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 13:42:03 -0400
Sorry I was cut and paste challenged on this item.. I updated the text to
cover the 10 to the x power references in the text below.
Lewis
On 6/30/05 1:28 PM, "Lewis Bean" <email@hidden> wrote:
>> From Apple's website..
>>
> AES gives you 3.4 x 10 to the 38th 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 10 to the 16th possible DES keys. Thus, there
> are on the order of 10 to 21st 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
>>
>> _______________________________________________ Do not post admin requests to
>> the list. They will be ignored. Fed-talk mailing list
>> (email@hidden) Help/Unsubscribe/Update your Subscription:
>>
>> This email sent to email@hidden
>>
> _______________________________________________ Do not post admin requests to
> the list. They will be ignored. Fed-talk mailing list
> (email@hidden) Help/Unsubscribe/Update your Subscription:
>
> This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Fed-talk mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden