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ASN1 Dump

Abstract Syntax Notation One (ASN1) is a standard for defining data structures. The goal is to have a cross platform way to serialize and deserialized data. The ASN1 Dump tool can print out this structure that is normally hidden behind a base64 encoded string.

Line information

Each line represents an ASN1 object within the given structure. The object is described with line information on the left and a readable representation on the right.

The line information contains the following data :

  • o = The offset of the current ASN1 object
  • d = The depth in the current ASN1 structure
  • hl = The length of the ASN1 header
  • l = The length of the value of the ASN1 object in bytes
  • t = The ASN1 tag as HEX