Add Script to check for suspicious patterns (#199)

* Create check_keys.sh

* add to workflow

.github/workflows/build-in-docker.yml

@@ -17,6 +17,8 @@ jobs:
     - uses: actions/checkout@v3
       with:
         clean: false
+    - name: Check for suspicious patterns
+      run: /bin/bash suspicious_patterns.sh
     - name: Build using Docker
       run: /bin/bash release-builder.sh
     - name: Unit tests

suspicious_patterns.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# Get the repository's root directory
+repo_root=$(git rev-parse --show-toplevel)
+
+# Get a list of files changed in the last commit with their relative paths
+files_changed=$(git diff --name-only --relative HEAD~1 HEAD)
+
+# Loop through each file and search for the patterns
+for file in $files_changed; do
+  # Construct the absolute path
+  absolute_path="$repo_root/$file"
+
+  # Check if the file exists (it might have been deleted)
+  if [ -f "$absolute_path" ]; then
+    # Search the file for the given patterns
+    grep_output=$(grep -n -E '(([^rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz]|^)(s|p)[rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz]{25,60}([^(]|$)))|([^A-Fa-f0-9](02|03|ED)[A-Fa-f0-9]{64})' "$absolute_path")
+
+    # Check if grep found any matches
+    if [ ! -z "$grep_output" ]; then
+      # Suspicious patterns were found
+      echo "Error: Suspicious patterns were found in $absolute_path."
+      echo "$grep_output"
+      exit 1
+    fi
+  fi
+done
+
+# If the loop completes without finding any suspicious patterns
+echo "Success: No suspicious patterns found in the diff."
+exit 0