module Aws::Checksums

def md5(value)
  if (File === value || Tempfile === value) && !value.path.nil? && File.exist?(value.path)
    Base64.encode64(OpenSSL::Digest::MD5.file(value).digest).strip
  elsif value.respond_to?(:read)
    md5 = OpenSSL::Digest::MD5.new
    update_in_chunks(md5, value)
    Base64.encode64(md5.digest).strip
  else
    Base64.encode64(OpenSSL::Digest::MD5.digest(value)).strip
  end
end