fn_registry/python/functions/cybersecurity/is_base64.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
is_base64	function	py	cybersecurity	1.0.0	pure	def is_base64(s: str) -> bool	Verifica si un string es base64 valido. Acepta base64 estandar y URL-safe. Requiere minimo 4 caracteres.	base64 validation encoding python				false		re base64	false			python/functions/cybersecurity/cybersecurity.py

Ejemplo

is_base64("aGVsbG8=")
# True

is_base64("not!valid")
# False

is_base64("ab")
# False (menos de 4 caracteres)

Notas

Verifica tanto el formato (regex) como que el decode sea exitoso. Util para detectar datos codificados en payloads sospechosos, headers HTTP o parametros de URL.