diff options
Diffstat (limited to 'package/base-files/files')
| -rwxr-xr-x | package/base-files/files/lib/functions.sh | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh index 860fc04510..81176431d1 100755 --- a/package/base-files/files/lib/functions.sh +++ b/package/base-files/files/lib/functions.sh @@ -17,6 +17,22 @@ NO_EXPORT=1 LOAD_STATE=1 LIST_SEP=" " +# xor multiple hex values of the same length +xor() { + local val + local ret="0x$1" + local retlen=${#1} + + shift + while [ -n "$1" ]; do + val="0x$1" + ret=$((ret ^ val)) + shift + done + + printf "%0${retlen}x" "$ret" +} + append() { local var="$1" local value="$2" |