Search found 306 matches

by cologic
2006-08-17 20:36
Forum: Protocol Alley
Topic: ADC encryption and compression
Replies: 3
Views: 890

A couple more points: (1) Ciphertext should contain no evident structure, and thus should be incompressible. Detectable structure would allow for easier cryptanalysis, all else equal. Thus, ideally, C = compress(encrypt(P)) should be no more effective bandwidthwise than E = encrypt(P), and therefore...
by cologic
2006-07-30 06:51
Forum: Protocol Alley
Topic: Split: Passives and SR's
Replies: 27
Views: 5225

Equality between DC's treatment of passive and active "ops" (those who either get OP in INF or are in $OpList, depending on protocol) should be subordinate to the equality of "ops" and non-"ops". Given that those two either conflict or require passive non-"ops"...
by cologic
2006-07-30 06:43
Forum: Protocol Alley
Topic: Packet Injection
Replies: 11
Views: 2153

How would you elaborate upon your analysis to either justify retaining the situation you perceive or suggest a change to it?
by cologic
2006-07-21 00:26
Forum: Proposals
Topic: windows mobile 5 version
Replies: 2
Views: 999

Well, though I know of no Windows Mobile DC client, there is a Symbian one, and I don't see that in principle the tradeoffs would be that different in terms of bandwidth.
by cologic
2006-07-12 11:49
Forum: Proposals
Topic: Qn 4. Is a File Transfer Status review possible?
Replies: 5
Views: 1039

Stupid?
by cologic
2006-06-03 23:10
Forum: Protocol Alley
Topic: ADC 0.11
Replies: 5
Views: 1577

Well, okay . Though I find it less readable than the HTML 'diff' I already posted. This isn't just a text document, though, and has more complex formatting, tables in particular, so I'm not sure saving as text then diffing would accomplish that much more. The source format is .odt, which doesn't len...
by cologic
2006-06-03 13:51
Forum: Protocol Alley
Topic: ADC 0.11
Replies: 5
Views: 1577

A diff between 0.10 and 0.11.
by cologic
2006-06-01 22:23
Forum: Other Direct Connect tools
Topic: Ratio ??!
Replies: 8
Views: 2111

Though I've seen rather mixed reports of Netlimiter's efficacy and stability from multiple sources. I have little information about the others. One advantage of a limiter built into the client is that it can avoid limiting the client-hub traffic (arguably one might want to, but that's not the tradit...
by cologic
2006-05-11 19:17
Forum: Proposals
Topic: Adding dreamland's list
Replies: 48
Views: 13294

I'm not going to say you are wrong, or that you are right either, I'll give a little example from the real world, the group is called Black People (or whatever you want to call them) and the thing they have "done wrong" is that a higher percentage of black people are in jail compared to h...
by cologic
2006-04-05 00:38
Forum: Proposals
Topic: "move completed folder"?
Replies: 6
Views: 1152

Other threads airing relevant objections, justifications, and responses.
by cologic
2006-04-04 21:39
Forum: Proposals
Topic: Chat feature
Replies: 5
Views: 955

There's a setting to disable usage of control, but it breaks editing multiline messages.
by cologic
2006-03-31 11:34
Forum: Proposals
Topic: Unified TTH
Replies: 18
Views: 3219

Less metaphorically: hash functions tend to be relatively poorly understood among cryptographic constructions, and as such have been broken fairly frequently. The Hashing Function Lounge devotes a column to showing which are broken. Note that MD4 (which eMule has used, though they're transitioning t...
by cologic
2006-03-31 10:12
Forum: Proposals
Topic: Unified TTH
Replies: 18
Views: 3219

(1) "compatibility hashes" tend to reduce functionality to a lowest common denominator; for example, DC++ is apparently moving towards replacing rollback with TTH verification (see the advanced TTH resume), which requires hash constructions of a certain type and granularity to function tol...
by cologic
2006-03-31 08:17
Forum: Proposals
Topic: Unified TTH
Replies: 18
Views: 3219

I answered this already. Gnutella is (sometimes; it can use SHA1 too, but its Merkle trees are of Tiger form) compatible. The Bitzi link shows that TTHes appearing isn't theoretical, but that someone does, in fact, retain a database of files indexed by TTH accessible for both Gnutella and DC. This m...
by cologic
2006-03-30 11:51
Forum: Proposals
Topic: Unified TTH
Replies: 18
Views: 3219

Did you read my whole post?
by cologic
2006-03-30 11:29
Forum: Proposals
Topic: Unified TTH
Replies: 18
Views: 3219

What's a unified TTH?

Gnutella uses compatible hashes, in any case, and Bitzi indexes them.
by cologic
2006-03-27 12:33
Forum: Proposals
Topic: Sharing Profiles
Replies: 25
Views: 5859

No. It's still a protocol issue, regardless of slightly less ugly hacks in DC++.
by cologic
2006-03-24 20:01
Forum: Protocol Alley
Topic: ADC Clients and Hubs
Replies: 3
Views: 1454

This DC++ FAQ entry has a list of hubs from which one could seed, though I agree it probably belongs in a Wiki, particularly as that FAQ's DC++-specific (largely).
by cologic
2006-03-02 10:41
Forum: Proposals
Topic: disable/restrict use of bandwidth limiters
Replies: 37
Views: 9103

These two threads discuss a ratings system. (Another interesting post by Wisp came up in that search. Arguably per-user ratings have fewer problems with what he seems to want than a single ratio though.)
by cologic
2006-03-01 15:59
Forum: Proposals
Topic: disable/restrict use of bandwidth limiters
Replies: 37
Views: 9103

by cologic
2006-02-25 13:49
Forum: Proposals
Topic: Default minimum Slot settings
Replies: 21
Views: 3897

Whilst I'm unsure of the morality or ethicality of said effort, arguably allowing or encouraging hubs to rely more on clients subverting users' intentions in an untrusted environment renders such clients themselves more effectively subvertible, eroding system robustness.
by cologic
2006-02-24 16:24
Forum: Proposals
Topic: Default minimum Slot settings
Replies: 21
Views: 3897

FCN-Eki, I agree. It's tragic the world hasn't acquired network connections faster than 512Kbps.
by cologic
2006-02-24 14:16
Forum: Proposals
Topic: Default minimum Slot settings
Replies: 21
Views: 3897

Must we, surely?
by cologic
2006-02-11 12:25
Forum: Proposals
Topic: Sharing Profiles
Replies: 25
Views: 5859

Not in NMDC.
by cologic
2006-01-12 07:19
Forum: Proposals
Topic: Search for alternates by Name
Replies: 29
Views: 5769

Hurrah for popular demand for file corruption.
by cologic
2006-01-09 12:12
Forum: Proposals
Topic: Being able to see up/down ratio of clients
Replies: 10
Views: 1470

Now, let's apply this to DRM. In DRM, the attacker is *also the recipient*. It's not Alice and Bob and Carol, it's just Alice and Bob. Alice sells Bob a DVD. She sells Bob a DVD player. The DVD has a movie on it -- say, Pirates of the Caribbean -- and it's enciphered with an algorithm called CSS --...
by cologic
2006-01-02 11:34
Forum: Proposals
Topic: autodownload of files mentioned in sfv
Replies: 5
Views: 966

Problem:
Sometimes, people propose things that may sound feasible, would undermine the integrity of files on the DC network.

Idea for solution:
I find that link to CRC32 spoofing I posted in some other thread here.
by cologic
2005-12-25 22:13
Forum: Programmer's Help
Topic: Persistent download history
Replies: 12
Views: 2848

For the last year (since some 0.67x version, I guess), if(u->getTTH() != NULL) { params["tth"] = u->getTTH()->toBase32(); } has existed in UploadManager.cpp. I haven't tested it to work, nor have I ever intentionally used it, but support code does ...
by cologic
2005-12-23 12:49
Forum: Programmer's Help
Topic: wxWidgets
Replies: 2
Views: 812

While wxWidgets has flaws too, and I will avoid suggesting any specific toolkit, WTL's flaw is perhaps more important. It has proven problematic to locate a free (either libre or gratis) development environment supporting WTL, because it relies on ATL... This is suboptimal for an open-source program...
by cologic
2005-12-22 23:34
Forum: Developer's resort
Topic: CVS todo list?
Replies: 15
Views: 1304

Some wouldn't regard that as a bug...
by cologic
2005-12-20 18:55
Forum: Proposals
Topic: Remove user from queue if to slow
Replies: 30
Views: 7682

That might prove useful anyway, under the XP SP2 TCP/IP stack.
by cologic
2005-12-20 13:15
Forum: Developer's resort
Topic: ADC 1.0 specification draft issues.
Replies: 1
Views: 373

ADC 1.0 specification draft issues.

This seems a more appropriate place than the wiki. Get some trivialities dealt with, the mass of CSEs in particular: ⋅ "like it to stand for, Advanced DC". Comma splice error. ⋅ "a|b means a or b, either a or b may be used" has another CSE. ⋅ CSE in "port must always be...
by cologic
2005-12-10 19:27
Forum: Proposals
Topic: Block certain private messages
Replies: 34
Views: 9315

But I don't think, that DC++ needs less options. Just some of them could be hidden until you press "Advanced" button, or smth like that... What, Settings->Advanced->Experts Only->No, really, I'm an expert->Show me the super-hidden options? DC++ already has what you're talking about, and it seems in...
by cologic
2005-12-08 21:26
Forum: Proposals
Topic: Encryption Capable DC++ ?
Replies: 24
Views: 5481

Wisp, are you sure you don't want an existing anonymous P2P system? (A)DC would seem to lose whatever unique value it has to this. Further, these sorts of networks are tricky and subtle to design securely.
by cologic
2005-12-07 16:09
Forum: Proposals
Topic: Encryption Capable DC++ ?
Replies: 24
Views: 5481

Wisp wrote:The only downside is that anonimity can attract childporn traders or muslim terrorists, but in that case hub owners could easily ban the offenders, and the hub itself is always trackable by IP.

Freenet's philosophy is worth keeping in mind, as well.
by cologic
2005-12-03 11:52
Forum: Protocol Alley
Topic: QT Lock / Key verification
Replies: 6
Views: 1977

This wiki page provides guidance, if you've not seen it.
by cologic
2005-12-03 09:55
Forum: Proposals
Topic: Encryption Capable DC++ ?
Replies: 24
Views: 5481

See these three threads, as well as
http://cvs.sourceforge.net/viewcvs.py/dcplusplus/dcplusplus/changelog.txt?view=markup/ wrote:* Added basic SSL encryption support (ADC only)
in the changelog of the DC++ version currently under development.
by cologic
2005-10-31 18:27
Forum: Protocol Alley
Topic: Encrypted Transfers
Replies: 17
Views: 5138

cyberal, ADC 0.7 explicitly anticipated SSL:
[quote]Addresses are always sent as x.x.x.x:port for IPv4 and RFC2732 ([x:x:x:x:x:x:x:x]:port) with following :port for IPv6 (port must always be specified, default ports don’t exist). Hub addresses must always be specified in url form, with “adcâ€
by cologic
2005-10-31 10:20
Forum: Protocol Alley
Topic: Encrypted Transfers
Replies: 17
Views: 5138

Pothead, this DC++ wiki page contains a discussion a comprise which avoids the potential performance issue you refer to. Compression differs from encryption, but in this case from whom is one encrypting it? C-H encryption doesn't defend from the hub (since it has to see them) or from other users (wh...
by cologic
2005-01-23 13:14
Forum: Feature Discussion (Archived)
Topic: How to make hashing more practical
Replies: 21
Views: 6373

Not, unless they decide to share the offending file. [irony]... snip silly, even in irony, strawman ...[/irony] seriously!!!, TTH is a new thing , and the "community" has done ok this far. I rue my deletion of those screenshots showing such gems as 5 TTHes across the six instances of a large file f...
by cologic
2005-01-23 12:50
Forum: Feature Discussion (Archived)
Topic: some other kind of priority queing for uploads... + notes.
Replies: 13
Views: 3297

often i know that a particular user has a better download location. like at the moment - i have 2 dudes downloading "best of Muppet Show" with speeds as low as one binary kilobyte (yes, ~1024 bytes) in second. a quick search shows me that there are 4 sources 3 of them at T3. i just am not beleaving...
by cologic
2005-01-18 21:40
Forum: Feature Discussion (Archived)
Topic: some other kind of priority queing for uploads... + notes.
Replies: 13
Views: 3297

You're sharing files you wish others not to download?
by cologic
2005-01-16 14:04
Forum: Feature Discussion (Archived)
Topic: some other kind of priority queing for uploads... + notes.
Replies: 13
Views: 3297

Settings -> Sharing -> Automatically open an extra slot if speed is below ___ kB/s
by cologic
2005-01-12 17:42
Forum: Feature Discussion (Archived)
Topic: Unfinished downloads to Download Dir
Replies: 3
Views: 1435

This has been asked and answered; further, many problems occur when people act according to your suggestion.
by cologic
2004-12-27 11:16
Forum: Protocol Alley
Topic: Encryption?
Replies: 78
Views: 63947

There's yaSSL, which is GPL and doesn't rely on OpenSSL...
by cologic
2004-11-21 10:49
Forum: Protocol Alley
Topic: Spidering hubs
Replies: 8
Views: 2811

Oh, there's ambiguity here between 'robots' and 'robots.txt', I guess, whoops. I'm referring to what yakko wants, the robots.txt protocol.
by cologic
2004-11-21 01:09
Forum: Feature Discussion (Archived)
Topic: Manual connect address
Replies: 6
Views: 1082

You spent $MINUTES creating a mockup GUI and didn't bother peeking into the File menu and looking at the fourth entry, or typing Ctrl-Q? Wow.
by cologic
2004-11-20 17:47
Forum: Protocol Alley
Topic: Spidering hubs
Replies: 8
Views: 2811

It sounds like you (yakko) need an authentication system. Relying on politeness to secure an entity in a network under steady legal attack is shortsighted.

djechelon: I would support explicitly supporting no robots-like protocol. Don't let hubowners hide behind false security.
by cologic
2004-11-20 17:02
Forum: Protocol Alley
Topic: Spidering hubs
Replies: 8
Views: 2811

No hub putting itself on a hublist is trying very hard to be private.
by cologic
2004-11-10 07:36
Forum: Feature Discussion (Archived)
Topic: Adding files to queue from .sfv file
Replies: 14
Views: 3929

No, it isn't, and no, it doesn't.