This Recommendation | International Standard specifies a set of JavaScript Object Notation Encoding Rules (JER) that may be used to derive a transfer syntax for values of types defined in Rec. ITU-T X.680 | ISO\/IEC 8824-1, Rec. ITU-T X.681 | ISO\/IEC 8824-2, Rec. ITU-T X.682 | ISO\/IEC 8824-3 and Rec. ITU-T X.683 | ISO\/IEC 8824-4. It is implicit in the specification of these encoding rules that they are also to be used for decoding.<\/p>\n
The encoding rules specified in this Recommendation | International Standard:<\/p>\n
are used at the time of communication;<\/p>\n<\/li>\n
are intended for use in circumstances where interoperability with applications using JSON is the major concern in the choice of encoding rules;<\/p>\n<\/li>\n
allow the extension of an abstract syntax by addition of extra values for all forms of extensibility described in Rec. ITU-T X.680 | ISO\/IEC 8824-1.<\/p>\n<\/li>\n<\/ul>\n
This Recommendation | International Standard also specifies the syntax and semantics of JER encoding instructions, as well as the rules for their assignment and combination. JER encoding instructions can be used to control JER encoding for specific Abstract Syntax Notation One (ASN.1) types.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Blank Page <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 1 Scope 2 Normative references 2.1 Identical Recommendations | International Standards 2.2 Additional references <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 3 Definitions 3.1 Specification of basic notation 3.2 Information object specification 3.3 Constraint specification 3.4 Parameterization of ASN.1 specification 3.5 Basic Encoding Rules (BER) 3.6 Packed Encoding Rules (PER) 3.7 Additional definitions <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4 Abbreviations 5 Encodings specified by this Recommendation | International Standard <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 6 Conformance 7 General provisions 7.1 Use of the type notation <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 7.2 Constraints <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 7.3 Type and value model used for encoding 7.4 Types to be encoded 7.5 Encoding instructions <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 7.6 Production of a complete JER encoding 8 Notation, lexical items and keywords used in JER encoding instructions <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 9 Specifying JER encoding instructions <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 10 Assigning a JER encoding instruction using a type prefix 11 Assigning a JER encoding instruction using a JER encoding control section 12 Identification of the targets for a JER encoding instruction 12.1 General rules <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 12.2 Types defined in the module 12.3 Built-in types 12.4 Types imported from another module 13 Multiple assignment of JER encoding instructions 13.1 Order in which multiple assignments are considered <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 13.2 Effect of assigning a negating encoding instruction 13.3 Multiple assignment of JER encoding instructions of the same category 14 The ARRAY encoding instruction 14.1 General 14.2 Restrictions 15 The BASE64 encoding instruction 15.1 General <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 15.2 Restrictions 16 The NAME encoding instruction 16.1 General <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 16.2 Restrictions 17 The OBJECT encoding instruction 17.1 General 17.2 Restrictions 18 The TEXT encoding instruction 18.1 General <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 18.2 Restrictions 19 The UNWRAPPED encoding instruction 19.1 General 19.2 Restrictions 20 Encoding of boolean values <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 21 Encoding of integer values 22 Encoding of enumerated values 23 Encoding of real values 23.1 General 23.2 Encoding of the special real values <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 23.3 Encoding as a JSON number 23.4 Encoding as a JSON object 24 Encoding of bitstring values 24.1 General 24.2 Encoding of bitstring types with a fixed size 24.3 Encoding of bitstring types with a variable size 24.4 Alternative encoding of bitstring types with a JER-visible contents constraint <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 25 Encoding of octetstring values 25.1 General 25.2 Encoding of an octetstring value as a JSON string containing a Base64 encoding 25.3 Encoding of an octetstring value as a JSON string containing a hexadecimal encoding 25.4 Alternative encoding of an octetstring type with a JER-visible contents constraint 26 Encoding of the null value 27 Encoding of sequence values 27.1 General 27.2 Array-based encoding 27.3 Object-based encoding <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 28 Encoding of sequence-of values 29 Encoding of set values 30 Encoding of set-of values 30.1 General 30.2 Array-based encoding 30.3 Object-based encoding <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 31 Encoding of choice values 31.1 General 31.2 Unwrapped encoding 31.3 Wrapped encoding 32 Encoding of object identifier values 33 Encoding of relative object identifier values 34 Encoding of values of the internationalized resource reference type 35 Encoding of values of the relative internationalized resource reference type 36 Encoding of values of the embedded-pdv type <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 37 Encoding of values of the external type 38 Encoding of values of the restricted character string types 39 Encoding of values of the unrestricted character string type 40 Encoding of values of the time types 41 Encoding of open type values 42 Object identifier values referencing the encoding rules <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Annex A Examples of JER encodings A.1 ASN.1 description of the record structure A.2 ASN.1 description of a record value A.3 Example JER representation of this record value <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | A.4 Additional examples of JER encodings <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Annex B Examples of JER encoding instructions and their effect on the encodings B.1 ASN.1 description of the record structure B.2 ASN.1 description of a record value <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | B.3 JER representation of this record value B.4 Additional examples of JER encodings <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | B.5 Examples of JER encodings of choice types <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Information technology. ASN.1 encoding rules – Specification of JavaScript Object Notation Encoding Rules (JER)<\/b><\/p>\n |