Struct der::asn1::IntRef

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pub struct IntRef<'a> { /* private fields */ }
Expand description

Signed arbitrary precision ASN.1 INTEGER reference type.

Provides direct access to the underlying 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).

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impl<'a> IntRef<'a>

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

Create a new IntRef from a byte slice.

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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 ones stripped.

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pub fn len(&self) -> Length

Get the length of this IntRef in bytes.

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pub fn is_empty(&self) -> bool

Is the inner byte slice empty?

Trait Implementations§

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impl<'a> Clone for IntRef<'a>

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fn clone(&self) -> IntRef<'a>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a> Debug for IntRef<'a>

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

Formats the value using the given formatter. Read more
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impl<'a> DecodeValue<'a> for IntRef<'a>

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fn decode_value<R: Reader<'a>>(reader: &mut R, header: Header) -> Result<Self>

Attempt to decode this message using the provided Reader.
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impl<'a> EncodeValue for IntRef<'a>

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

Compute the length of this value (sans Tag+Length header) when encoded as ASN.1 DER.
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fn encode_value(&self, writer: &mut impl Writer) -> Result<()>

Encode value (sans Tag+Length header) as ASN.1 DER using the provided Writer.
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fn header(&self) -> Result<Header>
where Self: Tagged,

Get the Header used to encode this value.
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impl<'a> FixedTag for IntRef<'a>

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const TAG: Tag = Tag::Integer

ASN.1 tag
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impl<'a> From<&IntRef<'a>> for Int

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

Converts to this type from the input type.
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impl<'a> From<&IntRef<'a>> for IntRef<'a>

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

Converts to this type from the input type.
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impl<'a> Ord for IntRef<'a>

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fn cmp(&self, other: &IntRef<'a>) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl<'a> PartialEq for IntRef<'a>

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a> PartialOrd for IntRef<'a>

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<'a> RefToOwned<'a> for IntRef<'a>

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type Owned = Int

The resulting type after obtaining ownership.
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fn ref_to_owned(&self) -> Self::Owned

Creates a new object taking ownership of the data
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impl<'__der: 'a, 'a> TryFrom<&'__der Any> for IntRef<'a>

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(any: &'__der Any) -> Result<IntRef<'a>>

Performs the conversion.
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impl<'__der: 'a, 'a> TryFrom<AnyRef<'__der>> for IntRef<'a>

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(any: AnyRef<'__der>) -> Result<IntRef<'a>>

Performs the conversion.
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impl<'a> Copy for IntRef<'a>

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impl<'a> Eq for IntRef<'a>

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impl<'a> StructuralPartialEq for IntRef<'a>

Auto Trait Implementations§

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impl<'a> Freeze for IntRef<'a>

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impl<'a> RefUnwindSafe for IntRef<'a>

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impl<'a> Send for IntRef<'a>

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impl<'a> Sync for IntRef<'a>

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impl<'a> Unpin for IntRef<'a>

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impl<'a> UnwindSafe for IntRef<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<'a, T> Choice<'a> for T
where T: Decode<'a> + FixedTag,

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fn can_decode(tag: Tag) -> bool

Is the provided Tag decodable as a variant of this CHOICE?
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impl<T> CloneToUninit for T
where T: Copy,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<'a, T> Decode<'a> for T
where T: DecodeValue<'a> + FixedTag,

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fn decode<R>(reader: &mut R) -> Result<T, Error>
where R: Reader<'a>,

Attempt to decode this message using the provided decoder.
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fn from_der(bytes: &'a [u8]) -> Result<Self>

Parse Self from the provided DER-encoded byte slice.
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impl<T> DerOrd for T

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fn der_cmp(&self, other: &T) -> Result<Ordering, Error>

Return an Ordering between self and other when serialized as ASN.1 DER.
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impl<T> Encode for T
where T: EncodeValue + Tagged,

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

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

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

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

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

Encode this message as ASN.1 DER, appending it to the provided byte vector.
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fn to_der(&self) -> Result<Vec<u8>>

Encode this type as DER, returning a byte vector.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Tagged for T
where T: FixedTag,

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fn tag(&self) -> Tag

Get the ASN.1 tag that this type is encoded with.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> ValueOrd for T
where T: OrdIsValueOrd,

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fn value_cmp(&self, other: &T) -> Result<Ordering, Error>

Return an Ordering between value portion of TLV-encoded self and other when serialized as ASN.1 DER.
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impl<T> DecodeOwned for T
where T: for<'a> Decode<'a>,