IEEE 11073-20601

From Doowon Kim

Contents 1 용어정의 1.1 ASN.1 2 구현 3 asn.1 3.1 per 4 per to mder 4.1 length 1 -> 2 5 asn1c

용어정의

• Association Request (aarq)
  • Agent initiates an association with the Manager
• Association Response (aare)
  • Manager responds
• Release Request (rlrq)
  • Agent or Manager drop the association (session)
• Release Response (rlre)
  • Peer’s Response
• Abort (abrt)
  • Agent or Manager abort the association (usually a fault condition)

ASN.1

Quick reference sheet for ASN.1

• INTEGER = signed/unsigned integers
• BIT STRING = bit mask
• OCTET STRING = string or binary array of bytes
• SEQUENCE = structure
• SEQUENCE OF = list
• CHOICE = union
• ANY DEFINED BY = identifier followed by a data formatted according to identifier

구현

• asn.1 compiler
• http://bnotes.sourceforge.net/BinaryNotes.pdf

asn.1

• http://www.itu.int/itudoc/itu-t/com17/tutorial/78247_pp7.ppt

per

• What is the difference between PER.BASIC-ALIGNED and PER.BASIC-UNALIGNED encoding/decoding?
  • http://www-01.ibm.com/support/docview.wss?uid=swg21325501
• PER : http://en.wikipedia.org/wiki/Packed_Encoding_Rules

per to mder

length 1 -> 2

• octect string length 1 -> 2 : done
• a sequence of 1 -> 2
• choice
• any defined by

asn1c

• asn_sequence_add
• http://www.google.co.kr/codesearch/p?hl=ko#-wKRNbYkeKI/pub/FreeBSD/distfiles/asn1c-0.9.21.tar.gz%7CEwGjFIy-2Yo/asn1c-0.9.21/asn1c/tests/check-32.c&q=asn_sequence_add
• http://lionet.info/asn1c/examples.html

• uper_encode_to_buffer()에 인자로 들어가는 사이즈는 얼마만큼 인코딩하겠다는 의미가 아니라, 공간이 얼마나 남았다를 알고 있기 위해서이다.
• en.encoded 를 왜 << 3 하는가?