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Jul
17
comment Why does “2xAES-256” provide “99.99%” security strength whereas “1xAES-128” provides “40%”?
@mikeazo “Meat in the middle attack” is a great name for a sandwich! What's the recipe?
Jul
15
comment What good is a hash accompanying a program?
PGP only helps if the recipient has some way to authenticate the signature. Otherwise it's just one more generation of the chicken-and-egg problem.
Jul
15
comment What good is a hash accompanying a program?
Similar question on Unix & Linux: Why compute checksums of downloaded files?
Jul
13
reviewed Leave Open What is the difference between the standard representants of $\mathbb Z/q\mathbb Z$?
Jul
12
reviewed Close Multiplicative inverse ($17^{-1} \mod 31$)?
Jul
11
reviewed Close How far is public-key crypto involved in “banking world”?
Jul
9
revised Diffe-Helman Exchange result is always 1
note that g doesn't have do (and typically doesn't) generate the whole group (thanks poncho); link to various posts about DH parameters
Jul
8
comment Diffe-Helman Exchange result is always 1
@poncho That's interesting. What information is leaked? How does it help that $g$ isn't a generator?
Jul
8
reviewed Close RSA algorithm assignment
Jul
8
reviewed Close seemingly common error with OpenSSL and creating a PKS no certificate matches private key
Jul
7
revised Does SHA-1 meet the strict avalanche criterion?
added 144 characters in body; edited tags
Jul
7
answered Diffe-Helman Exchange result is always 1
Jul
6
reviewed Leave Open computational complexity class of decryption of AES
Jul
5
reviewed Close What are the advantages of using OFB (Output Feedback Mode)?
Jul
3
reviewed Leave Open I hashed my bag and in it I put… “Is there a hash for unordered items?”
Jul
2
comment How often does RSA-OAEP have a leading zero?
@TBridges42 A key that's one bit short would have the expected number of bytes, yes. But it's unclear to me whether the file with the problematic length even contains a key (and if it does, what makes you sure that it's an RSA key). At that level of remove, it's difficult to know what the vendor did wrong, what your customer is perhaps not reporting faithfully and completely, and what you might be mixing up.
Jul
1
answered How often does RSA-OAEP have a leading zero?
Jul
1
comment How often does RSA-OAEP have a leading zero?
Did you mean bytes where you wrote bits? A 128-bit RSA key would not bring any security, a 1024-bit key is as yet unbroken but should be at least scheduled for replacement.
Jul
1
reviewed Approve “123456” and “password” as crack standards
Jun
30
reviewed No Action Needed Fast mental encryption algorithm?