Struct rust_sodium::crypto::box_::curve25519xsalsa20poly1305::PrecomputedKey

#[must_use]
pub struct PrecomputedKey(pub [u8; 32]);

Applications that send several messages to the same receiver can gain speed by splitting seal() into two steps, precompute() and seal_precomputed(). Similarly, applications that receive several messages from the same sender can gain speed by splitting open() into two steps, precompute() and open_precomputed().

When a PrecomputedKey goes out of scope its contents will be zeroed out

Methods

impl PrecomputedKey

pub fn from_slice(bs: &[u8]) -> Option<PrecomputedKey>

from_slice() creates an object from a byte slice

This function will fail and return None if the length of the byte-slice isn't equal to the length of the object

Trait Implementations

impl Eq for PrecomputedKey

impl Drop for PrecomputedKey

fn drop(&mut self)

Executes the destructor for this type.

impl PartialEq<PrecomputedKey> for PrecomputedKey

fn eq(&self, PrecomputedKey: &PrecomputedKey) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Clone for PrecomputedKey

fn clone(&self) -> PrecomputedKey

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PrecomputedKey

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

Formats the value using the given formatter.

impl Index<Range<usize>> for PrecomputedKey

Allows a user to access the byte contents of an object as a slice.

WARNING: it might be tempting to do comparisons on objects by using x[a..b] == y[a..b]. This will open up for timing attacks when comparing for example authenticator tags. Because of this only use the comparison functions exposed by the rust_sodium API.

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: Range<usize>) -> &[u8]

Performs the indexing (container[index]) operation.

impl Index<RangeTo<usize>> for PrecomputedKey

Allows a user to access the byte contents of an object as a slice.

WARNING: it might be tempting to do comparisons on objects by using x[..b] == y[..b]. This will open up for timing attacks when comparing for example authenticator tags. Because of this only use the comparison functions exposed by the rust_sodium API.

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: RangeTo<usize>) -> &[u8]

Performs the indexing (container[index]) operation.

impl Index<RangeFrom<usize>> for PrecomputedKey

Allows a user to access the byte contents of an object as a slice.

WARNING: it might be tempting to do comparisons on objects by using x[a..] == y[a..]. This will open up for timing attacks when comparing for example authenticator tags. Because of this only use the comparison functions exposed by the rust_sodium API.

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: RangeFrom<usize>) -> &[u8]

Performs the indexing (container[index]) operation.

impl Index<RangeFull> for PrecomputedKey

Allows a user to access the byte contents of an object as a slice.

WARNING: it might be tempting to do comparisons on objects by using x[] == y[]. This will open up for timing attacks when comparing for example authenticator tags. Because of this only use the comparison functions exposed by the rust_sodium API.

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: RangeFull) -> &[u8]

Performs the indexing (container[index]) operation.

impl Serialize for PrecomputedKey

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

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for PrecomputedKey

fn deserialize<D>(deserializer: D) -> Result<PrecomputedKey, D::Error> where     D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.