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seen Sep 16 at 19:08

Aug
26
awarded  Teacher
Aug
25
answered Found a way to crack AES-128, what now?
Oct
10
comment Encrypting files with known headers
@LateralFractal If by "list question" you mean was I asking for a recommended approach for encrypting in this situation, no I wasn't. However, if the answer is "sometimes", then some discussion of the circumstances under which there is a problem is (I think) warranted, and if that incidentally pulls in some recommendations, those can be helpful.
Oct
10
comment Encrypting files with known headers
+1, but I thought that the "constant stream of ... random bits" was a property of stream ciphers, not block ciphers, though I see from your link that the CTR mode makes a block cipher act like a stream cipher. So, does what you say not apply to other modes of block ciphers (ECB aside)? Also, a very "popular" encryption scheme is zip file encryption, which is notoriously bad; it would be helpful if your answer could be more specific about which "popular encryption schemes" are okay in the context of this question. Thanks!
Oct
10
awarded  Scholar
Oct
10
comment Encrypting files with known headers
Accepted as the most understandable and reassuring answer. (I lack the expertise to say the most correct.)
Oct
10
accepted Encrypting files with known headers
Oct
10
awarded  Supporter
Oct
10
comment Encrypting files with known headers
Even when using TLS one must still choose which algorithms will be used (e.g. when configuring a web server). Still, +1 for some useful information and concerns.
Oct
10
awarded  Student
Oct
10
asked Encrypting files with known headers