nevermined_sdk_py.nevermined.auth module

class nevermined_sdk_py.nevermined.auth.Auth(keeper, storage_path)

Bases: object

Nevermined auth class. Provide basic management of a user auth token. This token can be used to emulate sign-in behaviour. The token can be stored and associated with an expiry time. This is useful in front-end applications that interact with a 3rd-party wallet apps. The advantage of using the auth token is to reduce the number of confirmation prompts requiring user action.

The auth token works with a provider service such as Gateway which also uses this ocean module to handle auth tokens.

Token format is “signature-timestamp”.

DEFAULT_EXPIRATION_TIME = 2592000

DEFAULT_MESSAGE = 'Nevermined Protocol Authentication'

check(token)

Parameters

token – hex str consist of signature and timestamp

Returns

hex str ethereum address

get(account)

Parameters

account – Account instance signing the token

Returns

hex str the token generated/signed by account

is_stored(account)

Parameters

account – Account instance

Returns

bool whether this account has a stored token

static is_token_valid(token)

restore(account)

Parameters

account – Account instance to fetch the saved token

Returns

hex str the token retreived from storage None if no token found for this account

store(account)

Parameters

account – Account instance signing the token

Returns

token that was generated and stored for this account