The symmetric ciphers
peter at digitalbrains.com
Wed Oct 30 20:37:53 CET 2013
On 30/10/13 20:25, Philipp Klaus Krause wrote:
> If we have plenty of randomness available, we could do this a different
> way: XOR the message M with a random one-time pad P to obtain N. Encrypt P
> with A, and N with B.
Why are you inventing new crypto primitives? Symmetric crypto is already good
But to immediately debunk this system: there is a strong correlation between P
and N (i.e., the plaintext). This means you are encrypting strongly correlated
material with two different ciphers. If you can somehow make them meet in the
middle, you no longer have to completely break one of the ciphers completely
but instead break both partially, which might be orders easier to do.
I use the GNU Privacy Guard (GnuPG) in combination with Enigmail.
You can send me encrypted mail if you want some privacy.
My key is available at <http://digitalbrains.com/2012/openpgp-key-peter>
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