for NANE OCTET STRING (SIZE (1 ... 8192)), how should I decode the
received bit stream?
We are using PER unaligned.
The first 13 bits are used for the length field. There are only 8192
possible lengths and we can represent all possible states in 13 bits. The
length is transformed by adding 1. Thus a length field containing all
zeroes really signifies a length of 1, and a length field containing the
least significant 13 bits of 0x1FFF (all ones) signifies 8192. Immediately
thereafter (without padding) come the octets of the OCTET STRING. By way
of example
00088910 in hex
00000000 00001000 10001001 00010000 in bits
00000000 00001xxx xxxxxxxx xxxxxxxx length (1 --> 2)
xxxxxxxx xxxxx000 10001001 00010xxx octets '1122'H
xxxxxxxx xxxxxxxx xxxxxxxx xxxxx000 padding
Note that the padding at the end is only shown so that I can easily
represent the encoding in hexadecimal. If there were more data following
the OCTET STRING, it would start where the padding start.
Also note that the encoding doesn't necessarily start on an octet
boundary unless it's the first element in the encoding. If it followed
another encoding, it would begin where the previous one ended.
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OSS Nokalva Fax : 1-614-388-4156
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