OK. I'm convinced environment isn't always safe. I'll redo the options
to allow several choices.

I.e.

1. Command line.
2. Environment.
3. Standard input.

Any other suggestions e.g from a file or fd?

Steve.
-- 
Dr Stephen N. Henson.   http://www.drh-consultancy.demon.co.uk/
Personal Email: [EMAIL PROTECTED] 
Senior crypto engineer, Celo Communications: http://www.celocom.com/
Core developer of the   OpenSSL project: http://www.openssl.org/
Business Email: [EMAIL PROTECTED] PGP key: via homepage.

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