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#!/usr/bin/env ruby
require 'optparse'
require 'openssl'
include OpenSSL
def usage
myname = File::basename($0)
$stderr.puts <<EOS
Usage: #{myname} [--key keypair_file] name
name ... ex. /C=JP/O=RRR/OU=CA/CN=NaHi/emailAddress=nahi@example.org
EOS
exit
end
options = ARGV.getopts(nil, "key:", "csrout:", "keyout:")
keypair_file = options["key"]
csrout = options["csrout"] || "csr.pem"
keyout = options["keyout"] || "keypair.pem"
$stdout.sync = true
name_str = ARGV.shift or usage()
name = X509::Name.parse(name_str)
keypair = nil
if keypair_file
keypair = PKey::RSA.new(File.open(keypair_file).read)
else
keypair = PKey::RSA.new(1024) { putc "." }
puts
puts "Writing #{keyout}..."
File.open(keyout, "w", 0400) do |f|
f << keypair.to_pem
end
end
puts "Generating CSR for #{name_str}"
req = X509::Request.new
req.version = 0
req.subject = name
req.public_key = keypair.public_key
req.sign(keypair, Digest::MD5.new)
puts "Writing #{csrout}..."
File.open(csrout, "w") do |f|
f << req.to_pem
end
puts req.to_text
puts req.to_pem
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