The Side Channel

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4:22 AM

@EllaRose I was surprised that my answer got accepted anyway, since it was a very basic answer just giving a few pointers. If a better answer is posted, I'm happy with OP accepting it instead.

forest

4:45 AM

-4

Q: Audio Encryption

I really need help. I have the idea to create a music playback application in which it is not possible to have the music out of the application and that the music is only readable in the application. My idea being to proceed with AES encryption of the audio I ask if it is possible to encrypt the ...

"guise i just had this idea!" - reinvents DRM

2 hours later…

Crypto HNQ

7:08 AM

Q: In which public key encryption algorithms are the private and public key not reversible?

The RSA public key encryption system has the characteristic that the public key and the private key can be reversed. That is, information encrypted with the public key can be decrypted with the private key, but the keys are themselves symmetric, such that information encrypted with the private ke...

rsa public-key paillier

3 hours later…

Maarten Bodewes

10:01 AM

"bits are more atomic than atoms" - I don't know why I came up with that one on SO, but I like it :)

2 hours later…

Maarten Bodewes

11:46 AM

Why are you using the "Deprecated Encryption Standard"? -- I'm on a roll :P

2 hours later…

Future Security

1:30 PM

@MaartenBodewes Atomic meaning indivisible or atomic meaning dangerous?

Maarten Bodewes

2:25 PM

I'm not sure how much energy a split bit will generate... Currently it is consuming my energy on SO, so it cannot be much.

1 hour later…

Ella Rose

3:27 PM

> At 20 °C (room temperature, or 293.15 K), the Landauer limit represents an energy of approximately 0.0172 eV, or 2.75 zJ.

Probably the closest thing to "a split bit" as reality has to offer

3 hours later…

Future Security

5:58 PM

That's what I was thinking, but that's energy used (and isn't splittable), not released. Then I remembered that there are non-integer base systems. Base sqrt(2) included.

5 hours later…

Crypto HNQ

11:04 PM

Q: Other than an exponent greater than 1, what are the considerations when creating a random 256-bit private key using Diffie Hellman?

Let's assume that I choose the bits for my 256-bit private key exponent by flipping a coin 256 times. Are there any other issues, besides the randomness of the 256-bit private key to consider? For example, should the most significant bit always start with 1 in order to ensure a private key of a ...