Enum MetadataKind 

#[non_exhaustive]
pub enum MetadataKind {
    Location,
    DeviceIdentity,
    PersonalIdentity,
    SoftwareFingerprint,
    Timestamp,
    Thumbnail,
    EditingHistory,
    DocumentIdentifier,
    ColourProfile,
    Comment,
    Other,
}

What kind of identifying information an item represents.

These categories mirror docs/THREAT_MODEL.md §3 so that a user can connect what strypt reports to what the threat model claims it protects against.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Location

GPS coordinates, altitude, bearing — anything that places the file.

DeviceIdentity

Camera make, model, lens, and body serial numbers. Serial numbers link every file a device ever produced, so one missed image can retroactively deanonymise an archive.

PersonalIdentity

Author, creator, last-modified-by, organisation, registered owner.

SoftwareFingerprint

Producing application and version.

Timestamp

Creation and modification times.

Thumbnail

Embedded thumbnails and previews, which survive cropping and visual redaction of the main image — a “redacted” photograph can carry an unredacted copy of itself.

EditingHistory

Revision identifiers, editing-cycle counts, total editing time, tracked changes.

DocumentIdentifier

An identifier that stays stable across saves and copies of one document — a PDF file identifier, an XMP DocumentID. It names nobody, and it links every copy and every revision of the document to each other, which for a leaked draft is the whole question.

ColourProfile

Embedded ICC colour profiles, which frequently carry a device or vendor name.

Comment

Free-text comments.

Other

Recognised as metadata, but not in any category above.

Implementations

impl MetadataKind

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

The stable lowercase identifier used in JSON output.

pub const fn sensitivity(self) -> Sensitivity

How much this kind of item typically matters, used by front-ends for ordering and emphasis.

Trait Implementations

impl Clone for MetadataKind

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 MetadataKind

impl Debug for MetadataKind

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

Formats the value using the given formatter.

impl Eq for MetadataKind

impl Hash for MetadataKind

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 MetadataKind

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 MetadataKind

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for MetadataKind

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 MetadataKind