Struct Int

pub struct Int { /* private fields */ }

Available on crate feature pkcs8 only.

Signed arbitrary precision ASN.1 INTEGER type.

Provides heap-allocated storage for big endian bytes which comprise an signed integer value.

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

Implementations

impl Int

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

Create a new Int from a byte slice.

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

Borrow the inner byte slice which contains the least significant bytes of a big endian integer value with all leading ones stripped.

pub fn len(&self) -> Length

Get the length of this Int in bytes.

pub fn is_empty(&self) -> bool

Is the inner byte slice empty?

Trait Implementations

impl Clone for Int

fn clone(&self) -> Int

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Int

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

Formats the value using the given formatter.

impl<'a> DecodeValue<'a> for Int

fn decode_value<R>(reader: &mut R, header: Header) -> Result<Int, Error>

where R: Reader<'a>,

Attempt to decode this message using the provided Reader.

impl EncodeValue for Int

fn value_len(&self) -> Result<Length, Error>

Compute the length of this value (sans [Tag]+Length header) when encoded as ASN.1 DER.

fn encode_value(&self, writer: &mut impl Writer) -> Result<(), Error>

Encode value (sans [Tag]+Length header) as ASN.1 DER using the provided Writer.

fn header(&self) -> Result<Header, Error>

where Self: Tagged,

Get the Header used to encode this value.

impl FixedTag for Int

const TAG: Tag = Tag::Integer

ASN.1 tag

impl<'a> From<&IntRef<'a>> for Int

fn from(value: &IntRef<'a>) -> Int

Converts to this type from the input type.

impl From<Uint> for Int

fn from(value: Uint) -> Int

Converts to this type from the input type.

impl Ord for Int

fn cmp(&self, other: &Int) -> 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 OwnedToRef for Int

type Borrowed<'a> = IntRef<'a>

The resulting type referencing back to Self

fn owned_to_ref(&self) -> <Int as OwnedToRef>::Borrowed<'_>

Creates a new object referencing back to the self for storage

impl PartialEq for Int

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

fn partial_cmp(&self, other: &Int) -> 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<'__der> TryFrom<&'__der Any> for Int

Available on crate feature alloc only.

type Error = Error

The type returned in the event of a conversion error.

fn try_from(any: &'__der Any) -> Result<Int, Error>

Performs the conversion.

impl<'__der> TryFrom<AnyRef<'__der>> for Int

type Error = Error

The type returned in the event of a conversion error.

fn try_from(any: AnyRef<'__der>) -> Result<Int, Error>

Performs the conversion.

impl Eq for Int

impl StructuralPartialEq for Int