Here's how to use hashcat to crack a CRC32 hash:
A ZIP file's local header includes CRC32 of the uncompressed data. If the data is missing but the CRC32 is intact, you might recover a small file. For a 16-byte text string, brute force is feasible. hashcat crc32
CRC32 is purely a linear cyclic redundancy check, with no cryptographic complexity. Hashcat cracks CRC32 at terahashes per second on good GPUs. Example: an RTX 4090 can exceed 200 GH/s (200 billion hashes/second). This makes brute-force or exhaustive searches trivial for short inputs. Here's how to use hashcat to crack a
*CRC32 on GPU is not significantly faster than CPU due to lightweight computation and PCIe transfer overhead; CPU often outperforms GPU for CRC32. CRC32 is purely a linear cyclic redundancy check,
Because CRC32 is linear, XORing two files is like XORing their checksums. Mark had reduced the problem to a solvable linear equation over GF(2). But instead of solving it by hand, he let Hashcat brute-force the 8,192-bit solution space. It was a job of pure, brute-force algebra.