bash short-cuts for file encryption

encrypt.sh

#
# Simple commandline encryption aliases for OSX. 
# Put this in your .bash_profile
#
# encrypt myfile 
#   takes your password, encrypts myfile to myfile.enc, 
#   writes some random data into myfile and then deletes it
#
# decrypt myfile.enc
#   takes your passowrd, decrypts to myfile, 
#   and removes myfile.enc
#

do_encrypt() {
if [ -f $1 ]; then
  openssl aes-256-cbc -salt -in $1 -out $1.enc
  sz=`stat -f%z $1`
  if [ $? -eq 0 ]; then
    head -c $sz < /dev/random > $1
    /bin/rm $1
  fi
fi
}

do_decrypt() {
if [ -f $1 ]; then
  bn=`basename $1 .enc`
  if [ $bn == $1 ]; then
    bn=$1.plain
  fi
  openssl aes-256-cbc -d -in $1 -out $bn
  if [ $? -eq 0 ]; then
    /bin/rm $1
  fi
fi
}

alias encrypt=do_encrypt
alias decrypt=do_decrypt