than MD5. It is designed to work at the "RAM speed limit," meaning the CPU processes data as fast as the memory can supply it. Reliability
| Feature | MD5 (Message Digest Algorithm 5) | xxHash (specifically xxHash64) | | :--- | :--- | :--- | | | Cryptographic Security (now broken) | Extreme Speed / Non-Cryptographic | | Speed | Moderate (Bound by CPU security math) | Insanely Fast (RAM speed bottleneck) | | Collision Resistance | Broken (Easy to engineer collisions) | Low (Not designed for security) | | Output Size | 128-bit | 64-bit (or 128-bit in xxh3) | | Randomness | Excellent distribution | Good distribution | | Best Use Case | Legacy compatibility, non-security IDs | File integrity, Hash Tables, Caching | xxhash vs md5
If you are hashing user-uploaded files or data that could be manipulated by an attacker to bypass a check, do not use MD5 or xxHash. Use SHA-256 or BLAKE3 . than MD5
start = time.time() xxh_hash = xxhash.xxh64(data).hexdigest() xxh_time = time.time() - start print(f"xxHash: xxh_hash in xxh_time:.2f seconds") Use SHA-256 or BLAKE3
: It makes no attempt to resist malicious attacks. It is designed to be a "fast and reliable" way to detect accidental data corruption, not a shield against hackers.
When developers need to pick a hashing algorithm, two names frequently enter the ring: (Message Digest Algorithm 5) and xxHash (Extremely eXtreme Hash).