ruby-net-ldap/lib/net/ber/core_ext/bignum.rb

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module Net::BER::Extensions::Bignum
##
# Converts a Bignum to an uncompressed BER integer.
def to_ber
result = []
# NOTE: Array#pack's 'w' is a BER _compressed_ integer. We need
# uncompressed BER integers, so we're not using that. See also:
# http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/228864
n = self
while n > 0
b = n & 0xff
result << b
n = n >> 8
end
"\002" + ([result.size] + result.reverse).pack('C*')
end
end