From befdd51df5f622a813aa69f8dd2a0ead7c51fa13 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Fri, 22 Oct 2021 22:04:23 +0200
Subject: initial commit

---
 obfuscate | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100755 obfuscate

diff --git a/obfuscate b/obfuscate
new file mode 100755
index 0000000..d7c9701
--- /dev/null
+++ b/obfuscate
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+alphabets=(
+  $(printf '%s' {0..9})
+  $(printf '%s' {0..9} {a..f})
+  $(printf '%s' -.: {0..9} {a..z} {A..Z})
+)
+
+if [ -n "$1" ]; then
+  regex="$1"
+else
+  regex='.*'
+fi
+
+while IFS=$(printf '=\n') read -r l r; do
+  printf '%s=' "$l"
+  if printf '%s\n' "$l" \
+  | grep -qx "${regex}"; then
+    for alphabet in "${alphabets[@]}"; do
+      printf '%s\n' "$r" \
+      | grep -qx "[${alphabet}:]\+" \
+      && break
+    done
+    for (( i=0; i<${#r}; i++ )); do
+      c="${r:$i:1}"
+      if [ -n "${alphabet%%*${c}*}" ]; then
+        printf '%s' "${c}"
+      else
+        printf '%s' "${alphabet:$(($RANDOM % ${#alphabet})):1}"
+      fi;
+    done
+  else
+    printf '%s' "$r"
+  fi
+  printf '\n'
+done
-- 
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