Struct ReplicaCtx 

pub struct ReplicaCtx<'a> { /* private fields */ }

A single CRC-valid metadata replica handed to MetadataCodec::unseal.

Exposes the parsed plaintext header, the raw 512-byte block (and the inner encrypted blob / salt / volume id within it), and sector-granular reads of THIS replica’s vendor-specific data region — everything a vendor needs to decide and run its metadata decryption.

Implementations

impl<'a> ReplicaCtx<'a>

pub fn header(&self) -> &JvckHeader

The parsed plaintext header (same for every replica of a volume).

pub fn block(&self) -> &[u8]

The full 512-byte Metadata block (CRC already verified).

pub fn encrypted_metadata(&self) -> &[u8]

The 128-byte EncryptedMetadata blob within the block.

pub fn salt(&self) -> &[u8]

The per-write salt (plaintext) used to derive this replica’s keys.

pub fn volume_id(&self) -> [u8; 16]

The volume id (plaintext) from the header bytes.

pub fn replica_index(&self) -> usize

0-based index of this replica (header replicas first, then footer).

pub fn vendor_data_sector_count(&self) -> u64

Sectors available in this replica’s vendor-specific data region.

pub fn read_vendor_data(&self, rel_sector: u64, buf: &mut [u8]) -> VckResult<()>

Read buf (a whole number of sectors) from THIS replica’s vendor-specific data region, starting at vendor-relative rel_sector.