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 fi
  11
  12 #[ "x${SALT}" = "x" ] && die "you must set SALT to the salt."
  13 #SALT=$(dd count=1024 if=/dev/random 2>/dev/null |md5sum|sed 's/-//')
  14 #[ $? -ne 0 ] && die "failed to generate SALT"
  15
  16 RET=0
  17 for FILE in "$@"; do
  18     if [[ "${FILE}" = *.nc ]]; then
  19         echo "Not encrypting ${FILE} because its name already ends in .nc"
  20     else
  21         NEW_FILE="${FILE}.nc"
  22         if [ -e "${NEW_FILE}" ]; then
  23             echo "Not encrypting ${FILE} because there is already a ${NEW_FILE}"
  24         else
  25             if openssl enc -aes-256-ecb \
  26                     -salt \
  27                     -k "${PASS}" < "${FILE}" > "${NEW_FILE}"; then
  28                 echo "Created ${NEW_FILE}"
  29             else
  30                 echo "Failed to create ${NEW_FILE}"
  31                 RET=1
  32             fi
  33         fi
  34     fi
  35 done
  36 exit $RET