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HEAD CRASH!! FILES LOST!! Details at 11.


computers / comp.compression / Is this compressed data?

SubjectAuthor
o Is this compressed data?trejkaz

1
Subject: Is this compressed data?
From: trej...@gmail.com
Newsgroups: comp.compression
Date: Thu, 21 Nov 2019 02:00 UTC
X-Received: by 2002:a0c:fba5:: with SMTP id m5mr5900154qvp.139.1574301649367;
Wed, 20 Nov 2019 18:00:49 -0800 (PST)
X-Received: by 2002:a05:620a:2f5:: with SMTP id a21mr5631105qko.372.1574301648874;
Wed, 20 Nov 2019 18:00:48 -0800 (PST)
Path: i2pn2.org!i2pn.org!weretis.net!feeder6.news.weretis.net!news.snarked.org!border2.nntp.dca1.giganews.com!nntp.giganews.com!j16no8992106qtl.0!news-out.google.com!p4ni1347qtu.1!nntp.google.com!j16no8992101qtl.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.compression
Date: Wed, 20 Nov 2019 18:00:48 -0800 (PST)
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=202.68.169.126;
posting-account=lPAOWwoAAADQEowlONRXZuqUeks6y5qw
NNTP-Posting-Host: 202.68.169.126
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <ee409ace-9deb-4ef0-83b0-a1e832fbf493@googlegroups.com>
Subject: Is this compressed data?
From: trej...@gmail.com
Injection-Date: Thu, 21 Nov 2019 02:00:49 +0000
Content-Type: text/plain; charset="UTF-8"
Lines: 76
View all headers
Hi all.

I am trying to read the DocuWorks file format and ran across this data I can't yet interpret.

The first 48 bytes looks a bit like it might be metadata, perhaps a hash and then some integer values.

38 60 95 BD 80 21 43 B5 B7 FD 81 00 12 41 80 88
10 01 00 04 00 20 00 00 40 06 00 00 24 44 06 00
21 80 18 03 00 00 00 32 00 8C 00 04 00 00 00 0A

But then what follows is pretty close to 8.0 entropy:

FF CE 7B EE 73 5E D7 B6 5E F7 B7 9D DD F7 69 DD
87 7F 2A 7B F6 CD 75 92 3A 9B 56 52 14 15 F6 80
16 00 30 00 00 02 C0 06 DC 1C A7 0E C2 40 00 68
7A 80 00 21 00 30 26 C2 94 E6 E4 F0 D4 E4 F0 CA
B4 FA E8 D4 EE C6 6E F8 09 C4 AE 7C 54 4F E1 3A
00 4C 07 FD D7 FF 95 5F 27 88 DF 7C 73 EB 4C ED
86 F4 85 C9 B1 CF 51 B5 F8 05 BF C2 9F 8E 6A 27
6D F0 12 8A 3C 7A CB E0 86 A1 B7 F4 B9 68 43 3A
2F BF 3A 3C C2 0E CD 91 A6 FF 90 BD F4 4D 92 8D
5C C2 1A 80 8F CD DA 69 FC 8E A7 89 C3 B0 96 29
CB C9 55 68 30 F8 27 C8 FA E5 C8 3E 6B E2 88 3A
09 25 72 5C FC 78 CD B6 2F 3E BF 62 D4 CC 7C 92
64 67 24 4E 55 D9 24 EA FE 0D 40 A4 2C A5 EB F6
37 BE E7 C2 45 08 3F D5 78 67 AA 08 E5 F2 77 4E
60 60 C2 8A B3 A0 AF 67 24 6F DA E3 4B F4 E8 B5
BC C8 1D C2 B2 85 91 2E C8 53 68 94 94 21 A5 34
85 B5 F9 47 37 A2 52 3A 4E B3 E3 99 61 2F DF A1
31 81 75 F9 4A F2 52 1D AD 66 A2 B3 96 31 D9 DF
43 83 FB D3 65 14 D5 88 81 D7 E5 EA 58 F9 1D B5
23 5C FC 63 58 DE 01 5C 4E DE F4 05 4D 6A 7A D1
DC 18 A3 36 1A C2 9E CC 5D 72 C7 61 1E 2C D7 41
6E 94 B0 22 C6 A1 D0 E9 7B 76 FC 85 9B 85 4E DB
DB 48 60 E1 64 88 F5 D9 0D 5E ED 8C 93 6B 7A 3E
44 10 7A B3 80 67 A0 F6 FB EA 19 FD 1F 4F 62 91
F7 2E 0A FD 5B 98 F9 EC 57 9B 67 5F F3 11 11 4E
29 31 BB CC E2 0F 47 71 68 B9 E9 52 E1 E4 49 76
43 FB FA CF F1 B8 57 A5 59 28 CF FB 47 74 75 06
70 21 C9 F0 E2 EF 9D 60 50 13 BF 90 71 60 38 DC
E7 38 FF 79 B7 FB FD 14 01 FF F0 D5 15 48 13 59
72 FF BA 55 3F C6 24 6F FC 6A 99 5D 9A 9C 5D CE
0D FF E7 EF FD 9A 2F FB AF FA AA 89 1B CF F1 A2
1C F9 72 C2 F9 C2 E4 DC 2B E8 DE 12 D0 2A 1C 34
7E F4 89 74 05 C6 18 54 3E 64 3A 59 ED F9 DE 9E
68 99 F9 E2 6C 7B EC E9 D8 99 42 24 BF 6F CE E1
13 5E 75 E4 D8 F9 89 A5 56 C7 62 AE 06 73 7B D9
2F 98 7C 6D DF 00 4A 43 5B 85 3A 7C CD 74 D8 1C
99 DC EC 6B F3 C3 2D 50 32 C3 85 8B 5F 22 8A C8
26 16 90 EE 88 FC E3 5D 90 ED 99 A5 F6 6D D1 8D
B7 7B CC B2 32 DA 0B AB A8 26 DD 56 F3 BB 7F 30
5F 19 D9 73 AC CC D6 F4 F6 17 F1 7A 64 54 CB 98
72 9B 5C 70 30 43 4D 68 F5 92 DF 13 68 F8 EB DD
5A D6 3B F5 AE 09 2B 33 B8 D6 F3 2E B3 52 67 13
93 82 F0 92 1F 4A 81 A2 6E 6B 7C 9E 07 EA 0B AA
3C 08 98 63 51 99 E1 98 93 8F 18 06 B6 2F 63 07
A6 EC 56 E0 14 73 EE 52 C5 FA F6 5F E3 99 38 46
34 8E 91 2F FF A4 7F E5 0B 9C E4 4F FE B9 43 15
00 00 A0 00 C0 93 DB 9B B3 49 C7 FE 49 23 4B 9B
43 C8 2F F3 B5 7F E3 B3 BF E8 98 09 7F 89 80 97
FD 83 0A 89 2C 65 4F F3 74 FE FC A9 F6 F0 B6 0F
7B 14 3F 24 8A 45 43 81 8A 55 D1 81 FD 72 E9 9B
FF 5F F7 05 EB ED 6E 8A B9 4E 7D 4A DA 5A 3C 8D
C8 BD 37 DE 89 9B 53 9A 8F 5A 62 CA DB 35 FB 8A
48 95 A1 F9 2B 2D DA 91 D3 35 73 32 5B E9 A2 09
BA CD D3 CC 76 B0 16 42 89 14 D4 74 F0 D3 E6 1A
76 69 FE 14 AA 48 43 C8 6B CF 94 42 E3 BF F4 A5
D2 D3 A1 49 E9 97 E8 CE 8D 18 C6 D8 C8 F8 9C E8
CA 93 32 40 F4 11 EF FB D4 E5 B2 D5 11 4A D1 F9
CB A6 66 3E DA 99 76 5F 28 AB CD 7F AD BB C8 88
81 A9 C7 9B 09 4A 4F 29 71 8E 0F DF 8F 31 D9 22
25 A0 2C 9F 8A 07 C1 43 98 4D F8 AB F8 58 61 08
3E F6 EB 8B AD 1A FE 75 32 D0 BC 96 1A F0 7D 15

In the worst case I guess it could be encryption instead of compression, but I thought it was worth a shot asking here, to see whether anything here looked familiar to anyone.

TX


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