CAST self-decrypting archive; RC6

From: RPK (webmaster_at_hypercypher.zzn.com)
Date: 02/29/04 

Date: 28 Feb 2004 21:13:33 -0800

Why CAST-128 is mostly used for creating self-decrypting archives?
I heard of CAST5 previously, what is the difference?
Many cryptographers had good faith in this algorithm, but I did not
see its name in the AES race. Any report of serious weakness found
in it.

Some of the algorithms like RC6 which support 2040-bit keys are often
not seen, whereas RC4 is still popular.

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