Tagged Questions
0
votes
2answers
137 views
Generate random number which should depend on key
i want to generate random number for example from [1..100].
This algorithm which generates random number should work similarly like ("Linear congruential generator").
Here:
c - increment should ...
-1
votes
1answer
91 views
Pseudo-random Number generation for Passwords
i want to know what is the best pseudo-random number generation algorithm for passwords? for example my scenario is I have to generate 5K pseudo-random bits from a user-supplied password(6 ...
2
votes
2answers
125 views
Does a hash function in chaining mode or in counter mode make a better pseudo-random number generator?
I have two pseudorandom generators:
$f_1$ takes a random seed $l_0||r_0$ $\in \{0,1\}^{160}$ as input and outputs $r_1||r_2|| \dots ||r_k$, where $l_i||r_i = \operatorname{SHA-1}(l_{i-1}||r_{i-1})$ ...
0
votes
1answer
155 views
Cryptographically strong pseudo-random seq. generators
If a pseudo-random sequence generator is built so that it uses an n-bit seed and outputs a string that is of length x. Let's say one wants to generate a bit string of length y and uses the previous ...
1
vote
1answer
1k views
Cryptographic security of PHP mt_rand() function using Mersenne Twister algo
At stackoverflow this question has been asked. It uses additional random entropy and a hash method (among others) to try and create a cryptographically secure pseudo-random number generator for PHP. ...
