Struct Extensions 

#[non_exhaustive]
pub struct Extensions {
    pub basic_constraints: Option<BasicConstraints>,
    pub key_usage: Option<KeyUsage>,
    pub extended_key_usage: Option<Vec<u32>>,
    pub subject_key_identifier: Option<KeyIdentifier>,
    pub authority_key_identifier: Option<KeyIdentifier>,
}

Decoded certificate extensions.

#[non_exhaustive]: the spec (§6.5.4) defines exactly five extensions today, but marking this prevents a future spec-driven addition from being a semver-breaking change for downstream crates. Outside matter-cert, construct via Extensions::builder (or Extensions::default) rather than a struct literal.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

basic_constraints: Option<BasicConstraints>

Basic constraints extension, if present.

key_usage: Option<KeyUsage>

Key usage flags, if present.

extended_key_usage: Option<Vec<u32>>

Extended key usage OID list, if present.

subject_key_identifier: Option<KeyIdentifier>

Subject key identifier (20-byte SHA-1 of public key), if present.

authority_key_identifier: Option<KeyIdentifier>

Authority key identifier (20-byte SHA-1 of issuer public key), if present.

Implementations

impl Extensions

pub fn builder() -> ExtensionsBuilder

Start building an Extensions value.

Because Extensions is #[non_exhaustive], downstream crates cannot build it with a struct literal; this builder is the supported path. Unset fields default to None.

Trait Implementations

impl Clone for Extensions

fn clone(&self) -> Extensions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Extensions

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

Formats the value using the given formatter.

impl Default for Extensions

fn default() -> Extensions

Returns the “default value” for a type.

impl Eq for Extensions

impl PartialEq for Extensions

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Extensions