#1 2015-01-27 12:55:45

M0V
Member
Registered: 2015-01-27
Posts: 10

AES with SHA512

Should we expect SHA512 for AES ?

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#2 2015-01-27 13:06:55

ab
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From: France
Registered: 2010-06-21
Posts: 14,183
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Re: AES with SHA512

Do you need such a high level?
Is not SHA-256 enough?
SHA-256 is perfect for AES-256, since the 256 key size does match the highest possible key size defined by AES.
And mathematically, 256 bits is enough at least for the next decades.
Computing a SHA-512 then later on reducing it to 256 bits would not make sense.
See http://crypto.stackexchange.com/a/20258

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#3 2015-01-27 17:30:44

M0V
Member
Registered: 2015-01-27
Posts: 10

Re: AES with SHA512

thanks for your explanation

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