Struct ed25519_dalek::pkcs8::spki::der::asn1::ContextSpecific
pub struct ContextSpecific<T> {
pub tag_number: TagNumber,
pub tag_mode: TagMode,
pub value: T,
}
pkcs8
only.Expand description
Context-specific field which wraps an owned inner value.
This type decodes/encodes a field which is specific to a particular context
and is identified by a TagNumber
.
Fields§
§tag_number: TagNumber
Context-specific tag number sans the leading 0b10000000
class
identifier bit and 0b100000
constructed flag.
tag_mode: TagMode
Tag mode: EXPLICIT
VS IMPLICIT
.
value: T
Value of the field.
Implementations§
§impl<T> ContextSpecific<T>
impl<T> ContextSpecific<T>
pub fn decode_explicit<'a, R>(
reader: &mut R,
tag_number: TagNumber
) -> Result<Option<ContextSpecific<T>>, Error>
pub fn decode_explicit<'a, R>( reader: &mut R, tag_number: TagNumber ) -> Result<Option<ContextSpecific<T>>, Error>
Attempt to decode an EXPLICIT
ASN.1 CONTEXT-SPECIFIC
field with the
provided TagNumber
.
This method has the following behavior which is designed to simplify
handling of extension fields, which are denoted in an ASN.1 schema
using the ...
ellipsis extension marker:
- Skips over
ContextSpecific
fields with a tag number lower than the current one, consuming and ignoring them. - Returns
Ok(None)
if aContextSpecific
field with a higher tag number is encountered. These fields are not consumed in this case, allowing a field with a lower tag number to be omitted, then the higher numbered field consumed as a follow-up. - Returns
Ok(None)
if anything other than aContextSpecific
field is encountered.
pub fn decode_implicit<'a, R>(
reader: &mut R,
tag_number: TagNumber
) -> Result<Option<ContextSpecific<T>>, Error>
pub fn decode_implicit<'a, R>( reader: &mut R, tag_number: TagNumber ) -> Result<Option<ContextSpecific<T>>, Error>
Attempt to decode an IMPLICIT
ASN.1 CONTEXT-SPECIFIC
field with the
provided TagNumber
.
This method otherwise behaves the same as decode_explicit
,
but should be used in cases where the particular fields are IMPLICIT
as opposed to EXPLICIT
.
Trait Implementations§
§impl<'a, T> Choice<'a> for ContextSpecific<T>
impl<'a, T> Choice<'a> for ContextSpecific<T>
§fn can_decode(tag: Tag) -> bool
fn can_decode(tag: Tag) -> bool
Tag
decodable as a variant of this CHOICE
?§impl<T> Clone for ContextSpecific<T>where
T: Clone,
impl<T> Clone for ContextSpecific<T>where
T: Clone,
§fn clone(&self) -> ContextSpecific<T>
fn clone(&self) -> ContextSpecific<T>
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read more§impl<T> Debug for ContextSpecific<T>where
T: Debug,
impl<T> Debug for ContextSpecific<T>where
T: Debug,
§impl<'a, T> Decode<'a> for ContextSpecific<T>where
T: Decode<'a>,
impl<'a, T> Decode<'a> for ContextSpecific<T>where
T: Decode<'a>,
§impl<T> EncodeValue for ContextSpecific<T>where
T: EncodeValue + Tagged,
impl<T> EncodeValue for ContextSpecific<T>where
T: EncodeValue + Tagged,
§impl<T> Ord for ContextSpecific<T>where
T: Ord,
impl<T> Ord for ContextSpecific<T>where
T: Ord,
§fn cmp(&self, other: &ContextSpecific<T>) -> Ordering
fn cmp(&self, other: &ContextSpecific<T>) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
§impl<T> PartialEq for ContextSpecific<T>where
T: PartialEq,
impl<T> PartialEq for ContextSpecific<T>where
T: PartialEq,
§fn eq(&self, other: &ContextSpecific<T>) -> bool
fn eq(&self, other: &ContextSpecific<T>) -> bool
self
and other
values to be equal, and is used
by ==
.§impl<T> PartialOrd for ContextSpecific<T>where
T: PartialOrd,
impl<T> PartialOrd for ContextSpecific<T>where
T: PartialOrd,
§fn partial_cmp(&self, other: &ContextSpecific<T>) -> Option<Ordering>
fn partial_cmp(&self, other: &ContextSpecific<T>) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read more§impl<T> Tagged for ContextSpecific<T>where
T: Tagged,
impl<T> Tagged for ContextSpecific<T>where
T: Tagged,
§impl<'a, T> TryFrom<AnyRef<'a>> for ContextSpecific<T>where
T: Decode<'a>,
impl<'a, T> TryFrom<AnyRef<'a>> for ContextSpecific<T>where
T: Decode<'a>,
§impl<T> ValueOrd for ContextSpecific<T>
impl<T> ValueOrd for ContextSpecific<T>
impl<T> Copy for ContextSpecific<T>where
T: Copy,
impl<T> Eq for ContextSpecific<T>where
T: Eq,
impl<T> StructuralPartialEq for ContextSpecific<T>
Auto Trait Implementations§
impl<T> RefUnwindSafe for ContextSpecific<T>where
T: RefUnwindSafe,
impl<T> Send for ContextSpecific<T>where
T: Send,
impl<T> Sync for ContextSpecific<T>where
T: Sync,
impl<T> Unpin for ContextSpecific<T>where
T: Unpin,
impl<T> UnwindSafe for ContextSpecific<T>where
T: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
§impl<T> Encode for Twhere
T: EncodeValue + Tagged,
impl<T> Encode for Twhere
T: EncodeValue + Tagged,
§fn encoded_len(&self) -> Result<Length, Error>
fn encoded_len(&self) -> Result<Length, Error>
Compute the length of this value in bytes when encoded as ASN.1 DER.
§fn encode(&self, writer: &mut impl Writer) -> Result<(), Error>
fn encode(&self, writer: &mut impl Writer) -> Result<(), Error>
Encode this value as ASN.1 DER using the provided Writer
.