Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with sha-3
Search options not deleted
user 4557
SHA-3, also known as Keccak, is a cryptographic hash function standardized by NIST as a new alternative to the SHA-2 hash function family.
2
votes
1
answer
1k
views
SHA3 HMAC key padding
According to the pseudocode, keys longer than the block-size of the underlying hash function are shortened by hashing the key. Furthermore, keys shorter than the blocksize are zero-padded up the lengt …
- 4,007
3
votes
SHA3 HMAC key padding
In lieu of any answers; I've compared my own implementation with the few test vectors I've been able to find (one of which can be found here) and it would appear that yes, keys longer than the block-s …
- 4,007
4
votes
Accepted
Hashing high entropy key into AES format
I seem to recall that shared secret keys should be hashed before using as encryption keys (some brief discussion here).
If your key is already high-entropy, then hashing with SHA256 is fine. If you …
- 4,007