> 3DES has an effective keylength of 112 bits.
I don't think so:
A typicall Tripple DES has an effective key length of 112 bits as it uses
two different 56-bit keys A and B:
TrippleDesEncrypt (A, B, X) = DesEncrypt (A, DesDecrypt (B, DesEncrypt (A,
X)))
But the SSL implementation is slightly different from the typical Triple DES
and uses 3 different keys of 8 bytes each (56 bits effective) for a total
effective key length of 168 bits.
Nicolas Roumiantzeff.
-----Message d'origine-----
De : Ben Laurie <[EMAIL PROTECTED]>
À : [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date : jeudi 11 novembre 1999 16:08
Objet : Re: Compiling OpenSSL without 3DES
>Bruno Treguier wrote:
>>
>> Hello,
>>
>> I'm presently trying to get openssl (0.9.4) compiled without 3DES,
because
>> of French regulations which do not allow ciphers using a key length of
>> more than 128 bits. The simplest way seems to get rid of des, as it is
>> supposed to be triggered by simple compile-time options.
>
>Is that true keylength or effective keylength? 3DES has an effective
>keylength of 112 bits.
>
>Cheers,
>
>Ben.
>
>--
>http://www.apache-ssl.org/ben.html
>
>"My grandfather once told me that there are two kinds of people: those
>who work and those who take the credit. He told me to try to be in the
>first group; there was less competition there."
> - Indira Gandhi
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