Trait oxide_auth::primitives::generator::TagGrant

pub trait TagGrant {
    fn tag(&mut self, usage: u64, grant: &Grant) -> Result<String, ()>;
}

Generic token for a specific grant.

The interface may be reused for authentication codes, bearer tokens and refresh tokens.

Requirements on implementations

When queried without repetition (users will change the usage counter each time), this method MUST be indistinguishable from a random function. This should be the crypgraphic requirements for signature schemes without requiring the verification property (the function need no be deterministic). This enables two popular choices: actual signature schemes and (pseudo-)random generators that ignore all input.

The requirement is derived from the fact that one should not be able to derive the tag for another token from ones own. Since there may be multiple tokens for a grant, the usage counter makes it possible for Authorizer and Issuer implementations to differentiate between these.

Required methods

fn tag(&mut self, usage: u64, grant: &Grant) -> Result<String, ()>

For example sign the input parameters or generate a random token.

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Implementations on Foreign Types

impl<'a, T: TagGrant + ?Sized + 'a> TagGrant for Box<T>

fn tag(&mut self, counter: u64, grant: &Grant) -> Result<String, ()>

impl<'a, T: TagGrant + ?Sized + 'a> TagGrant for &'a mut T

fn tag(&mut self, counter: u64, grant: &Grant) -> Result<String, ()>

impl TagGrant for Rc<RandomGenerator>

fn tag(&mut self, _: u64, _: &Grant) -> Result<String, ()>

impl TagGrant for Arc<RandomGenerator>

fn tag(&mut self, _: u64, _: &Grant) -> Result<String, ()>

impl TagGrant for Rc<Assertion>

fn tag(&mut self, counter: u64, grant: &Grant) -> Result<String, ()>

impl TagGrant for Arc<Assertion>

fn tag(&mut self, counter: u64, grant: &Grant) -> Result<String, ()>

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Implementors

impl TagGrant for Assertion

fn tag(&mut self, counter: u64, grant: &Grant) -> Result<String, ()>

impl TagGrant for RandomGenerator

fn tag(&mut self, _: u64, _: &Grant) -> Result<String, ()>

impl<'a> TagGrant for &'a Assertion

fn tag(&mut self, counter: u64, grant: &Grant) -> Result<String, ()>

impl<'a> TagGrant for &'a RandomGenerator

fn tag(&mut self, _: u64, _: &Grant) -> Result<String, ()>

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