Module types 

ASN.1 Data Types

The types modules is a collection of Rust types and data structures that are defined to represent various ASN.1 data types, and renamed to use ASN.1’s terminology.

Re-exports

pub use self::constraints::Constraint;

pub use self::constraints::Constraints;

pub use self::constraints::Extensible;

pub use self::constraints::InnerSubtypeConstraint;

Modules

constraints

Constraints of values on a given type.

fields

Representing all fields for a SEQUENCE or SET type.

variants

Representing all possible variants for a CHOICE type.

Structs

Any

Represents a complete encoded ASN.1 value of any type. Usually identified with an ObjectIdentifier.

BmpString

A Basic Multilingual Plane (BMP) string, which is a subtype of super::UniversalString containing only the BMP set of characters.

ConstrainedInteger

An integer which has encoded constraint range between START and END.

Explicit

A newtype wrapper that will explicitly tag its value with T’s tag.

FixedOctetString

An OCTET STRING which has a fixed size range. This type uses const generics to be able to place the octet string on the stack rather than the heap.

GeneralString

A “general” string containing the C0 Controls plane, SPACE, Basic Latin, DELETE, and Latin-1 Supplement characters.

GraphicString

A “graphic” string containing the SPACE, Basic Latin, and Latin-1 Supplement characters.

Ia5String

A string which only contains ASCII characters.

Identifier

The identifier of an ASN.1 type in an ASN.1 module. In most cases, the identifier is the human-readable type name as defined in the ASN.1 module. For built-in ASN.1 types, the XML tag names as defined in ITU-T X.680 (2021/02) §12.36 are used. Some ASN.1 types, most notably open types, do not have a consistent identifier.

Implicit

A newtype wrapper that will implicitly tag its value with T’s tag.

InstanceOf

An instance of a defined object class.

Integer

A dynamically sized integer type. This type is similar to num_bigint::BigInt in that it allows for integers of arbitary size making it ideal for handling ASN.1 INTEGER types, in addition this type includes small integer optimisations accounting for the fact integers decoded in ASN.1 don’t exceed native platform widths.

NumericString

A string which can only contain numbers or SPACE characters.

ObjectIdentifier

A global unique identifier that identifies an concept, such as a organisation, or encoding rules. The “owned” version of Oid.

OctetString

The OCTET STRING type.

Oid

A reference to a global unique identifier that identifies an concept, such as a organisation, or encoding rules.

PrintableString

A string, which contains the characters defined in X.680 41.4 Section, Table 10.

SetOf

The SET OF type - an unordered list of zero, one or more values of the component type.

Tag

An abstract representation of an ASN.1 tag that uniquely identifies a type within a ASN.1 module for codecs.

TeletexString

A string, which contains the characters defined in T.61 standard.

Utf8String

A UTF-8–encoded, growable string.

VisibleString

A string which contains a subset of the ISO 646 character set. Type should be constructed by using try_from or from methods.

Enums

Class

The class of tag identifying its category.

Open

An “open” type representing any valid ASN.1 type.

TagTree

The root or node in tree representing all of potential tags in a ASN.1 type.

Traits

AsnType

A trait representing any type that can represented in ASN.1.

Choice

A CHOICE value.

Constructed

A SET or SEQUENCE value. RL is the number of fields in the “root component list”. EL is the number of fields in the list of extensions.

DecodeChoice

A CHOICE value.

Enumerated

A ENUMERATED value.

IntegerType

Represents a integer type in Rust that can be decoded or encoded into any ASN.1 codec.

RealType

Represents a real type in Rust that can be decoded or encoded into any ASN.1 codec.

Type Aliases

BitStr

A reference to a BIT STRING type.

BitString

The BIT STRING type. /// ## Usage ASN1 declaration such as …

Date

The Date type.

FixedBitString

A fixed length BIT STRING type.

GeneralizedTime

The GeneralizedTime type.

SequenceOf

The SEQUENCE OF type.

UniversalString

The UniversalString type.

UtcTime

The UTCTime type.

Derive Macros

AsnType

An automatic derive of the AsnType trait.