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