Hi Mihailo,
Geoff is right on. Keep in mind the HMAC output ('keyed signature')
will be the size of the cipher's block size (typically 64 or 128
bits), rather than a conventional signature size. For example, 160
bits (SHA-1) or 512 bits (Whirlpool).
Jeff
On 1/30/08, mihailo <[EMAIL PROTECTED]> wrote:
>
> Hello.
>
> I would like to know if there exists some hashing function that uses a
> key for calculating a result. Or, is there any hash function H with
> the following description : H(data, key1) does not produce the same
> result as H(data, key2) ?
>
> Similar as encryption, but its result should not be reversible.
>
> Thanks in advance,
> Mihailo
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the "Crypto++ Users"
Google Group.
To unsubscribe, send an email to [EMAIL PROTECTED]
More information about Crypto++ and this group is available at
http://www.cryptopp.com.
-~----------~----~----~----~------~----~------~--~---
