Reputation
35,337
Next tag badge:
117/100 score
19/20 answers
Badges
5 74 143
Newest
 Enlightened
Impact
~730k people reached

Jan
7
reviewed Approve blowfish tag wiki excerpt
Jan
7
reviewed Approve blowfish tag wiki
Jan
7
wiki created group-theory description
Jan
6
answered Is it possible to create an easy to use encryption/decryption method that will never be comprimised?
Jan
6
reviewed Approve Obtaining the key length from the ciphertext of an auto-encipher
Jan
5
reviewed Approve How can I use asymmetric encryption, such as RSA, to encrypt an arbitrary length of plaintext?
Jan
5
comment Cycle attack on RSA
@EmilioFerrucci: for the general intuition, consider a prime $u$, and a prime $v$ which divides $u-1$. Write $w = (u-1)/v$. Values $x$ with an order which is not a multiple of $v$ are such that $x^w = 1 \pmod u$ (because $x^{u-1} = 1 \pmod u$). So these $x$ are solutions to a polynomial of degree $w$ in a field (integers modulo $u$); thus, there can be no more than $w$ of them, and $w/u \approx 1/v$. Here, we work modulo $p-1$ which is not prime, but the same general principle applies.
Jan
5
answered Cycle attack on RSA
Jan
2
reviewed Approve
Jan
1
awarded  Nice Answer
Jan
1
awarded  Enlightened
Dec
31
answered Related-key attacks on AES
Dec
31
answered Why not use an algorithm's code rather than data itself for one time pads?
Dec
31
awarded  Nice Answer
Dec
28
answered AESManaged Trade Compliance Issue in United States
Dec
28
revised AESManaged Trade Compliance Issue in United States
grammar and spelling
Dec
27
reviewed Approve Inverses in Truncated Polynomial Rings
Dec
26
answered Including a “purpose” designation in a digital signature
Dec
25
comment What is the relation between Discrete Log, Computational Diffie-Hellman and Decisional Diffie-Hellman?
Just for completion, pairing-based cryptography is about using specially crafted elliptic curves where DL and CDH are assumed difficult, but DDH is easy. So we have some quite plausible reasons to believe that CDH is strictly harder than DDH (or so we fervently hope, at least).
Dec
19
answered Is EKE attackable by a brute-force password search?