Glossary¶

ASN.1¶

Abstract Syntax Notation One. A language that describes the structure of data independently of how it is encoded. SNMP, LDAP and X.509 define their messages in ASN.1.

BER¶

Basic Encoding Rules. The encoding rules of X.690 that x690 implements. Every value is encoded as a TLV.

X.690¶

The ITU-T recommendation that defines BER and its variants for ASN.1 data: https://www.itu.int/rec/T-REC-X.690/en

TLV¶

Type, length, value: the three parts of every BER encoded value. See https://en.wikipedia.org/wiki/Type-length-value

Type class¶

One of universal, application, context or private. Universal types are defined by the standard; the others by the protocol that uses them. See TypeClass.

Nature¶

Primitive for a single value, constructed for a value that contains other values. See TypeNature.

Tag¶

The number that identifies a type within its type class.