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xortool (T)

Python-based XOR analysis tool that estimates key lengths and recovers likely multi-byte keys via frequency analysis.

encoding-decoding
Official docs ↗

Platforms: Web · Last verified September 7, 2026

Python-based XOR analysis tool that estimates key lengths and recovers likely multi-byte keys via frequency analysis.

Only use this tool against systems you own or are explicitly authorized to test — see the disclaimer.

Getting started

Best for: Recovering repeating XOR keys from encoded files. See the official site linked above for details.