Re: 3DES versus SHA-1

From: strange@nsk.no-ip.org
Date: 07/09/02 

Date: Tue, 9 Jul 2002 16:47:43 +0100
From: strange@nsk.no-ip.org
To: SECURITY-BASICS@securityfocus.com

On Mon, Jul 08, 2002 at 12:56:54PM -0700, Mario Behring wrote:
> Hi all,
>
> The purpose is to transfer data between sites securely using emails, HTTP,
> FTP, IP (LAN/WAN), etc.
>
> Which algorithm should I use: 3DES or SHA-1 ?
>

3DES or both, never only SHA-1.

3DES is a block cipher while SHA-1 is a message digest algorithm, so you
should sign the data with SHA-1 and encrypt it with 3DES (or Blowfish,
Twofish, AES, etc.).

Regards,
Luciano Rocha

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