016 at 10:34:52 UTC, Era Scarecrow 
> wrote:
>> Maybe it would be better for random number generation rather 
>> than secure encryption? Not sure.
>
> It's used in windows CRNG to compute a big hash of big amount 
> of entropy.
>
> BTW if you encrypt something twice, isn't it decryption?

  No, not unless they are mapped in a way where x becomes y, and y 
becomes x. Like ROT13, that would result in decryption as 
encryption, or if the XOR is used twice then it's decryption or 
redundant.

  Trust me what I'm doing is considerably more complex, encrypting 
multiple times won't get you the original value (for a very very 
long time, unless you have a very poor set of RNG inputs)



  You know I can't help but remember the last time I got into 
encryption with Semeir, where it would create a number of 
circular chains of different lengths and then the rotation of 
where it would move to for encrypting would change based on not 
only the last character it encrypted but how far along in the 
stream it was. (Originally stream encryption, not block 
encryption). Alas breaking large data down into smaller and 
larger blocks (6 bit, 12 bit, 20 bit, etc) and encrypting each 
with a different set of keys was... time consuming, and it really 
was over my head... I doubt anyone uses it, although if they do I 
can almost guarantee no one can break it due to it's obscureness 
:P