Struct PrecomputedKey

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

Tuple Fields

0: [u8; 32]

Implementations

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 AsRef<[u8]> for PrecomputedKey

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

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<(), Error>

Formats the value using the given formatter.

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

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

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Drop for PrecomputedKey

fn drop(&mut self)

Executes the destructor for this type.

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 sodiumoxide API.

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: Range<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 sodiumoxide 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 sodiumoxide API.

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: RangeFull) -> &[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 sodiumoxide API.

type Output = [u8]

The returned type after indexing.

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

Performs the indexing (container[index]) operation.

impl PartialEq for PrecomputedKey

fn eq(&self, other: &PrecomputedKey) -> 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 Serialize for PrecomputedKey

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

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for PrecomputedKey