Re: [Fed-Talk] File Vault and AES128
Re: [Fed-Talk] File Vault and AES128
- Subject: Re: [Fed-Talk] File Vault and AES128
- From: Lewis Bean <email@hidden>
- Date: Thu, 30 Jun 2005 13:28:55 -0400
>From Apple's website..
AES gives you 3.4 x 1038 possible 128-bit keys. In comparison, the Digital
Encryption Standard (DES) keys are a mere 56 bits long, which means there
are approximately 7.2 x 1016 possible DES keys. Thus, there are on the order
of 1021 times more possible AES 128-bit keys than DES 56-bit keys. Assuming
that one could build a machine that could recover a DES key in a second, it
would take that machine approximately 149 trillion years to crack a 128-bit
AES key.
(To put that into perspective, the universe is believed to be less than 20
billion years old.)
Lewis Bean
Apple Technical Sales Consultant
888-205-2387
GTSI.com
On 6/30/05 1:01 PM, "Michael Pike" <email@hidden> wrote:
> How secure is it? 128bit does not sound that secure to me,
> especially when email encryption goes up to 2048 bit.
>
> If I have files of a top secret nature, is AES128 uncrackable? I do
> not worry about my passphrase for logging in (and I am told that is
> the password used to encrypt for filevault - it's very cryptic. I
> also have just as cryptic of a passphrase for the master password),
> but is there a way to crack what sounds like to be a very small
> cipher (AES128?)
>
> The reason I ask... would it be safer to use something like
> Blowfish? I know AES is the standard for US encryption, but that
> does not necessarily mean is the best available.
>
> thanks,
> mike
>
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