import hashlib


def sha256_encode(t):
    """Encoder using SHA256.

    >>> sha256_encode("Hola mundo")
    'ca8f60b2cc7f05837d98b208b57fb6481553fc5f1219d59618fd025002a66f5c'
    """
    s = hashlib.sha256(t)
    return s.hexdigest()