Questions tagged [passwords]
Passwords are secret keys which human beings can memorize.
528 questions
2 votes
3 answers
167 views
Does adding a common prefix to several passphrases makes them weaker if the prefix is leaked but not the rest?
I am using Gnupg with AES256 symmetric encryption. There is a passphrase for each kind of files to encrypt, e.g. the passphrase for all work-related documents might be MyWorkRelatedPass19, whereas ...
- 163
0 votes
2 answers
118 views
Is the Vigenère Cipher unbreakable if random passwords are being encoded?
If a random password, using a selection of all 94 printable ascii characters (I don't use spaces), is encoded using the Vigenère Cipher, is it unbreakable as there would be no common words or letters ...
- 137
2 votes
2 answers
260 views
Does password bruteforcing decrease password's entropy?
So, I randomly sampled a password out of a space of $N$ many candidates, and handed its hash to an adversary. My password's entropy is $\log_2N$ bits. The adversary brute-forced the 1st half of ...
- 721
0 votes
0 answers
62 views
Safety of password manager algorithm
I would like to ask about vulnerabilities of the following algorithm for a password manager. It is structured as follows: There is a master password UTF-8 10 characters long, not to be stored anywhere....
- 137
3 votes
2 answers
365 views
Are Java PKCS #12 key stores reasonably secure with average strength passwords?
Suppose: We are using an application that stores sensitive private key information in a standard Java PKCS #12 keystore. Users are expected to provide an overall store password and also a password ...
- 141
3 votes
1 answer
271 views
Judgment of Results from NIST Randomness Testing
I am using the NIST suite to test the randomness of binary numbers and I have a 64KB dataset. I am confused with the results in finalAnalysisReport.txt. I have the ...
- 43
2 votes
1 answer
265 views
Password Manager Architecture and Design
I'm working on a local, client-side password manager. I want to hash a master password with argon2 to store it safely in an SQLite database. This will be how a user could login and be authenticated. (...
- 123
0 votes
0 answers
75 views
Can you have a public password file that is still secure?
So I’ve been reading about different ways to store passwords on servers (plain text, encrypted, hashed, hashed + salt, slow hash + salt) and I wanted to find a way where a leak of the stored passwords ...
