Aes brute force when part of data known [duplicate]

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I have buffer of 16 bytes that encrypt with AES 128 cbc with IV =000000......(all IV is 0)

I have the encrypted buffer, and I know 7 bytes from 16 bytes before the encryption , I dont know the key .

I want to find out the key.

Is that help to find out the key? Less option than 2^128?

asked Mar 11, 2019 at 20:57

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$\begingroup$ Possible duplicate of Is it possible to find the key for AES ECB if I have a list of plaintext and corresponding ciphertext?. If the answer not satisfy you. Lets us know. $\endgroup$
– kelalaka
Commented Mar 11, 2019 at 20:59
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$\begingroup$ More duplicates: crypto.stackexchange.com/q/58656 crypto.stackexchange.com/q/3832 crypto.stackexchange.com/q/41779 crypto.stackexchange.com/q/43148 crypto.stackexchange.com/q/48397 $\endgroup$
– Squeamish Ossifrage
Commented Mar 11, 2019 at 21:44
$\begingroup$ If there was a "dupe hunter" badge then you'd both be receiving it. $\endgroup$
– Maarten Bodewes ♦
Commented Mar 12, 2019 at 0:26

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