diff --git a/tf_fuzz/utility/compute.hpp b/tf_fuzz/utility/compute.hpp
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+++ b/tf_fuzz/utility/compute.hpp
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+/*
+ * Copyright (c) 2019-2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#ifndef COMPUTE_HPP
+#define COMPUTE_HPP
+
+#include <cstdlib>
+
+using namespace std;
+
+/* Arguably at least, this LFSR-based hashing code is run more commonly on the
+   target itself -- included in the generated code -- than it is run here.
+   However, it's available here too, such as to parallel-calculate expected hash
+   values. */
+
+class crc32
+{
+public:
+    void seed_lfsr (uint32_t init_value);
+    /* lfsr_1b() performs one shift of the LFSR, factoring in a single bit of info,
+       that single bit must be in the low-order bit of the parameter. */
+    uint32_t lfsr_1b (uint32_t a_bit);
+    // crc() has two overloadings, calculating the CRC for byte or word quantities:
+    uint32_t crc (uint8_t a_byte);
+    uint32_t crc (uint16_t a_halfword);
+    uint32_t crc (uint32_t a_word);
+    crc32 (void);
+private:
+    const uint32_t polynomial = 0xb4bcd35c;
+    uint32_t shift_reg;
+};
+
+#endif /* COMPUTE_HPP */