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The advantage is that the ASN.1 description of the data encoding is independent of a particular computer or programming language. Because ASN.1 is both human-readable and machine-readable , an ASN.1 compiler can compile modules into libraries of code, codecs , that decode or encode the data structures.
X.690 is an ITU-T standard specifying several ASN.1 encoding formats: . Basic Encoding Rules (BER); Canonical Encoding Rules (CER); Distinguished Encoding Rules (DER); The Basic Encoding Rules (BER) were the original rules laid out by the ASN.1 standard for encoding data into a binary format.
ASN.1 encoding rules and transfer syntaxes (BER, PER) — Low-level encoding of requests, responses and exception indicators suitable for physical transfer over the medium Note: The analogy between IOS and an SQL table is not quite correct. SQL permits only one instance of a table of given type (OPERATION in the example below), while ASN.1 ...
^ ASN.1 has X.681 (Information Object System), X.682 (Constraints), and X.683 (Parameterization) that allow for the precise specification of open types where the types of values can be identified by integers, by OIDs, etc. OIDs are a standard format for globally unique identifiers, as well as a standard notation ("absolute reference") for ...
The Encoding Control Notation (ECN) is a standardized formal language that is part of the Abstract Syntax Notation One (ASN.1) family of international standards. [1] ECN is designed to be used along with ASN.1, and each ECN specification (a coherent set of encoding definitions) is explicitly related to a particular ASN.1 specification (a coherent set of type definitions).
A GeneralizedTime is a time format in the ASN.1 notation.It consists of a string value representing the calendar date, as defined in ISO 8601, a time of day with an optional fractional seconds element and the optional local time differential factor as defined in ISO 8601.
ASN.1 specifies several TLV-based encoding rules (BER, DER), as well as non-TLV based ones (PER, XER). CSN.1 describes encoding rules using non-TLV semantics. More recently, [when?] XML has been used to implement messaging between different nodes in a network. These messages are typically prefixed with line-based text commands, such as with BEEP.
Abstract Syntax Notation One (ASN.1) is a standard and flexible notation that describes data structures for representing, encoding, transmitting, and decoding data. It provides a set of formal rules for describing the structure of objects that are independent of machine-specific encoding techniques and is a precise, formal notation that removes ambiguities.