Struct der::BigUInt

pub struct BigUInt<'a, N: Unsigned + NonZero> { /* fields omitted */ }

This is supported on crate feature big-uint only.

“Big” unsigned ASN.1 INTEGER type.

Provides direct access to the underlying big endian bytes which comprise an unsigned integer value.

Intended for use cases like very large integers that are used in cryptographic applications (e.g. keys, signatures).

Generic over a Size value (e.g. der::consts::U64), indicating the size of an integer in bytes.

Currently supported sizes are 1 - 512 bytes.

Implementations

impl<'a, N> BigUInt<'a, N> where
    N: Unsigned + NonZero, 

pub fn new(bytes: &'a [u8]) -> Result<Self>

Create a new BigUInt from a byte slice.

Slice may be less than or equal to N bytes.

pub fn as_bytes(&self) -> &'a [u8]

Borrow the inner byte slice which contains the least significant bytes of a big endian integer value with all leading zeros stripped, and may be any length from empty (i.e. zero) to N bytes.

pub fn len(&self) -> Length

Get the length of this BigUInt in bytes.

pub fn is_empty(&self) -> bool

Is the inner byte slice empty?

Trait Implementations

impl<'a, N: Clone + Unsigned + NonZero> Clone for BigUInt<'a, N>

fn clone(&self) -> BigUInt<'a, N>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, N: Debug + Unsigned + NonZero> Debug for BigUInt<'a, N>

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

Formats the value using the given formatter.

impl<'a, N> Encodable for BigUInt<'a, N> where
    N: Unsigned + NonZero, 

fn encoded_len(&self) -> Result<Length>

Compute the length of this value in bytes when encoded as ASN.1 DER.

fn encode(&self, encoder: &mut Encoder<'_>) -> Result<()>

Encode this value as ASN.1 DER using the provided Encoder.

fn encode_to_slice<'a>(&self, buf: &'a mut [u8]) -> Result<&'a [u8]>

Encode this value to the provided byte slice, returning a sub-slice containing the encoded message.

fn encode_to_vec(&self, buf: &mut Vec<u8>) -> Result<Length>

This is supported on crate feature alloc only.

Encode this message as ASN.1 DER, appending it to the provided byte vector.

fn to_vec(&self) -> Result<Vec<u8>>

This is supported on crate feature alloc only.

Serialize this message as a byte vector.

impl<'a, N> From<&'_ BigUInt<'a, N>> for BigUInt<'a, N> where
    N: Unsigned + NonZero, 

fn from(value: &BigUInt<'a, N>) -> BigUInt<'a, N>

Performs the conversion.

impl<'a, N: PartialEq + Unsigned + NonZero> PartialEq<BigUInt<'a, N>> for BigUInt<'a, N>

fn eq(&self, other: &BigUInt<'a, N>) -> bool

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

fn ne(&self, other: &BigUInt<'a, N>) -> bool

This method tests for !=.

impl<'a, N: PartialOrd + Unsigned + NonZero> PartialOrd<BigUInt<'a, N>> for BigUInt<'a, N>

fn partial_cmp(&self, other: &BigUInt<'a, N>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]

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

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]

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

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, N> Tagged for BigUInt<'a, N> where
    N: Unsigned + NonZero, 

const TAG: Tag

ASN.1 tag

impl<'a, N> TryFrom<Any<'a>> for BigUInt<'a, N> where
    N: Unsigned + NonZero, 

type Error = Error

The type returned in the event of a conversion error.

fn try_from(any: Any<'a>) -> Result<BigUInt<'a, N>>

Performs the conversion.

impl<'a, N: Copy + Unsigned + NonZero> Copy for BigUInt<'a, N>

impl<'a, N: Eq + Unsigned + NonZero> Eq for BigUInt<'a, N>

impl<'a, N: Unsigned + NonZero> StructuralEq for BigUInt<'a, N>

impl<'a, N: Unsigned + NonZero> StructuralPartialEq for BigUInt<'a, N>