Tagged Questions
1
vote
2answers
187 views
Password Protected Zip: if attacker had one file, can use it to decrypt all files?
Consider a folder containing the following files:
(file1.txt, file2.doc, file3.pdf) all zipped and password protected, if attacker had one of these file, can use it for decrypting all without knowing ...
2
votes
2answers
2k views
Excel 2007 Encryption Strength
With a strong password of 10+ characters, mixed case, etc... Is the encryption of a Excel 2007 document secure enough to create reasonably strong defense against a brute force attack?
What encryption ...
1
vote
1answer
1k views
What algorithm/encryption type does Gmail use for security?
In the wake of the recent database hacks, i.e. Sony, Gawker, etc.. where the hackers have access to the hashed usernames and passwords, i've been more keen in paying attention to the sites and ...
21
votes
5answers
1k views
Do spaces in a passphrase really add any more security/entropy?
I often see passphrase suggestions written as a sentence, with spaces. In that format are they more susceptible to a dictionary attack because each word is on it's own as opposed to a large unbroken ...
10
votes
5answers
312 views
Security of using passwords or even passphrases to encrypt files
Is it ever appropriate to use real-world passwords to encrypt files to be sent via unsecure means.
By real world, I mean a password that is memorable and memorisable by a mere person?
I am implying ...
8
votes
3answers
1k views
time to crack file-encryption password - more than just iteration
I have often seen that takes x amount of time to crack a certain length password. But this just seems to be the amount of time it takes to iterate through all the possibilities. What about the time it ...
