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Jul
31
comment Is this an acceptable All-or-Nothing Transform?
In that case, should "Extract $b$ bits ... $G$" be replaced with "Generate a random block of $b$ bits"? $\hspace{.6 in}$
Jul
31
comment Is this an acceptable All-or-Nothing Transform?
"the resulting blocks $m_{1}$, $m_{2}$, $\ldots$, $m_{n}$" $\;$
Jul
31
revised Is this an acceptable All-or-Nothing Transform?
corrected a description error
Jul
31
reviewed Leave Open OTT service using FPE
Jul
31
comment Is this an acceptable All-or-Nothing Transform?
"from $G$" $\: \mapsto \:$ "from those blocks with $G$" $\;\;\;$ ? $\;\;\;\;\;\;\;$
Jul
31
reviewed Leave Open Known plaintext attack on ElGamal encryption
Jul
30
revised ECDH anonymous key exchange to avoid PKI
fixed security hole and simplified protocol
Jul
29
comment Public key Issue - same key pair as existing one?
More relevantly, does 2**2024.5 look big? $\;$
Jul
29
comment Public key Issue - same key pair as existing one?
@CodesInChaos : $\;\;$ On the other hand, except for 3-prime 1024-bit RSA, I don't know of any way to give a mathematical proof that the "probability of colliding RSA keys is much smaller than that if you use" primes compatible at least one $\: e \in \{3,\hspace{-0.03 in}5,\hspace{-0.04 in}17\} \:$ or with $\: e = 257 \:$ specifically that are otherwise chosen perfectly at random. $\;\;\;\;\;$
Jul
29
comment The REACT transform and Replayable CCA
Also, "an IND-secure symmetric encryption scheme" with respect to CPA or CCA? $\hspace{1.51 in}$
Jul
29
answered Public key Issue - same key pair as existing one?
Jul
29
answered ECDH anonymous key exchange to avoid PKI
Jul
28
comment The REACT transform and Replayable CCA
You might be interested in one of these two papers. $\;$
Jul
28
comment Implementing CD serial key system
What do you mean by "use a threshold approach"? $\;$
Jul
28
revised A problem about zero knowledge proofs
changed spacing, improved grammar, and removed ",thx"
Jul
27
revised Known plaintext attack on ElGamal encryption
changed spacing and added period
Jul
27
revised Elliptic Curve Cryptography
improved grammar and punctuation and changed equation to TeX
Jul
27
comment Reversing DJB2 Hashes
If you can do that, then you should have said so, since your reverse algorithm doesn't. $\hspace{.95 in}$
Jul
27
revised Reversing DJB2 Hashes
gave explanation
Jul
27
comment Reversing DJB2 Hashes
This is an alternative to your algorithm (and one that actually accounts for $\hspace{1.9 in}$ r being implicitly modded by $2^{32}$). $\;$