Function identify_hasher

django/contrib/auth/hashers.py:173–192

Return an instance of a loaded password hasher. Identify hasher algorithm by examining encoded hash, and call get_hasher() to return hasher. Raise ValueError if algorithm cannot be identified, or if hasher is not loaded.

(encoded)

def identify_hasher(encoded):
    """
    Return an instance of a loaded password hasher.

    Identify hasher algorithm by examining encoded hash, and call
    get_hasher() to return hasher. Raise ValueError if
    algorithm cannot be identified, or if hasher is not loaded.
    """
    # Ancient versions of Django created plain MD5 passwords and accepted
    # MD5 passwords with an empty salt.
    if (len(encoded) == 32 and "$" not in encoded) or (
        len(encoded) == 37 and encoded.startswith("md5$$")
    ):
        algorithm = "unsalted_md5"
    # Ancient versions of Django accepted SHA1 passwords with an empty salt.
    elif len(encoded) == 46 and encoded.startswith("sha1$$"):
        algorithm = "unsalted_sha1"
    else:
        algorithm = encoded.split("$", 1)[0]
    return get_hasher(algorithm)


def mask_hash(hash, show=6, char="*"):