Add PikaBot variant of mul21_add

algorithms/mul21_add_seed_8952.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+
+DESCRIPTION = "MULTIPLY 0x21 and ADD (seed 8952), used in PikaBot in February 2024"
+# 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 = 0xDD4DE543
+
+
+def hash(data):
+    h = 8952
+    for c in data:
+        if c > 96:
+            c -= 0x20
+        h = (c + 0x21*h) & 0xFFFFFFFF
+    return h