Aes brute force when part of data known

Asked Mar 11 '19 at 20:57

Active Mar 11 '19 at 20:57

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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 '19 at 20:57

Keystone

1

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. – kelalaka Mar 11 '19 at 20:59
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More duplicates: https://crypto.stackexchange.com/q/58656 https://crypto.stackexchange.com/q/3832 https://crypto.stackexchange.com/q/41779 https://crypto.stackexchange.com/q/43148 https://crypto.stackexchange.com/q/48397 – Squeamish Ossifrage Mar 11 '19 at 21:44
If there was a "dupe hunter" badge then you'd both be receiving it. – Maarten Bodewes Mar 12 '19 at 00:26

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