python - Django 密码以什么格式存储在数据库中？

Question

你知道 django 密码是如何存储的:

sha1$a1976$a36cc8cbf81742a8fb52e221aaeab48ed7f58ab4

这就是“hashtype $salt $hash”。我的问题是，他们如何获得 $hash？是密码和盐组合然后散列还是完全是别的东西？

Answer 1

一如既往，使用源代码:

# root/django/trunk/django/contrib/auth/models.py
# snip
def get_hexdigest(algorithm, salt, raw_password):
    """
    Returns a string of the hexdigest of the given plaintext password and salt
    using the given algorithm ('md5', 'sha1' or 'crypt').
    """
    raw_password, salt = smart_str(raw_password), smart_str(salt)
    if algorithm == 'crypt':
        try:
            import crypt
        except ImportError:
            raise ValueError('"crypt" password algorithm not supported in this environment')
        return crypt.crypt(raw_password, salt)

    if algorithm == 'md5':
        return md5_constructor(salt + raw_password).hexdigest()
    elif algorithm == 'sha1':
        return sha_constructor(salt + raw_password).hexdigest()
    raise ValueError("Got unknown password algorithm type in password.")

正如我们所见，密码摘要是通过使用选定的散列算法将盐与密码连接起来制成的。然后将算法名称、原始盐和密码哈希连接起来，用“$”分隔以形成摘要。

# Also from root/django/trunk/django/contrib/auth/models.py
def check_password(raw_password, enc_password):
    """
    Returns a boolean of whether the raw_password was correct. Handles
    encryption formats behind the scenes.
    """
    algo, salt, hsh = enc_password.split('$')
    return hsh == get_hexdigest(algo, salt, raw_password)

为了验证密码，django 只是验证相同的盐和相同的密码会产生相同的摘要。