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Want to resurrect your D/D2 MAC kit?
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<blockquote data-quote="Captain Jack" data-source="post: 1014930" data-attributes="member: 243342"><p>Some great info here, which I suspect is where Phil got his information from to generate MAC samples:</p><p></p><p><a href="http://www.etsi.org/deliver/etsi_i_ets/300200_300299/300250/01_60/ets_300250e01p.pdf" target="_blank">http://www.etsi.org/deliver/etsi_i_ets/300200_300299/300250/01_60/ets_300250e01p.pdf</a></p><p></p><p>Especially interesting is the implementation of the CA system. Looking at the data structure, setting the last 3 bit appropriately, will tell the decoder whether to try decoding the signal.</p><p></p><p>[CODE]bits += self.bits({ 'len': 8, 'code': 0x10000000 }) # TDMCID (8 bits)[/CODE]</p><p></p><p>From page 24:</p><p></p><p>[ATTACH=full]106835[/ATTACH] </p><p></p><p>Does that mean that with bits set to 000, my decoder will try to unscramble the signal in "free" mode (using local CW) - a la MTV Germany? We could potentially make encrypted files with a set cut/rotate sequence and get the decoder to decrypt it in "free access" mode (or soft encryption). I suspect, it will be a bit of a challenge but hey...</p></blockquote><p></p>
[QUOTE="Captain Jack, post: 1014930, member: 243342"] Some great info here, which I suspect is where Phil got his information from to generate MAC samples: [URL]http://www.etsi.org/deliver/etsi_i_ets/300200_300299/300250/01_60/ets_300250e01p.pdf[/URL] Especially interesting is the implementation of the CA system. Looking at the data structure, setting the last 3 bit appropriately, will tell the decoder whether to try decoding the signal. [CODE]bits += self.bits({ 'len': 8, 'code': 0x10000000 }) # TDMCID (8 bits)[/CODE] From page 24: [ATTACH=full]106835[/ATTACH] Does that mean that with bits set to 000, my decoder will try to unscramble the signal in "free" mode (using local CW) - a la MTV Germany? We could potentially make encrypted files with a set cut/rotate sequence and get the decoder to decrypt it in "free access" mode (or soft encryption). I suspect, it will be a bit of a challenge but hey... [/QUOTE]
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