1994-04-17 - Table of Key Lengths and Brute Force Cracking Times

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From: hughes@ah.com (Eric Hughes)
To: cypherpunks@toad.com
Message Hash: dce2eab3d801f85ac1ccdbcf7d8eb68892c379e757d5451d6228ebf17e0cd0d0
Message ID: <9404170419.AA28890@ah.com>
Reply To: <199404170145.SAA28011@mail.netcom.com>
UTC Datetime: 1994-04-17 04:27:28 UTC
Raw Date: Sat, 16 Apr 94 21:27:28 PDT

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From: hughes@ah.com (Eric Hughes)
Date: Sat, 16 Apr 94 21:27:28 PDT
To: cypherpunks@toad.com
Subject: Table of Key Lengths and Brute Force Cracking Times
In-Reply-To: <199404170145.SAA28011@mail.netcom.com>
Message-ID: <9404170419.AA28890@ah.com>
MIME-Version: 1.0
Content-Type: text/plain


>First, some typical key lengths for block ciphers, as reported by
>Schneier:

[table omitted]

>No
>mention of RC4, which may in "exportable" versions may be as short as
>40-45 bits.

RC4 is a stream cipher, and thus not in the table of block ciphers.

Eric

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• 1994-04-17 (Sat, 16 Apr 94 18:44:25 PDT) - Table of Key Lengths and Brute Force Cracking Times - tcmay@netcom.com (Timothy C. May)
  • 1994-04-17 (Sat, 16 Apr 94 21:27:28 PDT) - Table of Key Lengths and Brute Force Cracking Times - hughes@ah.com (Eric Hughes)