Trey

I need to use Serpent but apparently neither CryptoAPI nor CNG offers it on windows, any alternatives?

@SEJPM so they are bad because they are slow basically? I thought they being uniform was good since that would me randomness

I'm a little confused about TNRGs and CSPRNG, regarding this question crypto.stackexchange.com/questions/38053/… it says that TNRGs are rarely uniform, so why not use them as a CSPRNG rather than a seed for a CSPRNG?

Is good for the keysize to be AT LEAST as large as the blocksize?

In the key schedule of DES are both 28-bit parts rotated each round? My textbook says it's only one but wikipedia says it's both

it seems the initial and final permutations of DES don't add any security at all, what's the rationale behind them?

given the keystream , the period of a LFSR, a ciphertext and plaintext pair, how do I find the IV?

thanks @kelalaka!

can someone give me an example of a non-linear LFSR?

ok

does the the seed used in the KSA of RC4 have to be secret?

where can I find the number of attempts a current CPU can do in a second?

a salt*

@SEJPM what are your thoughts on using a pepper instead of hash?

thanks @EliahKagan that worked

I have a file with numbers like this: 0x1, 0x2, 0x3 all separated by comma. I want to change the comma by a "\" by for some reason sed won't do it. What's wrong with "sed s/,/\\/g" ? shouldn't this be changing all commas to / ?

can someone please help me? I'm trying to understand relocations in ELF, but I'm having some trouble with the documentation on this which is rather cryptic. The relocation equations for instance, describe 3 parameters, S, A and P. Now I get it that A is just the addend which is some number used to aid the relocation calculation and S is the value of the function being referenced but about P? The manual describes it as "the place of the storage unit being relocated" but what does that even mean?

@terdon didn't work

how can I type « and » ? I'm using i3/xfce4

can some help me with this question math.stackexchange.com/questions/219941/…

can someone explain me the difference between integer rings and galois fields?

don't you have to prove that before?

@Thorgott here's what I don't get it. He's trying to proove that $(k+1)^3 < 2^{k+1}$ he expands the polynomial to $k^3 + 3k^2 + 3k + 1$ and on the next line he changed it to $k^3 + 3k^2 + 9k + 10$. So to me, he doesn't seem to be proving the original problem. He's now prooving that $k^3 + 3k^2 + 9k + 10 < 2^{k+1}$ rather than $(k+1)^3 < 2^{k+1}$

so if have N and T such that N < T, I can replace N by T?

can someone explain me, how did Adriano replace 10 by k in this proof? math.stackexchange.com/questions/447923/…

can someone explain me how do I transform $x + \frac{1}{2} \int\frac{\frac{1}{2}(u + 1) -1}{u^2+2}du$ into $x + \frac{1}{4} \int\frac{(u -1)}{u^2+2}du$ ?

well, I was trying to take the derivative of $\frac{arctan(x)}{1+x^2}$, I applied $u = arctan(x)$, $du = 1+x^2$ but then I ended up with $\frac{u}{du}$ rather than ${u}{du}$ and I got stuck

trying to derive with respect to x

actually, I meant $\frac{x}{dx}$

how do I take the derivative of something like $\frac{u}{du}$ ? cause it's not the same as ${u}{du}$ right?

I hope so

not a big fan of linear algebra either

can an overdetermined system have infinitely many solutions?

what's the difference between a plane and a subspace?

is there a free/trial version for ida's decompiler plugin?

how can I instruct olly to pass the exception to the EH rather than swallowing it?

Can I see the segment registers in Olly? if so, how?

IDA is showing something like: push dword_A123, but how do I find out the value of that?

How can I determine the value of variable using static analysis only?

Accidentally pressed the hotkey 'R' in ida when trying to rename a variable, now i'm seeing "dword ptr [rbp - 4] rather than [rbp+var_4]" how do I fix this?

can someone explain me the purpose of this instruction: nopw %cs:0x0(%rax,%rax,1)

what happened to openRCE?

what does loc_XXXXXX mean in IDA?

when asking a question

you know

is there a shortcut for drawing the identity matrix?

what does it mean to "run in a bit of a snag" ?

what's the difference between "on the table" and "onto the table" ?

what exactly does "a soft question" mean?

what dialects use "dern" rather than "darn" ?