Re: Doubled-up security??

From: bowgus (bowgus_at_rogers.com)
Date: 01/06/05

  • Next message: rocky: "Re: WTF happened to Tor?" 
    Date: Wed, 5 Jan 2005 19:20:36 -0500

    Exactly ... and that was the "humor" in my original response ... "Why not
    just use one algorithm, 3 times ... wait a minute :-) ... referring to 3DES
    (using 3 keys of 64 bits less the 8 bits parity) is 168 bits.

    <nemo outis@erewhon.com (nemo outis)> wrote in message
    news:J6KCd.700364$nl.161279@pd7tw3no...
    > In article <w1KCd.700323$nl.119542@pd7tw3no>, nemo outis@erewhon.com (nemo
    outis) wrote:
    > >In article <0KSdnWVpS59gwkbcRVn-rA@rogers.com>, "bowgus"
    <bowgus@rogers.com>
    > > wrote:
    > >>If a key length were say 56 bits, and an algorithm was applied say 3
    times,
    > >>then effective key length would be 168 bits.
    > >
    > >
    > >Uhhh, no. 56 bits applied three times would be equivalent to
    > >57.585 bits.
    > >
    > >A 256-bit algorithm (AES, say) is not twice as difficult to crack
    > >as a 128-bit version, but rather 2^128 times as hard!
    > >
    > >Regards,
    > >
    >
    > A clarification:
    >
    > Triple DES, however, uses three separate keys, one for each
    > encryption. In that case doing 56 bit encryption three times
    > DOES result in (effective) 192-bit encryption.
    >
    > Regards,
    >
    >
    >
    >

  • Next message: rocky: "Re: WTF happened to Tor?"

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