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Full Discussion: Programming serial port
Top Forums Programming Programming serial port Post 302258715 by jim mcnamara on Saturday 15th of November 2008 01:02:56 PM
Old 11-15-2008
You need to do soime reading. This is the best guide out there for POSIX serial port programming:

Serial Programming Guide for POSIX Operating Systems - Michael R Sweet
 

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EFIKEYGEN(1)						      General Commands Manual						      EFIKEYGEN(1)

NAME
efikeygen - command line tool for generating keys to use for PE image signing SYNOPSIS
efikeygen <[--ca | -C] [--self-sign | -S] | [--signer=nickname]> [--token=token | -t token] [--nickname=nickname | -n nickname] [--common-name=common name | -c common name] [--url=url | -u url] [--serial=serial | -s serial] DESCRIPTION
efikeygen is a command line tool for generating keys and certificates to be used with pesign. These are standard X.509 certificates, and can potentially be generated with any certificate creation tool. efikeygen simply sets generates keys with sensible options set for a key to be used for PE image signing. OPTIONS
--ca The certificate being generated is for a CA. --self-sign The generated certificate is to be self signed. --signer=nickname Nickname of certificate to be used to sign the generated certificate. --token=token Use the specified NSS token's certificate database. --nickname=nickname The nickname to use for the generated certificate. --common-name=common-name The X.509 Common Name for the generated certificate. This should be in rfc2253 syntax, i.e. "CN=John Doe,OU=editing,O=New York Times,L=New York,ST=NY,C=US" --url=url Informational url regarding objects signed with this key. --serial=serial number Serial number for use with this key. A certificate is identified by its signer and its serial number, so it's best not to ever re- use this value with the same signer. SEE ALSO
pesign(1) AUTHORS
Peter Jones Mon Jan 07 2013 EFIKEYGEN(1)
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