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Mar
4
comment Confidentiality then Integrity with different keys
This is a migrated repost of crypto.stackexchange.com/questions/33380/… . Please do not post the same question on multiple sites.
Mar
4
awarded  Nice Answer
Feb
28
comment Does TLS have to provide both confidentiality and authenticity?
“You've really nothing to lose when using encryption” That's not true: you lose caching (except at the endpoints). Caching is only useful for large volumes of data though, not for authentication protocols.
Feb
21
revised DIY over-encryption with a related key
edited title
Feb
20
answered Create a potential input for sha-256 hash given a substring of input?
Feb
18
comment What's the issue with Apple's backdoor?
@ChrisPeikert Oh, I wasn't familiar with the details of that case, thank you. In this case I wonder why FBI doesn't do offline enumeration. FBI might have trouble with a secure enclave (they could probably break it but it might cost a lot), but with ordinary flash memory, they can just make copies or use independent software.
Feb
18
revised What's the issue with Apple's backdoor?
added 335 characters in body
Feb
18
answered What's the issue with Apple's backdoor?
Feb
17
reviewed Close Compression in Symmetric-Encryption?
Feb
10
revised What effect does a salt have on attacks against hashes's fundamental properties?
deleted 19 characters in body; edited title
Feb
9
revised Steganographic embedding of an RSA-encrypted message into an image
added 50 characters in body; edited title
Feb
8
reviewed Approve McEliece Cryptosystem Implementations
Jan
24
awarded  Proofreader
Jan
24
reviewed Approve System parameters in identity-based encryption
Jan
19
comment Understanding the cryptography used in a file
I'm sorry but this question is neither on-topic nor suitable for Stack Exchange. What you have here is a reverse engineering problem, not a cryptography problem. Reverse Engineering would be a more appropriate forum, but don't just re-ask there — this question is too broad, essentially you're asking us to tell you all we know about reverse engineering. You need to do some of the job of breaking this up into manageable parts. Do note that attacking such problems by looking at one data dump is rarely useful, usually you need to confront multiple datasets or observe the code in a debugger.
Jan
17
reviewed Approve Diffie-Hellman, RSA and the types of public key cryptography
Jan
13
comment Should I use RSA encryption since RSA is said to be broken by NSA?
If you're typing the letters RSA into your code, you're doing it wrong. Cryptography is not a magic bullet and is hard to get right. Use protocols and libraries that experts have written and let them pick the algorithm.
Jan
2
revised trusted-platform-module wiki excerpt
the tag is about TPM, not about TXT
Jan
2
revised trusted-platform-module wiki description
the tag is about TPM, not about TXT
Jan
1
suggested approved edit on trusted-platform-module tag wiki