The password-based-encryption tag has no wiki summary.
8
votes
1answer
397 views
How can I make my cipher show the avalanche effect?
I am a beginner in cryptography. I designed an password based encryption-decryption algorithm, which uses a random salt and a password to encrypt a message. I'm using SHA-512 for hashing, matrix ...
4
votes
1answer
80 views
How to generate a key using any m passwords out of total n?
My application requires an AES-256 key K for some secure operation. In order to avoid saving this key in application, I have implemented following scheme:
There ...
3
votes
3answers
831 views
Simple/beginner level explanation of salt
I'm a beginner to cryptography and looking to understand in very simple terms what salt is, when I might need to use it and why I should/should not use it. Can anyone offer me a very simple and clear ...
2
votes
2answers
119 views
How to derive two keys from one password
What is the best way to generate two independent symmetric keys from one user-entered password or passphrase?
Would using both scrypt and pbkdf2 achieve this?
2
votes
1answer
90 views
Hashing a password with the password?
I was wondering if hashing a password with the password would be a good way of encrypting the password. So, the user must know his/her password to get the same result as the one in the database. Also, ...
2
votes
1answer
168 views
Is there a known vulnerability when using identical key and salt with PBKDF2?
For optimum security, a random salt should be chosen for PBKDF2.
I came across a scenario where I produce a hash of a random file that serves as the "password". Due to the nature of files, this has ...
2
votes
2answers
132 views
How can mega store my login details and still be secure?
I understand how Mega's encryption works. For a quick summary of all those in the future looking for an answer on this... here is how it works:
Upon first signing up for an account you make a ...
1
vote
1answer
230 views
Can I secure my key by XORing it with a hashed password?
I'd like to build a simple password-protected symmetric key system. The key-creation process in my system operates as follows:
The system creates a 256-bit key purely at random.
The user chooses a ...
-2
votes
3answers
102 views
how much is secure to encrypt a password using itself (as encryption key) for storing it on a unsecure media?
I want to store a password securely on a storage (suppose in a usual unencrypted file).
I use this password as AES key to encrypt itself (using AES-ECB) & then store it on the media (the password ...
