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Abstract Syntax Notation 1
language, standard, protocol (ASN.1, X.208, X.680) An
, originally defined in 1984 as part of CCITTX.409
'84. ASN.1 moved to its own standard, X.208, in 1998
due to wide applicability. The substantially revised 1995
version is covered by the X.680 series.
not restrict the way the information is encoded. Various
representation) of the data values whose abstractsyntax
is described in ASN.1. The standard ASN.1 encoding
rules include BER
(Basic Encoding Rules - X.209), CER
(Canonical Encoding Rules), DER
Rules), and PER
(Packed Encoding Rules).
ASN.1 together with specific ASN.1 encoding rules facilitates
the exchange of structured data especially between
structures in a way that is independent of machine
architecture and implementation language.
ASN.1 to describe the PDU
s they exchange.
Documents describing the ASN.1 notations: ITU-T
Documents describing the ASN.1 encoding rules: ITU-T
[M. Sample et al, "Implementing Efficient Encoders and
Decoders for Network Data Representations", IEEE Infocom 93
Proc, v.3, pp. 1143-1153, Mar 1993. Available from Logica,