Struct ScalarBytes

pub struct ScalarBytes(/* private fields */);

Single BLS12-381 scalar with big-endian representation, not guaranteed to be valid

Implementations

impl ScalarBytes

pub const SAFE_BYTES: usize = 31usize

How many full bytes can be stored in BLS12-381 scalar (for instance before encoding). It is actually 254 bits, but bits are mut harder to work with and likely not worth it.

NOTE: After encoding more bytes can be used, so don’t rely on this as the max number of bytes stored within at all times!

pub const FULL_BYTES: usize = 32usize

How many bytes Scalar contains physically, use Self::SAFE_BYTES for the amount of data that you can put into it safely (for instance before encoding).

Trait Implementations

impl AsMut<[u8; 32]> for ScalarBytes

fn as_mut(&mut self) -> &mut [u8; 32]

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

impl AsRef<[u8; 32]> for ScalarBytes

fn as_ref(&self) -> &[u8; 32]

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

impl Clone for ScalarBytes

fn clone(&self) -> ScalarBytes

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ScalarBytes

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

Formats the value using the given formatter.

impl Decode for ScalarBytes

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Default for ScalarBytes

fn default() -> ScalarBytes

Returns the “default value” for a type.

impl Deref for ScalarBytes

type Target = [u8; 32]

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl DerefMut for ScalarBytes

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<'de> Deserialize<'de> for ScalarBytes

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Encode for ScalarBytes

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<__CodecOutputReturn, __CodecUsingEncodedCallback: FnOnce(&[u8]) -> __CodecOutputReturn>( &self, f: __CodecUsingEncodedCallback, ) -> __CodecOutputReturn

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl From<[u8; 32]> for ScalarBytes

fn from(value: [u8; 32]) -> Self

Converts to this type from the input type.

impl From<ScalarBytes> for [u8; 32]

fn from(value: ScalarBytes) -> Self

Converts to this type from the input type.

impl Hash for ScalarBytes

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ScalarBytes

fn cmp(&self, other: &ScalarBytes) -> 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 ScalarBytes

fn eq(&self, other: &ScalarBytes) -> 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 ScalarBytes

fn partial_cmp(&self, other: &ScalarBytes) -> 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 ScalarBytes

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TypeInfo for ScalarBytes

type Identity = ScalarBytes

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl Copy for ScalarBytes

impl EncodeLike for ScalarBytes

impl Eq for ScalarBytes

impl StructuralPartialEq for ScalarBytes