Enum ChallengeMethod 

pub enum ChallengeMethod {
    Plain,
    S256,
}

RFC 7636 §4.3’s code_challenge_method.

Variants

Plain

code_challenge = code_verifier, sent as plain.

Permitted by the grammar and by §4.3, but §4.2 says a client capable of S256 MUST use it — plain is only for a client that cannot do better and knows the server accepts it. It provides no protection against an intercepted code, which is the whole point of the mechanism.

S256

BASE64URL-ENCODE(SHA256(ASCII(code_verifier))), sent as S256.

Mandatory To Implement on the server per §4.2, so this is the default.

Implementations

impl ChallengeMethod

pub const fn as_str(self) -> &'static str

The wire spelling: plain or S256.

Trait Implementations

impl Clone for ChallengeMethod

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ChallengeMethod

impl Debug for ChallengeMethod

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ChallengeMethod

fn default() -> Self

Returns the “default value” for a type.

impl Display for ChallengeMethod

fn fmt(&self, formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for ChallengeMethod

impl Hash for ChallengeMethod

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ChallengeMethod

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for ChallengeMethod

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for ChallengeMethod

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for ChallengeMethod