533 reputation
19
bio website juaninf.blogspot.com
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visits member for 1 year
seen Apr 14 at 22:42

Apr
3
awarded  Yearling
Mar
15
accepted Semantic Security Active or Passive attacks?
Mar
11
comment Semantic Security Active or Passive attacks?
then actually the word "semantically secure" is not only for passive attacks ...
Mar
11
revised Semantic Security Active or Passive attacks?
added 11 characters in body
Mar
11
asked Semantic Security Active or Passive attacks?
Mar
6
accepted Perfect Secrecy, two Definitions
Feb
20
comment Are there any bijective one-way functions not based on number-theoretic hardness assumptions?
the trapdoor functions of McEliece and MPKC are not bijective ...
Jan
31
comment Question Error Correcting Codes
@DavidCash Is there any way of hidden the coset?
Jan
30
comment Question Error Correcting Codes
@DavidCash I understand,
Jan
24
comment Question Error Correcting Codes
in the last example (SAGE) m1 is a non-zero vetor in Ker G and that not belong to the same coset $C+e$.
Jan
24
comment Question Error Correcting Codes
@DavidCash Why finding another element of the coset is equivalent to finding ...?. Recall that $e$ is an fixed element. Here an example in SAGE H = matrix(GF(2),[[1,0,0,0,1,1,0],[0,1,0,0,1,0,1],[0,0,1,0,0,1,1],[0,0,0,1,1,1,1]]); Krnl = H.right_kernel(); G = Krnl.basis_matrix(); S = matrix(GF(2),[[1,1,0,1],[1,0,0,1],[0,1,1,1],[1,1,0,0]]) SH= S*H m=vector(GF(2),[0,0,1]); m1=vector(GF(2),[1,0,1,1]); e=vector(GF(2),[0,1,0,0,0,0,0]) print 'm*G+e=',(m*G+e),'sindrome',H*((m*G+e)) print 'm1*SH=',(m1*SH),'sindrome',H*((m1*SH))
Jan
24
reviewed Approve suggested edit on Question Error Correcting Codes
Jan
22
asked Question Error Correcting Codes
Dec
9
comment Can you provide an example in relation to Hidden Field Equations Multivariate?
I edit my question
Dec
9
revised Can you provide an example in relation to Hidden Field Equations Multivariate?
deleted 5 characters in body
Dec
9
asked Can you provide an example in relation to Hidden Field Equations Multivariate?
Dec
4
awarded  Tumbleweed
Dec
3
comment Using encryption schemes for identification
Merkle signature is mature and is postquantum ...
Dec
2
comment Why use two affine transformations in Multivariate Cryptography?
@DmitryKhovratovich Can you show Why is necessary $A$ and $B$ when $P$ is secret please?
Dec
2
comment Why use two affine transformations in Multivariate Cryptography?
@DmitryKhovratovich Do you have any reference where $P$ is public? My references have $P$ always than private.