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Results tagged with hash
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user 3306
A hash algorithm is a function which takes a variable size input and produces a fixed size output. The algorithm tries to make it difficult to predict the output for a given input, find two inputs with the same output, or reconstruct the input from the output.
7
votes
Is there any advantage of bcrypt over multiple iterations of SHA-x/MD5?
The problem you're facing have been already solved, and yes, you're going in the right direction: http://en.wikipedia.org/wiki/PBKDF2
- 3,798
5
votes
1
answer
174
views
Standards for CA cert revocation and time-constrained cryptographic algorithm parameters
I'm working on software that will be in use for foreseeable future (15 years+) that will need to validate XAdES-A signatures (long term archival, similar to PAdES-A, but for XML). That means, it will …
- 3,798
8
votes
Accepted
How secure is HTTPS with weak ciphersuites?
MD5 is insecure, but if it's used as a MAC function it's not yet broken
To their credit, if you have disabled MD5 hash, it will negotiate with SHA-1, in fact, if you disable RC4 it will negotiate AES: …
- 3,798
32
votes
2
answers
19k
views
How big should salt be?
I will be using scrypt to store passwords in my application. As such, I'll be using SHA-256 and Salsa20 crypto primitives (with PBKDF2).
Having that in mind, how big salt should I use?
Should it be …
- 3,798