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

   1 #!/usr/bin/env bash
   2
   3 die() {
   4     echo $@
   5     exit 1
   6 }
   7
   8 [ "x${SALT}" = "x" ] && die "you must set SALT to the salt."
   9 [ "x${PASS}" = "x" ] && die "you must set PASS to the password"
  10
  11 RET=0
  12 for FILE in "$@"; do
  13     if [[ "${FILE}" = *.nc ]]; then
  14         echo "Not encrypting ${FILE} because its name already ends in .nc"
  15     else
  16         NEW_FILE="${FILE}.nc"
  17         if [ -e "${NEW_FILE}" ]; then
  18             echo "Not encrypting ${FILE} because there is already a ${NEW_FILE}"
  19         else
  20             if openssl enc -aes-256-ecb \
  21                     -S "${SALT}" \
  22                     -k "${PASS}" < "${FILE}" > "${NEW_FILE}"; then
  23                 echo "Created ${NEW_FILE}"
  24             else
  25                 echo "Failed to create ${NEW_FILE}"
  26                 RET=1
  27             fi
  28         fi
  29     fi
  30 done
  31 exit $RET