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Results tagged with file-encryption
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user 33557
The process of encrypting individual files on a storage medium and permitting access to the encrypted data only after proper authentication is provided.
2
votes
Accepted
Derivation of many (Key, IV) pairs from random 128 nonces and one secret 512 master key
Do we get to assume that the master key is uniformly selected? The goal of a KDF, as the HKDF paper defines it, is this:
Its goal is to take a source of initial keying material, usually containing s …
- 14.7k
4
votes
Does exposing algorithm, key size and IV weaken the security?
Ciphers are already designed to provide a sufficient security margin against attackers who know those details, as other answers make amply clear. But another way of looking at this question is: if yo …
- 14.7k
3
votes
Reusing IV in AES for encrypting file
You aren't telling us exactly what you plan to do, but plenty enough that we can tell you: no, just no. The first mistake you're making is that you're talking about "files" in a way that's worrisome …
- 14.7k
2
votes
Accepted
Is this correct/incorrect password for file encryption scheme secure?
Your $k_2$ value is functioning effectively the same way as conventional password verification methods, where you store a salted password hash of the users' passwords. So it allows for an adversary to …
- 14.7k