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 mac
Search options not deleted
user 107068
(or message authentication code), a short piece of information used to authenticate a message, and the algorithm to create and check such information, using a secret key.
2
votes
1
answer
132
views
Does having more than one HMAC provide more information to the attacker?
Suppose $N$ many messages has been sent from $A$ to $B$ in this format:
$\operatorname{HMAC}(K, C(i)) \mathbin\| C(i)$.
Where
$C(i)$ is some cipher-text encrypted with some secure algorithm using s …
4
votes
1
answer
311
views
Security of using key size larger than the message digest size in HMAC, with one time pads
HMAC uses encrypt-then-mac, so the MAC is $\mathsf{HMAC}(K, C)$, where $K$ is the key and $C$ is the ciphertext. …