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Results tagged with hmac
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user 18411
a method for constructing a message authentication code based on a cryptographic hash function.
38
votes
What's the difference between HMAC-SHA256(key, data) and SHA256(key + data)
With non-Merkle-Damgård hashes, you don't necessarily need the HMAC construction, though. …
- 7,463
5
votes
Accepted
HMAC and non-repudiation
they could do that they might as well skip the HMAC and say "he sent it, here's proof he sent it." … So answers 1 and 2 are not right; the shared secret is why HMAC can't effectively provide this. …
- 7,463