Script shell pour crypter et décrypter (avec passphrase) facilement utilisant gpg [v1]

Pour chiffrer...

#!/bin/sh

FROM="$1"
TMP="`mktemp /tmp/crypt.$$.XXXXXX`" || exit 1
OUT="`dirname "$FROM"`/`basename "$FROM"`.crypted"
if [ ! -f "$OUT" ]
then
        gpg --symmetric --armor < "$FROM" > "$TMP"
        if [ $? -ne 0 ]
        then
                rm -- "$TMP"
                exit 1
        fi
        mv -- "$TMP" "$OUT"
        echo "OK, crypted file $OUT."
else
        rm -- "$TMP"
        echo "FAILED, crypted file already exists $OUT."
fi

Pour déchiffrer...

#!/bin/sh

FROM="$1"
TMP="`mktemp /tmp/decrypt.$$.XXXXXX`" || exit 1

if [ "`basename $FROM .crypted`" != "`basename $FROM`" ]
then
        OUT="`dirname "$FROM"`/`basename "$FROM" .crypted`"
else
        OUT="`dirname "$FROM"`/`basename "$FROM"`.decrypted"
fi

if [ ! -f "$OUT" ]
then
        gpg --decrypt "$FROM" > "$TMP"
        if [ $? -ne 0 ]
        then
                rm -- "$TMP"
                exit 1
        fi
        mv -- "$TMP" "$OUT"
        echo "OK, crypted file $OUT."
else
        rm -- "$TMP"
        echo "FAILED, crypted file already exists $OUT."
fi