set prefixWithSpacing [appendArgs $::embedSpacing $::embedPrefix]

  set data [readFile $fileName]
  set beginIndex [string first $prefixWithSpacing $data]

  if {$beginIndex == -1} then {
    set prefixWithSpacing $::embedPrefix
    set beginIndex [string last $prefixWithSpacing $data]
  }

  if {$beginIndex != -1} then {
    set endIndex [string first $::embedSuffix $data \
        [expr {$beginIndex + [string length $prefixWithSpacing]}]]

    if {$endIndex != -1} then {

  #
  catch {certificate_hook phase0}

  #
  # NOTE: The existing embedded certificate, if any, must be
  #       removed prior to signing the (script?) file.
  #
  if {$shouldEmbed && \
      ![info exists no(removeEmbeddedCertificate)]} then {
    removeEmbeddedCertificate $fileName
  }

  #
  # NOTE: If the file is an XML file, assume it is a license
  #       certificate that we need to manually re-sign.
  #

        "added embedded certificate to " $fileType " \"" $fileName \"]
  }

  #
  # HOOK: Script completion.
  #
  catch {certificate_hook phase3}

  #
  # NOTE: Cleanup the external embedded certificate file, if any.
  #
  if {$shouldEmbed} then {
    catch {file delete -force $certificateFile}
  }

  #
  # NOTE: Play nice and cleanup all the variables we created during the
  #       whole the signing process.
  #
  unset -nocomplain fileName vendor embed duration entityType encoding \
      privateKeyFile publicKeyFile importFirst configFileName embedSpacing \