Script for downloading and combining the chapters of “Ηandbook of applied cryptography” to one pdf file

hac.bash

#!/bin/bash

# downloads all chapters of “handbook of applied cryptography”
# (<http://www.cacr.math.uwaterloo.ca/hac/>) and combines them into one pdf file.
# The resulting file can not be distributed and is only for personal use, as
# per the copyright notice at
# <http://www.cacr.math.uwaterloo.ca/hac/about/copyright-notice.html>.
# Requires ghostscript.

TEMPDIR="/tmp"

# download all chapters
for i in chap{1..15} index references appendix ; do
    wget http://www.cacr.math.uwaterloo.ca/hac/about/${i}.pdf
done

# remove the first page from all chapters so page numbers will be correct
for i in *.pdf ; do
    gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dFirstPage=2 \
       -sOutputFile=${TEMPDIR}/_${i} $i
done

# combine all chapters to one pdf file
gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite \
   -sOUTPUTFILE=handbook_of_applied_cryptography.pdf \
   ${TEMPDIR}/_chap?.pdf ${TEMPDIR}/_chap??.pdf ${TEMPDIR}/_appendix.pdf \
   ${TEMPDIR}/_references.pdf ${TEMPDIR}/_index.pdf