From 584ac9f00e94cbcf45dfbfd82801aae0d63dcfc5 Mon Sep 17 00:00:00 2001
From: wum0 <12880918+wum0@users.noreply.github.com>
Date: Sun, 4 May 2025 01:46:43 +0800
Subject: [PATCH] Create brc4_1_4_5.py

---
 algorithms/brc4_1_4_5.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 algorithms/brc4_1_4_5.py

diff --git a/algorithms/brc4_1_4_5.py b/algorithms/brc4_1_4_5.py
new file mode 100644
index 0000000..6dfb8c3
--- /dev/null
+++ b/algorithms/brc4_1_4_5.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+
+DESCRIPTION = "Hash algorithm used in BRC4 1.4.5"
+# Type can be either 'unsigned_int' (32bit) or 'unsigned_long' (64bit)
+TYPE = 'unsigned_int'
+# Test must match the exact hash of the string 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
+TEST_1 = 3471553803
+
+
+def hash(data):
+    result = 0
+    for c in data:
+        temp = 2049 * result
+        temp |= 0x2800000 
+        temp += c
+        result = temp & 0xFFFFFFFF
+    
+    return result