fn_registry/python/functions/cybersecurity/entropy_shannon.md

name, kind, lang, domain, version, purity, signature, description, tags, uses_functions, uses_types, returns, returns_optional, error_type, imports, tested, tests, test_file_path, file_path

name	kind	lang	domain	version	purity	signature	description	tags	uses_functions	uses_types	returns	returns_optional	error_type	imports	tested	tests	test_file_path	file_path
entropy_shannon	function	py	cybersecurity	1.0.0	pure	def entropy_shannon(data: bytes) -> float	Calcula la entropia de Shannon de datos binarios (0-8 bits por byte). Util para detectar datos cifrados o comprimidos.	entropy shannon analysis crypto python				false		math collections	false			python/functions/cybersecurity/cybersecurity.py

Ejemplo

# Datos aleatorios (alta entropia)
entropy_shannon(bytes(range(256)))
# ~8.0

# Datos repetitivos (baja entropia)
entropy_shannon(b"aaaaaaaaaa")
# 0.0

# Texto normal
entropy_shannon(b"hello world")
# ~2.84

Notas

Entropia alta (>7.5) sugiere datos cifrados o comprimidos. Entropia baja (<3) sugiere datos estructurados o repetitivos. Retorna 0.0 para datos vacios.