diff --git a/hash_submissions.py b/hash_submissions.py
new file mode 100644
index 0000000..4472232
--- /dev/null
+++ b/hash_submissions.py
@@ -0,0 +1,39 @@
+import os, sys
+from datetime import datetime
+import csv
+import hashlib
+
+
+def hash_files_in_dir(dir_path: str, csv_suffix: str):
+    os.makedirs('csv', exist_ok=True)
+    csv_file_name = f'file_hashes_{csv_suffix}_{datetime.now().strftime("%Y%m%d-%H%M%S")}.csv'
+    csv_file = os.path.join('csv', csv_file_name)
+
+    with open(csv_file, 'w', newline='') as csvfile:      # Open the output CSV file for writing
+        fieldnames = ['Student ID', 'file', 'sha256 hash']
+        writer = csv.DictWriter(csvfile, fieldnames=fieldnames)
+        writer.writeheader()
+        
+        for subdir, dirs, files in os.walk(dir_path):  # Loop through all files in the directory and generate hashes
+            for file in files:
+                if 'README.md' not in file:
+                    directories = [d for d in os.path.abspath(subdir).split(os.path.sep)]  # list of directories in the file path
+
+                    student_id = directories[directories.index(csv_suffix)+1]  # use the index of 'csv_suffix' which is the gradebook name, and get the next directory which is the student id 
+                    filepath = os.path.join(subdir, file)
+                    with open(filepath, 'rb') as f:
+                        filehash = hashlib.sha256(f.read()).hexdigest()
+                        writer.writerow({'Student ID': student_id, 'file': filepath, 'sha256 hash': filehash})
+
+
+def main():
+    submissions_dir_name = ' '.join(sys.argv[1:]) if len(sys.argv) > 1 else exit(f'\nNo submissions dir name given. Provide the name as an argument.\n\nUsage: python {sys.argv[0]} [submissions dir name]\n')
+    submissions_dir = os.path.join('BB_submissions', submissions_dir_name)  # dir with extracted submissions
+    if os.path.isdir(submissions_dir):
+        hash_files_in_dir(submissions_dir, submissions_dir_name)
+    else:
+        exit(f'Directory {submissions_dir} does not exist.\nMake sure "{submissions_dir_name}" exists in "BB_submissions".')
+
+
+if __name__ == '__main__':    
+    main()
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