2,978 reputation
619
bio website
location Curitiba, Brazil
age 35
visits member for 3 years, 1 month
seen 2 days ago

Computer analyst


Jun
27
comment How secure is ionCube compiled code?
in general, it isn't that easy to read the code that a decompiler produces, since the "compilation" process of PHP + ioncube will produce some optimizations. Your costumer won't have a nice, easy to read and understand, code. But he can hire someone that will understand the bytecode, or the assembly code...
Jun
25
answered How secure is ionCube compiled code?
Jun
25
comment Encrypt-function inside PHP code that you have to publish
@rubo77 ops, not exactly. Now that you explained a little better your problem, take a look at those hardware solutions. Reseach a bit about Java Cards, for example: you could make the encryption part of your system happen inside it...
Jun
25
answered Encrypt-function inside PHP code that you have to publish
Jun
21
answered Can unencrypted email be read or altered while it is in transit?
Jun
12
revised Secure wiping of EEPROM and flash memory
edited body
Jun
11
answered Secure wiping of EEPROM and flash memory
Jun
7
answered User specified iteration count
Jun
7
comment How to know, in Windows XP, if files were copied, deleted or moved from a pendrive?
@LenaQueen had sucess ?
Jun
7
comment Composition of passwords
@Mok-KongShen : don't think so, at least thinking in brute-force attacks. But it's not that hard to construct such partial dictionary, harvesting texts form internet... The brute-force program would also be customized to take advantage of such custom dictionary.
Jun
6
revised What are the vulnerabilities of reusing passwords for generation of keys and encrypted files?
added 4 characters in body
Jun
6
answered What are the vulnerabilities of reusing passwords for generation of keys and encrypted files?
Jun
6
comment Composition of passwords
Calculating it. Basically, someone would have to take all books and calculate "what are the words that follow this other word in books?". Then the person would have a dictionary to make his brute-force attack. For example, after trying the word "for", he would try all combinations for the random element, then would try only the words he saw after "for" in his attack. Much better then trying all existing words...
Jun
6
comment How to know, in Windows XP, if files were copied, deleted or moved from a pendrive?
@LenaQueen: yes, can give some hints. 1st: use the file names from your flash drive (the sensitive ones) and do a simple search in the computer. 2nd: what kind of file was that? If it were excel spreadsheets, opne excel and see the recent files, to see if it was opened there. Were images? open the image visualization program from the computer... 3rd: search for .lnk files, they are created when windows does some activities (like pre-visualizing the file content on windows explorer). Let me know what you`ve done, got...
Jun
5
answered Why is 8ms a goal for hashing?
Jun
5
comment Why is 8ms a goal for hashing?
can you remember where you read that? I can't find this recomendation anywhere...
Jun
5
answered Is it possible to make a phone call appear to come from another phone, even to the network provider?
Jun
5
comment How to know, in Windows XP, if files were copied, deleted or moved from a pendrive?
I edited your question to reflect what you told us and what you need to know...
Jun
5
revised How to know, in Windows XP, if files were copied, deleted or moved from a pendrive?
reworte the whole question to reflect actual information from the OP
Jun
5
comment How to know, in Windows XP, if files were copied, deleted or moved from a pendrive?
in this question you have some hints: security.stackexchange.com/questions/23280/…