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The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:18:28
Dutra de Lacerda (dulac@ip.pt)
Sun, 28 Feb 1999 19:03:37 +0000
At 11:41 26-02-1999 -0800, you wrote:
>I am implementing a client/serverbased application intended to run over
>public networks, and I need to use some form of encrytion to secure the
>data stream.
You'll need to adapt it to a stream, wich is easy, or use a stream cipher.
Do NOT use a block cipher, like Blowfish, as is. Use it in one of the several
secure modes available in order to avoid block similarities.
>I also dont have a lot of financial resources, and I am
>not a mathemetician/cryptographer.... This means I need an inexpensive
>third party toolkit to do the encryption for me, and the most cost
>effective one I have found uses the Blowfish algorithm.
There are public versions of Blowfish in both 'ANSI-C' and 'Borland Pascal'.
They are as free as the cipher method thay are based in.
>So I am wondering what the general opinions on the effectiveness of
>Blowfish is, and also, has anyone out there had anyexperience with the
>people at http://www.encryption.com ??
The cat is hidden but the tail is visible.
You better adapt public code to your application.
Regards,
Dutra de Lacerda.
P.S. - If you need security but not at such high degree as Blowfish consider
the TEA cipher. Goto <http://vader.brad.ac.uk/tea/tea.shtml> to get the code.
It's not the best but it has the higher (security/programming_easyness) ratio
of all ciphers.
- - -
Antonio Manuel Melo de Carvalho Dutra de Lacerda
Morada : Rua Rodrigues Cabrilho, 5 - 5 Esq.
1400 Lisboa, PORTUGAL
Telefone : +351-(1)-3013579
FAX & BBS : +351-(1)-3021098
The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:18:28