Struct SegmentDigestVerifier 

pub struct SegmentDigestVerifier { /* private fields */ }

Streaming verifier (bit-exact with DigestBuilder).

Implementations

impl SegmentDigestVerifier

pub fn new(alg: DigestAlg, segment_index: u32, frame_count: u32) -> Self

Create a fresh verifier for a new segment. This hashes the segment header (index and frame count) immediately.

pub fn with_state( state: DigestState, segment_index: u32, frame_count: u32, actual: Vec<u8>, ) -> Self

Create a verifier by resuming from an existing hydrated state. Used for frame-level resume within a single segment.

pub fn state(&self) -> DigestState

Returns a clone of the current internal state for checkpointing.

pub fn update_frame(&mut self, frame_index: u32, ciphertext: &[u8])

Feed one DATA frame (strictly ascending frame_index).

pub fn finalize(self) -> Result<Vec<u8>, DigestError>

Finalize and store the actual digest after all frames are processed.

pub fn verify(actual: Vec<u8>, expected: Vec<u8>) -> Result<(), DigestError>

Compare a previously finalized digest against the expected one.