Struct der::Decoder[−][src]

pub struct Decoder<'a> { /* fields omitted */ }

Expand description

DER decoder.

Implementations

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impl<'a> Decoder<'a>

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

Create a new decoder for the given byte slice.

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pub fn decode<T: Decodable<'a>>(&mut self) -> Result<T>

Decode a value which impls the Decodable trait.

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pub fn error(&mut self, kind: ErrorKind) -> Error

Return an error with the given ErrorKind, annotating it with context about where the error occurred.

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pub fn value_error(&mut self, tag: Tag) -> Error

Return an error for an invalid value with the given tag.

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pub fn is_failed(&self) -> bool

Did the decoding operation fail due to an error?

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pub fn position(&self) -> Length

Get the position within the buffer.

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pub fn peek_byte(&self) -> Option<u8>

Peek at the next byte in the decoder without modifying the cursor.

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pub fn peek_tag(&self) -> Result<Tag>

Peek at the next byte in the decoder and attempt to decode it as a Tag value.

Does not modify the decoder’s state.

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pub fn peek_header(&self) -> Result<Header>

Peek forward in the decoder, attempting to decode a Header from the data at the current position in the decoder.

Does not modify the decoder’s state.

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pub fn finish<T>(self, value: T) -> Result<T>

Finish decoding, returning the given value if there is no remaining data, or an error otherwise

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pub fn is_finished(&self) -> bool

Have we decoded all of the bytes in this Decoder?

Returns false if we’re not finished decoding or if a fatal error has occurred.

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pub fn any(&mut self) -> Result<Any<'a>>

Attempt to decode an ASN.1 ANY value.

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pub fn any_optional(&mut self) -> Result<Option<Any<'a>>>

Attempt to decode an OPTIONAL ASN.1 ANY value.

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pub fn int8(&mut self) -> Result<i8>

Attempt to decode ASN.1 INTEGER as i8

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pub fn int16(&mut self) -> Result<i16>

Attempt to decode ASN.1 INTEGER as i16

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pub fn uint8(&mut self) -> Result<u8>

Attempt to decode unsigned ASN.1 INTEGER as u8

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pub fn uint16(&mut self) -> Result<u16>

Attempt to decode unsigned ASN.1 INTEGER as u16

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pub fn uint_bytes(&mut self) -> Result<UIntBytes<'a>>

This is supported on crate feature bigint only.

Attempt to decode an ASN.1 INTEGER as a UIntBytes.

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pub fn bit_string(&mut self) -> Result<BitString<'a>>

Attempt to decode an ASN.1 BIT STRING.

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pub fn context_specific<T>(
 &mut self,
 tag_number: TagNumber,
 tag_mode: TagMode
) -> Result<Option<T>> where
 T: DecodeValue<'a> + FixedTag,

Attempt to decode an ASN.1 CONTEXT-SPECIFIC field with the provided TagNumber.

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pub fn generalized_time(&mut self) -> Result<GeneralizedTime>

Attempt to decode an ASN.1 GeneralizedTime.

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pub fn ia5_string(&mut self) -> Result<Ia5String<'a>>

Attempt to decode an ASN.1 IA5String.

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pub fn null(&mut self) -> Result<Null>

Attempt to decode an ASN.1 NULL value.

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pub fn octet_string(&mut self) -> Result<OctetString<'a>>

Attempt to decode an ASN.1 OCTET STRING.

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pub fn oid(&mut self) -> Result<ObjectIdentifier>

This is supported on crate feature oid only.

Attempt to decode an ASN.1 OBJECT IDENTIFIER.

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pub fn optional<T: Choice<'a>>(&mut self) -> Result<Option<T>>

Attempt to decode an ASN.1 OPTIONAL value.

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pub fn printable_string(&mut self) -> Result<PrintableString<'a>>

Attempt to decode an ASN.1 PrintableString.

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pub fn utc_time(&mut self) -> Result<UtcTime>

Attempt to decode an ASN.1 UTCTime.

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pub fn utf8_string(&mut self) -> Result<Utf8String<'a>>

Attempt to decode an ASN.1 UTF8String.

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pub fn sequence<F, T>(&mut self, f: F) -> Result<T> where
F: FnOnce(&mut Decoder<'a>) -> Result<T>,

Attempt to decode an ASN.1 SEQUENCE, creating a new nested Decoder and calling the provided argument with it.

Trait Implementations

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impl<'a> Clone for Decoder<'a>

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

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl<'a> RefUnwindSafe for Decoder<'a>

impl<'a> Send for Decoder<'a>

impl<'a> Sync for Decoder<'a>

impl<'a> Unpin for Decoder<'a>

impl<'a> UnwindSafe for Decoder<'a>

Blanket Implementations

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

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

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pub fn from(t: T) -> T

Performs the conversion.

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

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pub fn into(self) -> U

Performs the conversion.

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impl<T> Same<T> for T

type Output = T

Should always be Self

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

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pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

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pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct der::Decoder[−][src]

Implementations

impl<'a> Decoder<'a>

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

pub fn decode<T: Decodable<'a>>(&mut self) -> Result<T>

pub fn error(&mut self, kind: ErrorKind) -> Error

pub fn value_error(&mut self, tag: Tag) -> Error

pub fn is_failed(&self) -> bool

pub fn position(&self) -> Length

pub fn peek_byte(&self) -> Option<u8>

pub fn peek_tag(&self) -> Result<Tag>

pub fn peek_header(&self) -> Result<Header>

pub fn finish<T>(self, value: T) -> Result<T>

pub fn is_finished(&self) -> bool

pub fn any(&mut self) -> Result<Any<'a>>

pub fn any_optional(&mut self) -> Result<Option<Any<'a>>>

pub fn int8(&mut self) -> Result<i8>

pub fn int16(&mut self) -> Result<i16>

pub fn uint8(&mut self) -> Result<u8>

pub fn uint16(&mut self) -> Result<u16>

pub fn uint_bytes(&mut self) -> Result<UIntBytes<'a>>

pub fn bit_string(&mut self) -> Result<BitString<'a>>

pub fn context_specific<T>( &mut self, tag_number: TagNumber, tag_mode: TagMode) -> Result<Option<T>> where T: DecodeValue<'a> + FixedTag,

pub fn generalized_time(&mut self) -> Result<GeneralizedTime>

pub fn ia5_string(&mut self) -> Result<Ia5String<'a>>

pub fn null(&mut self) -> Result<Null>

pub fn octet_string(&mut self) -> Result<OctetString<'a>>

pub fn oid(&mut self) -> Result<ObjectIdentifier>

pub fn optional<T: Choice<'a>>(&mut self) -> Result<Option<T>>

pub fn printable_string(&mut self) -> Result<PrintableString<'a>>

pub fn utc_time(&mut self) -> Result<UtcTime>

pub fn utf8_string(&mut self) -> Result<Utf8String<'a>>

pub fn sequence<F, T>(&mut self, f: F) -> Result<T> where F: FnOnce(&mut Decoder<'a>) -> Result<T>,

Trait Implementations

impl<'a> Clone for Decoder<'a>

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

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

impl<'a> Debug for Decoder<'a>

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

Auto Trait Implementations

impl<'a> RefUnwindSafe for Decoder<'a>

impl<'a> Send for Decoder<'a>

impl<'a> Sync for Decoder<'a>

impl<'a> Unpin for Decoder<'a>

impl<'a> UnwindSafe for Decoder<'a>

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

impl<T> Same<T> for T

type Output = T

impl<T> ToOwned for T where T: Clone,

type Owned = T

pub fn to_owned(&self) -> T

pub fn clone_into(&self, target: &mut T)

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

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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

pub fn context_specific<T>(
&mut self,
tag_number: TagNumber,
tag_mode: TagMode
) -> Result<Option<T>> where
T: DecodeValue<'a> + FixedTag,

pub fn sequence<F, T>(&mut self, f: F) -> Result<T> where
F: FnOnce(&mut Decoder<'a>) -> Result<T>,

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

impl<T> ToOwned for T where
T: Clone,

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,