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ASN.1 is a data type declaration notation. It does not define how to manipulate a variable of such a type. Manipulation of variables is defined in other languages such as SDL (Specification and Description Language) for executable modeling or TTCN-3 (Testing and Test Control Notation) for conformance testing.
Basic Encoding Rules specifies in general terms, a partially self-describing and self-delimiting protocol for encoding ASN.1 data structures. Each data element is to be encoded as a type identifier, a length description, the actual data elements, and, where necessary, an end-of-content marker.
ASN.1 encoding rules are used as a transfer syntax for remote invocations that resemble CORBA/IIOP. In the light of this comparison, we can draw an approximate analogy between concepts used in Information Object Classes and SQL and IDL concepts as shown in Table 1.
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 PrintableString is a restricted character string type in the ASN.1 notation. It is used to describe data that consists only of a specific printable subset of the ASCII character set. According to the ASN.1 Specification of basic notation, [1] the character set of PrintableString can be expressed as:
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.
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.
An ASN.1 macro, OBJECT-TYPE, is used to concisely convey the syntax and semantics of a managed object. Notification definitions (aka "traps") are used when describing unsolicited transmissions of management information. An ASN.1 macro, NOTIFICATION-TYPE, concisely conveys the syntax and semantics of a notification.