Colin's git trees - cmccabe-bin/blob - enc.sh

   1 #!/usr/bin/env bash
   2
   3 die() {
   4     echo $@
   5     exit 1
   6 }
   7
   8 if [[ "x${PASS}" = "x" ]]; then
   9     read -s -p "enter password: " PASS
  10     echo
  11     read -s -p "re-enter password: " PASS2
  12     [[ ${PASS} == ${PASS2} ]] || die "The passwords did not match."
  13 fi
  14
  15 #[ "x${SALT}" = "x" ] && die "you must set SALT to the salt."
  16 #SALT=$(dd count=1024 if=/dev/random 2>/dev/null |md5sum|sed 's/-//')
  17 #[ $? -ne 0 ] && die "failed to generate SALT"
  18
  19 RET=0
  20 for FILE in "$@"; do
  21     if [[ "${FILE}" = *.nc ]]; then
  22         echo "Not encrypting ${FILE} because its name already ends in .nc"
  23     else
  24         NEW_FILE="${FILE}.nc"
  25         if [ -e "${NEW_FILE}" ]; then
  26             echo "Not encrypting ${FILE} because there is already a ${NEW_FILE}"
  27         else
  28             if openssl enc -aes-256-ecb \
  29                     -salt \
  30                     -k "${PASS}" < "${FILE}" > "${NEW_FILE}"; then
  31                 echo "Created ${NEW_FILE}"
  32             else
  33                 echo "Failed to create ${NEW_FILE}"
  34                 RET=1
  35             fi
  36         fi
  37     fi
  38 done
  39 exit $RET