35 reputation
6
bio website loibeo.com
location
age 22
visits member for 1 year, 3 months
seen Aug 22 at 12:19

See at my website


Sep
24
awarded  Autobiographer
Jul
22
awarded  Teacher
Jul
21
answered Encryption algorithm that produces dummy output on incorrect passwords
Jul
21
answered AES multiple devices to server communication
Jul
21
awarded  Supporter
Jul
21
accepted Security equivalent to Diffie–Hellman problem?
Jul
20
asked Security equivalent to Diffie–Hellman problem?
Jul
18
revised Given $g$, $b$, $g^{ab}$, is finding $g^a$ a hard problem?
added 60 characters in body
Jul
18
comment Given $g$, $b$, $g^{ab}$, is finding $g^a$ a hard problem?
Is this true if we compute $c = b^-1$ in $Z_r$ and then compute ${g^{ab}}^c$ to get $g^a$?
Jul
18
awarded  Scholar
Jul
18
accepted Given $g$, $b$, $g^{ab}$, is finding $g^a$ a hard problem?
Jul
17
comment Given $g$, $b$, $g^{ab}$, is finding $g^a$ a hard problem?
@fgrieu no wait, in your example obviously 1 in $Z_3$ but 4 isn't right? Isn't a group member of $Z_r$ smaller than the $r$?
Jul
17
comment Given $g$, $b$, $g^{ab}$, is finding $g^a$ a hard problem?
@fkraiem Sorry, but do you have any example in mind?
Jul
17
comment Given $g$, $b$, $g^{ab}$, is finding $g^a$ a hard problem?
@fkraiem $r$ is just a prime number, and $Z_r$ is a group. So yes the exponent $ab$ should be in $Z_r$..
Jul
17
revised Given $g$, $b$, $g^{ab}$, is finding $g^a$ a hard problem?
added 65 characters in body
Jul
17
comment Given $g$, $b$, $g^{ab}$, is finding $g^a$ a hard problem?
@fgrieu its just a mathematics group, am I having something confusing here? en.wikipedia.org/wiki/Group_(mathematics)
Jul
17
awarded  Student
Jul
17
comment Given $g$, $b$, $g^{ab}$, is finding $g^a$ a hard problem?
@fgrieu $a$ and $b$ are group elements of $Z_r$, and $a.b$ should be computed in that group.
Jul
17
comment Given $g$, $b$, $g^{ab}$, is finding $g^a$ a hard problem?
@curious p is known, and r is known also.
Jul
17
awarded  Editor