ASN.1: INTEGER : Represent integer values

Type: INTEGER

Description: It is used to represent integer values. It does not have any upper and lower limits, it can be of any magnitude.

Examples

id  INTEGER

age INTEGER (15..60)

In the second example, age is of type integer and the valid values are from 15 to 60.

Example Schema

Employee ::= SEQUENCE {
 firstName VisibleString,
 lastName VisibleString,
 isPermanentEmployee BOOLEAN,
 id INTEGER,
 age INTEGER (15..60)
}

Sample data for above schema

employee1 Employee ::= {
 firstName "Rama Krishna",
 lastName "Gurram",
 isPermanentEmployee FALSE,
 id 12345,
 age 30
}

XML encoding of above data

<?xml version="1.0" encoding="UTF-8"?>
<Employee>
  <firstName>Rama Krishna</firstName>
  <lastName>Gurram</lastName>
  <isPermanentEmployee><false/></isPermanentEmployee>
  <id>12345</id>
  <age>30</age>
</Employee>

INTEGER type has also one possible notation, where you can name the possible values associated with this integer.

FavoriteColors ::= INTEGER {

  red    (0),

  green  (1),       

  yellow (2),

  blue   (3)

}

Example Schema

FavoriteColors ::= INTEGER {
  red    (0),
  green  (1), 
  yellow (2),
  blue   (3)
}

Person ::= SEQUENCE {
  firstName VisibleString,
  lastName VisibleString,
  favoriteColor FavoriteColors
}

Sample data for above schema

person Person ::= {
  firstName "Rama Krishna",
  lastName "Gurram",
  favoriteColor green
}

XML encoding of above data

<?xml version="1.0" encoding="UTF-8"?>
<Person>
  <firstName>Rama Krishna</firstName>
  <lastName>Gurram</lastName>
  <favoriteColor>1</favoriteColor>
</Person>

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