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# auth (kernel v11.0.3)

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This module is deprecated. See each function for what to use instead.

Erlang network authentication server.

For a description of the Magic Cookie system, refer to Distributed Erlang in the Erlang Reference Manual.

## Summary

### Types

cookie()

### Functions

cookie() deprecated

Use `erlang:get_cookie()` in ERTS instead.

cookie(TheCookie) deprecated

Use `erlang:set_cookie(node(), Cookie)` in ERTS instead.

is_auth(Node) deprecated

Returns `yes` if communication with `Node` is authorized.

node_cookie([Node, Cookie]) deprecated

Equivalent to `node_cookie(Node, Cookie)`.

node_cookie(Node, Cookie) deprecated

Sets the magic cookie of `Node` to `Cookie` and verifies the status of the authorization.

## Types

# cookie()

(not exported)

    -type cookie() :: atom().

## Functions

# cookie()

This function is deprecated. auth:cookie/0 is deprecated; use erlang:get_cookie/0 instead.

    -spec cookie() -> Cookie when Cookie :: cookie().

Use `erlang:get_cookie()` in ERTS instead.

# cookie(TheCookie)

This function is deprecated. auth:cookie/1 is deprecated; use erlang:set_cookie/2 instead.

    -spec cookie(TheCookie) -> true when TheCookie :: Cookie | [Cookie], Cookie :: cookie().

Use `erlang:set_cookie(node(), Cookie)` in ERTS instead.

# is_auth(Node)

This function is deprecated. auth:is_auth/1 is deprecated; use net_adm:ping/1 instead.

    -spec is_auth(Node) -> yes | no when Node :: node().

Returns `yes` if communication with `Node` is authorized.

Use `net_adm:ping(Node)` instead.

Notice that a connection to `Node` is established in this case. Returns `no` if `Node` does not exist or communication is not authorized (it has another cookie than `auth` thinks it has).

# node_cookie([Node, Cookie])

This function is deprecated. auth:node_cookie/1 is deprecated; use erlang:set_cookie/2 and net_adm:ping/1 instead.

    -spec node_cookie(Cookies :: [node() | cookie(), ...]) -> yes | no.

Equivalent to `node_cookie(Node, Cookie)`.

# node_cookie(Node, Cookie)

This function is deprecated. auth:node_cookie/2 is deprecated; use erlang:set_cookie/2 and net_adm:ping/1 instead.

    -spec node_cookie(Node, Cookie) -> yes | no when Node :: node(), Cookie :: cookie().

Sets the magic cookie of `Node` to `Cookie` and verifies the status of the authorization.

Equivalent to calling `erlang:set_cookie(Node, Cookie)`, followed by `auth:is_auth(Node)`.