Tagged Questions

0
votes
1answer
146 views

Password protection of encryption and signature keys

I would like to store encrypted backup of text files on my computer. I'm developing a python script using Pycrypto to achieve that, based on this code to use the library. (current code) The basic ...
2
votes
1answer
109 views

Security of re-encryption with a list of pre-computed password based keys

I have a problem where an encrypted file stored on a server needs to be decrypted through a precomputed list of passwords that are used one time only - OTP applied to encryption basically. The file is ...
0
votes
0answers
127 views

How to create a portable password storage [closed]

I want to have a portable way to store my passwords and key pairs. While I know that this already exists e.g. as Apps for iOS or Android and counterparts for OS X or Windows which can sync and ...
2
votes
2answers
342 views

Do OpenPGP/GnuPG apply slow hash to password when encrypting/decrypting key?

Password space is quiet small. Therefore slow hash should be applied to password before using it for encryption. Should slow hash function (like bcrypt) be applied to password before using it with ...
11
votes
2answers
1k views

What's wrong with storing private keys in the cloud?

I know this sounds like a dumb question, but whats wrong with it? Assuming that all private data is encrypted (by the client) using PBE AES256, then is this scheme more vulerable than storing keys on ...
11
votes
4answers
2k views

Security of passphrase-protected private key

If an attacker obtains a private key that was created with no passphrase, he obviously gains access to everything protected with that key. How secure are private keys set up with a passphrase? If an ...
7
votes
3answers
1k views

Additional security of keyfile on top of a master password for KeePass

I use KeePass + Dropbox to manage and synchronize my passwords across my devices. This system works really great and I trust KeePass' security model. However my biggest remaining concern is the ...
14
votes
2answers
1k views

How secure is Keychain on OS X?

Keychain is a built-in app on OS X that stores all of the user credentials, and allows for one to keep encrypted notes in an easily accessible way. Does anyone know how secure Keychain is? I know ...