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Sep
13
awarded  Teacher
Sep
13
answered Last Round in DES
May
30
comment how to use common modulus attack?
Oh right, so this means the message from both parties is multiplied by s1 and s2 respectively right?
May
30
comment how to use common modulus attack?
@mikeazo how did you move to the 2nd step where M^e^s1 became M^e*s1
May
30
accepted How small are we talking about when defining the small public/private key exponent
May
30
asked How small are we talking about when defining the small public/private key exponent
May
30
accepted The improvement of the private key exponent in the M.Weiner Attack
May
29
asked The improvement of the private key exponent in the M.Weiner Attack
May
6
comment Shor's Algorithm values
@daniel however, if r wasn't even then we should return to the first step of the classical part right? as in choose a different a where a<N (N= the number we want to factor)
May
5
awarded  Commentator
May
5
comment Shor's Algorithm values
@daniel i think i am, but how is r/2 =-1 leading to r=-2?
May
3
awarded  Editor
May
3
revised Shor's Algorithm values
added 2 characters in body
May
3
asked Shor's Algorithm values
Mar
21
comment Decrypting Triple-DES using 2 keys in crypto tools
This makes sense, so your saying to decrypt i will use c4 and lets say the last message as an IV to begin with?
Mar
20
comment Decrypting Triple-DES using 2 keys in crypto tools
Great, but for the first decryption process what is the IV going to be? I mean I will start off by the cipher text I got, then I'll decrypt it with K2 then Encrypt it with K1 then Decrypt it with K2 again then that result I'll XOR it with the IV..am I right?
Mar
20
comment Decrypting Triple-DES using 2 keys in crypto tools
@tylo I agree with you, and i'm currently reading it, but I was asked to use the way I mentioned.
Mar
20
comment Decrypting Triple-DES using 2 keys in crypto tools
I searched it up and it's basically a triple DES using a CBC mode (Cipher block chaining mode) where the output of the first E-D-E process is considered as the IV for the next round so that is where the XOR-ING comes in. As for the keys, I'm asked to use 2 different keys where E(k1) - D(K2) - E(k1)
Mar
20
asked Decrypting Triple-DES using 2 keys in crypto tools
Mar
8
accepted Number of possible keys in a Play fair cipher