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Sep
23
reviewed Excellent How to supply the GCM authentication tag to the OpenSSL command line tools?
Sep
23
reviewed Excellent What criteria make the theta step of Keccak's round function reversible?
Sep
23
reviewed Excellent What to watch for with openssl generating weak keys? (low entropy)
Sep
23
revised chaining rsa with ecies
Added new tag.
Sep
23
revised Textbook-RSA meet-in-the-middle attack against other RSA based schemes?
Removed "ciphertext-only" tag that didn't quite apply (there is some plaintext knowledge). Added new tag.
Sep
23
revised Cryptanalysis Affine Cipher: Brute-Force Search Vs. Meet-in-the-middle
Added new tag.
Sep
23
awarded  Excavator
Sep
23
revised Break double encryption
Added existing and new tag.
Sep
23
revised Can a nested block cipher avoid the meet in the middle attack by using a secret initialization vector for the inner encryption?
Added new tag.
Sep
23
revised Why is triple-DES using three different keys vulnerable to a meet-in-the-middle-attack?
edited tags
Sep
23
revised Meet-in-the-middle with checking complexity
Added new tag.
Sep
21
comment Can I construct a feasible stream cipher out of HMAC and a secure hash algorithm?
Very typically, IVs are prepended to the ciphertext and MAC's are appended to it.
Sep
21
comment Can I construct a feasible stream cipher out of HMAC and a secure hash algorithm?
@MaxthonChan: Yes, you can keep the IV with the ciphertext.
Sep
19
comment Can I construct a feasible stream cipher out of HMAC and a secure hash algorithm?
Yes, they should be independent, assuming you want to use the key more than one time.
Sep
18
answered Which encryption method supports random reads?
Sep
18
revised Can I construct a feasible stream cipher out of HMAC and a secure hash algorithm?
Corrected the alternate proposal's relation to CFB mode.
Sep
18
comment Can I construct a feasible stream cipher out of HMAC and a secure hash algorithm?
Whoops, you are right. Not sure how I missed that, considering what I used it for CFB mode.
Sep
18
answered Can I construct a feasible stream cipher out of HMAC and a secure hash algorithm?
Sep
18
comment Encrypting 8 times with 8-bit key beneficial?
For ciphertext only, aside from algorithm-specific properties/weaknesses, I don't know of anything better than brute-force.
Sep
18
reviewed Approve modular-arithmetic tag wiki excerpt