Enum EncScheme 

pub enum EncScheme {
    Cenc,
    Cens,
    Cbc1,
    Cbcs,
}

A CENC protection scheme (the schm scheme_type).

Variants

Cenc

cenc — AES-128 CTR, (sub)sample encryption.

Cens

cens — AES-128 CTR with pattern encryption.

Cbc1

cbc1 — AES-128 CBC, full-region (sub)sample encryption.

Cbcs

cbcs — AES-128 CBC, pattern encryption (Apple FairPlay friendly).

Implementations

impl Scheme

pub fn scheme_type(self) -> [u8; 4]

The four-character scheme type written into the schm box.

pub fn is_cbc(self) -> bool

CBC-based schemes (cbc1, cbcs); the others are CTR (cenc, cens). Non-pattern CBC requires 16-byte-aligned protected subsample ranges.

pub fn is_pattern(self) -> bool

Pattern-capable schemes (cens, cbcs) — written with a version-1 tenc carrying the crypt/skip block counts.

pub fn uses_constant_iv(self) -> bool

cbcs reuses one constant IV for every sample; the others derive a unique per-sample IV.

Trait Implementations

impl Clone for Scheme

fn clone(&self) -> Scheme

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Scheme

impl Debug for Scheme

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

Formats the value using the given formatter.

impl Eq for Scheme

impl PartialEq for Scheme

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Scheme