From 4711eedf16b9312a6b3207cb8d9a7d416a532b7a Mon Sep 17 00:00:00 2001
From: gjelsoe <36234524+gjelsoe@users.noreply.github.com>
Date: Sat, 16 Nov 2024 17:22:21 +0100
Subject: [PATCH] Create base64_to_hex.py

A little tool for converting base64 PKI Keys to decoded byte that userPrefs.h can understand.
---
 bin/base64_to_hex.py | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 bin/base64_to_hex.py

diff --git a/bin/base64_to_hex.py b/bin/base64_to_hex.py
new file mode 100644
index 000000000..07c559b9e
--- /dev/null
+++ b/bin/base64_to_hex.py
@@ -0,0 +1,33 @@
+import sys
+import base64
+
+def base64_to_hex_string(b64_string):
+    try:
+        # Decode the Base64 string to raw bytes
+        decoded_bytes = base64.b64decode(b64_string)
+    except Exception as e:
+        raise ValueError(f"Invalid Base64 input: {e}")
+    
+    # Check if the decoded result is exactly 32 bytes
+    if len(decoded_bytes) != 32:
+        raise ValueError("Decoded Base64 input must be exactly 32 bytes.")
+    
+    # Convert each byte to its hex representation
+    hex_values = [f"0x{byte:02x}" for byte in decoded_bytes]
+    
+    # Join the formatted hex values with commas
+    formatted_output = "{ " + ", ".join(hex_values) + " };"
+    return formatted_output
+
+if __name__ == "__main__":
+    # Check if a Base64 string was provided in command line arguments
+    if len(sys.argv) != 2:
+        print("Usage: python script.py <base64-string>")
+        sys.exit(1)
+    
+    b64_string = sys.argv[1]
+    try:
+        formatted_hex = base64_to_hex_string(b64_string)
+        print(formatted_hex)
+    except ValueError as e:
+        print(e)