Using hledger with an Enchive encrypted file

hl.sh

#!/bin/bash

JOURNAL_DIR=~/code/ledger
JOURNAL_PATH=${JOURNAL_DIR}/hledger.journal
ENC_JOURNAL_PATH=${JOURNAL_PATH}.enchive

echo "Decrypting journal file..."
enchive extract $ENC_JOURNAL_PATH
digest_before=$(md5 ${JOURNAL_PATH})

hledger $@ -f $JOURNAL_PATH
hledger bal -f $JOURNAL_PATH

function encrypt_and_close() {
    digest_after=$(md5 ${JOURNAL_PATH})
    if ! [ "$digest_before" == "$digest_after" ]; then
	echo "Encrypting journal file..."
	enchive archive $JOURNAL_PATH
	echo "File has changed, committing to git"
	pushd $JOURNAL_DIR
	git add *.enchive
	git commit -m "$(date)"
	git push origin master
	popd
    fi

    echo "Removing unencrypted journal file..."
    rm $JOURNAL_PATH
}

trap encrypt_and_close EXIT