pub enum ASN1Block {
Show 18 variants Boolean(usize, bool), Integer(usize, BigInt), BitString(usize, usize, Vec<u8>), OctetString(usize, Vec<u8>), Null(usize), ObjectIdentifier(usize, OID), UTF8String(usize, String), PrintableString(usize, String), TeletexString(usize, String), IA5String(usize, String), UTCTime(usize, PrimitiveDateTime), GeneralizedTime(usize, PrimitiveDateTime), UniversalString(usize, String), BMPString(usize, String), Sequence(usize, Vec<ASN1Block>), Set(usize, Vec<ASN1Block>), Explicit(ASN1Class, usize, BigUint, Box<ASN1Block>), Unknown(ASN1Class, bool, usize, BigUint, Vec<u8>),
}
Expand description

A primitive block from ASN.1.

Primitive blocks all contain the offset from the beginning of the parsed document, followed by whatever data is associated with the block. The latter should be fairly self-explanatory, so let’s discuss the offset.

The offset is only valid during the reading process. It is ignored for the purposes of encoding blocks into their binary form. It is also ignored for the purpose of comparisons via ==. It is included entirely to support the parsing of things like X509 certificates, in which it is necessary to know when particular blocks end.

The ASN1Class of explicitly tagged blocks is either Application, ContextSpecific or Private. Unknown can have any class. The class of all other variants is Universal.

Variants§

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Boolean(usize, bool)

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Integer(usize, BigInt)

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BitString(usize, usize, Vec<u8>)

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OctetString(usize, Vec<u8>)

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Null(usize)

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ObjectIdentifier(usize, OID)

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UTF8String(usize, String)

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PrintableString(usize, String)

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TeletexString(usize, String)

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IA5String(usize, String)

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UTCTime(usize, PrimitiveDateTime)

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GeneralizedTime(usize, PrimitiveDateTime)

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UniversalString(usize, String)

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BMPString(usize, String)

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Sequence(usize, Vec<ASN1Block>)

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Set(usize, Vec<ASN1Block>)

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Explicit(ASN1Class, usize, BigUint, Box<ASN1Block>)

An explicitly tagged block.

The class can be either Application, ContextSpecific or Private. The other parameters are offset, tag and content.

This block is always constructed.

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Unknown(ASN1Class, bool, usize, BigUint, Vec<u8>)

An unkown block.

The parameters are class, constructed, offset, tag and content.

Implementations§

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impl ASN1Block

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pub fn class(&self) -> ASN1Class

Get the class associated with the given ASN1Block, regardless of what kind of block it is.

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pub fn offset(&self) -> usize

Get the starting offset associated with the given ASN1Block, regardless of what kind of block it is.

Trait Implementations§

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impl Clone for ASN1Block

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fn clone(&self) -> ASN1Block

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 Debug for ASN1Block

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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 PartialEq<ASN1Block> for ASN1Block

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fn eq(&self, other: &ASN1Block) -> 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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Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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<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 Twhere 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> ToOwned for Twhere 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 Twhere 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 Twhere 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.