Struct DataMap 

pub struct DataMap {
    pub chunk_identifiers: Vec<ChunkInfo>,
    pub child: Option<usize>,
}

Holds the information that is required to recover the content of the encrypted file. This is held as a vector of ChunkInfo, i.e. a list of the file’s chunk hashes. Only files larger than 3072 bytes (3 * MIN_CHUNK_SIZE) can be self-encrypted. Smaller files will have to be batched together.

Fields

chunk_identifiers: Vec<ChunkInfo>

List of chunk hashes

child: Option<usize>

Child value, None means root data map and any other valuesignifies how many levels of data map we have shrunk

Implementations

impl DataMap

pub fn to_bytes(&self) -> Result<Vec<u8>, Error>

Serialize DataMap to bytes using bincode

pub fn from_bytes(bytes: &[u8]) -> Result<Self, Error>

Deserialize DataMap from bytes, handling both old and new formats

impl DataMap

pub fn new(keys: Vec<ChunkInfo>) -> Self

A new instance from a vec of partial keys.

Sorts on instantiation. The algorithm requires this to be a sorted list to allow get_pad_iv_key to obtain the correct pre-encryption hashes for decryption/encryption.

pub fn with_child(keys: Vec<ChunkInfo>, child: usize) -> Self

Creates a new DataMap with a specified child value

pub fn original_file_size(&self) -> usize

Original (pre-encryption) size of the file.

pub fn infos(&self) -> Vec<ChunkInfo>

Returns the list of chunks pre and post encryption hashes if present.

pub fn child(&self) -> Option<usize>

Returns the child value if set

pub fn len(&self) -> usize

Returns the number of chunks in the DataMap

pub fn is_child(&self) -> bool

Returns true if this DataMap has a child value

Trait Implementations

impl Clone for DataMap

fn clone(&self) -> DataMap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DataMap

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DataMap

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Ord for DataMap

fn cmp(&self, other: &DataMap) -> 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.

impl PartialEq for DataMap

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for DataMap

fn partial_cmp(&self, other: &DataMap) -> 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 Serialize for DataMap

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for DataMap

impl StructuralPartialEq for DataMap