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Re: GRUB and boot partition

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On 2018-01-02 02:35 PM, Pascal Hambourg wrote:
> Le 02/01/2018 à 02:29, microsoft gaofei a écrit :
>> So AES is very lightweight ? I thought cryptography takes very much 
>> space , but I saw 1MB space is plenty for AES
>
> What are you talking about ? Where did you see this ? It does not make 
> sense. Encryption does not require extra space (except for header and 
> block padding). Encrypted data have the same size of cleartext data.
>
Encryption is similar in concept to compression. It could even reduce 
the space requirements.

Encryption and compression both work by replacing strings of letters 
with something else. What we call clear text, for example, is just a 
Caesar cipher where each letter is replaced by a number (its ASCII code 
or unicode). Morse code, on the other hand, replaces common letters with 
shorter sequences of dots and dashes than less common letters.

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Re: GRUB and boot partition Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-01-02 20:40 +0100
  Re: GRUB and boot partition Gary Dale <garydale@torfree.net> - 2018-01-03 15:50 +0100
    Re: GRUB and boot partition David Christensen <dpchrist@holgerdanske.com> - 2018-01-03 20:10 +0100
      Re: GRUB and boot partition Gary Dale <garydale@torfree.net> - 2018-01-05 16:30 +0100
        Re: GRUB and boot partition Richard Hector <richard@walnut.gen.nz> - 2018-01-06 13:10 +0100

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