---
name: hash_sha256
kind: function
lang: py
domain: cybersecurity
version: "1.0.0"
purity: pure
signature: "def hash_sha256(data: bytes) -> str"
description: "Calcula el hash SHA-256 de datos binarios. Retorna hex digest."
tags: [hash, sha256, crypto, python]
uses_functions: []
uses_types: []
returns: []
returns_optional: false
error_type: ""
imports: [hashlib]
params:
  - name: data
    desc: "bytes a ser hasheado"
output: "string hexadecimal del hash SHA-256 (64 caracteres)"
tested: false
tests: []
test_file_path: ""
file_path: "python/functions/cybersecurity/cybersecurity.py"
---

## Ejemplo

```python
h = hash_sha256(b"hello")
# "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824"
```

## Notas

Usa hashlib de stdlib. Funcion pura sin side effects. SHA-256 produce un digest de 64 caracteres hexadecimales (256 bits).
