> Does EVP_MAC_CTX_dup() after the MAC context has been initialised
> do what you want? 

Thanks.  Adding a dup/free gets the right answer, but isn't much of a speedup.

Is there a way to copy the critical bits into a working ctx?
I looked in the header file but didn't see anything suspicious.


i5-3570 CPU @ 3.40GHz AES-128-CBC, 48 byte packets
Times in microseconds.

0.339 CMAC
0.676 PKEY
0.236 PKEY preload

0.933 CMAC
1.091 EVP_MAC
0.185 EVP_MAC Preload

0.905 CMAC
0.463 EVP_MAC
0.359 EVP_MAC Preload with dup/free
0.123 EVP_MAC Preload without dup/free, WRONG ANSWER

These are my opinions.  I hate spam.

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