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Mar
28
revised derangements and permutations in cryptography
Proofreading
Mar
28
revised derangements and permutations in cryptography
Give an approximation
Mar
28
revised derangements and permutations in cryptography
Uniformize vocabulary.
Mar
28
revised derangements and permutations in cryptography
Yet another form
Mar
28
revised derangements and permutations in cryptography
Polish; alternate determination with one less case.
Mar
27
answered derangements and permutations in cryptography
Mar
27
reviewed Excellent Choice of reduction polynomial in Whirlpool's internal cipher
Mar
27
comment If PGP and GPG both follow the OpenPGP standard, are they 100% compatible in all use cases?
There are several other subtle hurdles, including: not-so-old-and-still-around versions of GPG insist to require installation of a plugin to handle the IDEA block cipher, required for compatibility with cryptograms generated by PGP when old-format keys are used with default (or at least common) options. Fortunately, the IDEA patent has expired and GPG (starting end of 2012) comes with IDEA built-in.
Mar
27
revised Near preimages, applicable to Bitcoin?
Link to references on target and difficultly
Mar
27
comment Near preimages, applicable to Bitcoin?
Actually, Bitcoin mining seems closer to requiring to find $X$ such that $\text{SHA-256}(\text{SHA-256}(X))<\text{target}$ (I have the details fuzzy); so the function to attack is not $\text{SHA-256}$, but rather $\text{SHA-256}^2$. In any case, I know no attack, even theoretical, on even (full) $\text{SHA-256}$.
Mar
27
revised Near preimages, applicable to Bitcoin?
target, not difficulty
Mar
27
revised Near preimages, applicable to Bitcoin?
Make the question intelligible; change the title radically
Mar
27
revised Do we need symmetric cryptosystems?
added 26 characters in body
Mar
27
revised Explanations for the complexity values for second preimage attack on GOST?
Polish #3 and #6
Mar
27
revised Explanations for the complexity values for second preimage attack on GOST?
Polish #3 and #6
Mar
27
revised Do we need symmetric cryptosystems?
Polish
Mar
27
answered Do we need symmetric cryptosystems?
Mar
26
awarded  Revival
Mar
26
revised LFSR get output from characteristic polynomial?
Fix formula for the constant representing P(x) in the section on reflected representation, and redo the same example in this form
Mar
26
answered Cryptanalysis of AES on SSD with TRIM enabled