Struct BerObject 

pub struct BerObject<'a> {
    pub header: Header<'a>,
    pub content: BerObjectContent<'a>,
}

Available on crate feature crypto only.

Representation of a BER-encoded (X.690) object

A BER object is composed of a header describing the object class, type and length, and the content.

Note that the content may sometimes not match the header tag (for ex when parsing IMPLICIT tagged values).

Fields

header: Header<'a>

content: BerObjectContent<'a>

Implementations

impl<'a> BerObject<'a>

pub const fn from_header_and_content<'o>( header: Header<'o>, content: BerObjectContent<'o>, ) -> BerObject<'o>

Available on crate feature rustls only.

Build a BerObject from a header and content.

Note: values are not checked, so the tag can be different from the real content, or flags can be invalid.

pub const fn from_obj(c: BerObjectContent<'_>) -> BerObject<'_>

Available on crate feature rustls only.

Build a BerObject from its content, using default flags (no class, correct tag, and constructed flag set only for Set and Sequence)

pub const fn from_int_slice(i: &'a [u8]) -> BerObject<'a>

Available on crate feature rustls only.

Build a DER integer object from a slice containing an encoded integer

pub fn set_raw_tag(self, raw_tag: Option<&'a [u8]>) -> BerObject<'a>

Available on crate feature rustls only.

Set a tag for the BER object

pub const fn from_seq(l: Vec<BerObject<'_>>) -> BerObject<'_>

Available on crate feature rustls only.

Build a DER sequence object from a vector of DER objects

pub const fn from_set(l: Vec<BerObject<'_>>) -> BerObject<'_>

Available on crate feature rustls only.

Build a DER set object from a vector of DER objects

pub fn as_i64(&self) -> Result<i64, Error>

Available on crate feature rustls only.

Attempt to read a signed integer value from DER object.

This can fail if the object is not an integer, or if it is too large.

Examples

let der_int  = BerObject::from_int_slice(b"\x80");
assert_eq!(
    der_int.as_i64(),
    Ok(-128)
);

pub fn as_i32(&self) -> Result<i32, Error>

Available on crate feature rustls only.

Attempt to read a signed integer value from DER object.

This can fail if the object is not an integer, or if it is too large.

Examples

let der_int  = BerObject::from_int_slice(b"\x80");
assert_eq!(
    der_int.as_i32(),
    Ok(-128)
);

pub fn as_u64(&self) -> Result<u64, Error>

Available on crate feature rustls only.

Attempt to read integer value from DER object.

This can fail if the object is not an unsigned integer, or if it is too large.

Examples

let der_int  = BerObject::from_int_slice(b"\x01\x00\x01");
assert_eq!(
    der_int.as_u64(),
    Ok(0x10001)
);

pub fn as_u32(&self) -> Result<u32, Error>

Available on crate feature rustls only.

Attempt to read integer value from DER object.

This can fail if the object is not an unsigned integer, or if it is too large.

Examples

let der_int  = BerObject::from_obj(BerObjectContent::Integer(b"\x01\x00\x01"));
assert_eq!(
    der_int.as_u32(),
    Ok(0x10001)
);

pub fn as_bool(&self) -> Result<bool, Error>

Available on crate feature rustls only.

Attempt to read integer value from DER object. This can fail if the object is not a boolean.

pub fn as_oid(&self) -> Result<&Oid<'a>, Error>

Available on crate feature rustls only.

Attempt to read an OID value from DER object. This can fail if the object is not an OID.

pub fn as_oid_val(&self) -> Result<Oid<'a>, Error>

Available on crate feature rustls only.

Attempt to read an OID value from DER object. This can fail if the object is not an OID.

pub fn as_optional(&self) -> Result<Option<&BerObject<'a>>, Error>

Available on crate feature rustls only.

Attempt to get a reference on the content from an optional object. This can fail if the object is not optional.

pub fn as_tagged(&self) -> Result<(Class, Tag, &BerObject<'a>), Error>

Available on crate feature rustls only.

Attempt to get a reference on the content from a tagged object. This can fail if the object is not tagged.

pub fn as_bitstring_ref(&self) -> Result<&BitStringObject<'_>, Error>

Available on crate feature rustls only.

Attempt to read a reference to a BitString value from DER object. This can fail if the object is not an BitString.

Note that this function returns a reference to the BitString. To get an owned value, use as_bitstring

pub fn as_bitstring(&self) -> Result<BitStringObject<'a>, Error>

Available on crate feature rustls only.

Attempt to read a BitString value from DER object. This can fail if the object is not an BitString.

pub fn as_sequence(&self) -> Result<&Vec<BerObject<'a>>, Error>

Available on crate feature rustls only.

Attempt to extract the list of objects from a DER sequence. This can fail if the object is not a sequence.

pub fn as_set(&self) -> Result<&Vec<BerObject<'a>>, Error>

Available on crate feature rustls only.

Attempt to extract the list of objects from a DER set. This can fail if the object is not a set.

pub fn as_slice(&self) -> Result<&'a [u8], Error>

Available on crate feature rustls only.

Attempt to get the content from a DER object, as a slice. This can fail if the object does not contain a type directly equivalent to a slice (e.g a sequence). This function mostly concerns string types, integers, or unknown DER objects.

pub fn as_str(&self) -> Result<&'a str, Error>

Available on crate feature rustls only.

Attempt to get the content from a DER object, as a str. This can fail if the object does not contain a string type.

Only some string types are considered here. Other string types can be read using as_slice.

pub const fn class(&self) -> Class

Available on crate feature rustls only.

Get the BER object header’s class.

pub const fn tag(&self) -> Tag

Available on crate feature rustls only.

Get the BER object header’s tag.

pub const fn length(&self) -> Length

Available on crate feature rustls only.

Get the BER object header’s length.

pub const fn is_universal(&self) -> bool

Available on crate feature rustls only.

Test if object class is Universal

pub const fn is_application(&self) -> bool

Available on crate feature rustls only.

Test if object class is Application

pub const fn is_contextspecific(&self) -> bool

Available on crate feature rustls only.

Test if object class is Context-specific

pub fn is_private(&self) -> bool

Available on crate feature rustls only.

Test if object class is Private

pub const fn is_primitive(&self) -> bool

Available on crate feature rustls only.

Test if object is primitive

pub const fn is_constructed(&self) -> bool

Available on crate feature rustls only.

Test if object is constructed

pub const fn assert_class(&self, class: Class) -> Result<(), Error>

Available on crate feature rustls only.

Return error if class is not the expected class

pub const fn assert_tag(&self, tag: Tag) -> Result<(), Error>

Available on crate feature rustls only.

Return error if tag is not the expected tag

pub const fn assert_constructed(&self) -> Result<(), Error>

Available on crate feature rustls only.

Return error if object is not constructed

pub const fn assert_primitive(&self) -> Result<(), Error>

Available on crate feature rustls only.

Return error if object is not primitive

impl BerObject<'_>

pub fn as_bigint(&self) -> Result<BigInt, Error>

Available on crate features rustls and bigint only.

Attempt to read an integer value from this object.

This can fail if the object is not an integer.

Examples

use der_parser::ber::*;

let data = &[0x02, 0x03, 0x01, 0x00, 0x01];

let (_, object) = parse_ber_integer(data).expect("parsing failed");
assert_eq!(object.as_bigint(), Ok(65537.into()))

pub fn as_biguint(&self) -> Result<BigUint, Error>

Available on crate features rustls and bigint only.

Attempt to read a positive integer value from this object.

This can fail if the object is not an integer, or is negative.

Examples

use der_parser::ber::*;

let data = &[0x02, 0x03, 0x01, 0x00, 0x01];

let (_, object) = parse_ber_integer(data).expect("parsing failed");
assert_eq!(object.as_biguint(), Ok(65537_u32.into()))

impl<'a> BerObject<'a>

pub fn ref_iter(&'a self) -> BerObjectRefIterator<'a>

Available on crate feature rustls only.

impl<'a> BerObject<'a>

pub fn as_pretty(&'a self, indent: usize, increment: usize) -> PrettyBer<'a>

Available on crate feature rustls only.

Trait Implementations

impl<'a> Clone for BerObject<'a>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for BerObject<'a>

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

Formats the value using the given formatter.

impl<'a> From<BerObjectContent<'a>> for BerObject<'a>

Build a DER object from a BerObjectContent.

fn from(obj: BerObjectContent<'a>) -> BerObject<'a>

Converts to this type from the input type.

impl<'a> From<Oid<'a>> for BerObject<'a>

Build a DER object from an OID.

fn from(oid: Oid<'a>) -> BerObject<'a>

Converts to this type from the input type.

impl<'a> Index<usize> for BerObject<'a>

type Output = BerObject<'a>

The returned type after indexing.

fn index(&self, idx: usize) -> &BerObject<'a>

Performs the indexing (container[index]) operation.

impl<'a> IntoIterator for BerObject<'a>

type Item = BerObject<'a>

The type of the elements being iterated over.

type IntoIter = BerObjectIntoIterator<'a>

Which kind of iterator are we turning this into?

fn into_iter(self) -> <BerObject<'a> as IntoIterator>::IntoIter

Creates an iterator from a value.

impl<'a> PartialEq for BerObject<'a>

fn eq(&self, other: &BerObject<'a>) -> 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<'a, 'b> TryFrom<&'b Any<'a>> for BerObject<'a>

type Error = Error

The type returned in the event of a conversion error.

fn try_from( any: &'b Any<'a>, ) -> Result<BerObject<'a>, <BerObject<'a> as TryFrom<&'b Any<'a>>>::Error>

Performs the conversion.

impl<'a> TryFrom<Any<'a>> for BerObject<'a>

type Error = Error

The type returned in the event of a conversion error.

fn try_from( any: Any<'a>, ) -> Result<BerObject<'a>, <BerObject<'a> as TryFrom<Any<'a>>>::Error>

Performs the conversion.

impl<'a> StructuralPartialEq for BerObject<'a>