This is probably too late in the discussion, and I certainly don't want to derail any standard being formed. But if it is controversial, I want to offer my own suggestion.
This is a proposal I wrote a year ago, but never spent enough work to push it as a standard: https://bitcointalk.org/index.php?topic=102349.0 It needs some work, but I believe it may be a base for a superior system than what is being proposed here. As the scheme linked above has built-in configurable difficulty and checksums, the word set being used doesn't need to function for checking anymore. You could use any dictionary/language/text generator, and feed it into the system - the software on the other side doesn't need to use the same dictionary. The disadvantage is of course that it cannot encode arbitrary data - it can only be used to generate a random seed. It does have some theoretical advantages, though (see link). -- Pieter On Thu, Oct 24, 2013 at 8:26 PM, slush <sl...@centrum.cz> wrote: > We've reflected many comments about BIP39 wordlist from the community and I > think the wordlist is much better now. Specifically we removed many of > theoretically offensive words as well as we implemented algorithm for > detecting words with similar characters (cat/eat) and we resolved these > duplicities. I'm now quite happy with the wordlist and I want to ask you for > next (final?) round of comments. > > From other features, we added password protection of seed and seed hardening > (against bruteforcing) using Rijndael cipher. This has been chosen because > its blocksize can be 128, 192 or 256 bits, so it fits length of desired > seeds. Also there are Rijndael implementations in every language. Btw > password protection has one interesting feature - plausible deniability. It > allows user to have one mnemonic and by using it with different passwords, > it will generate different BIP32 wallets.... (wink wink) > > I want to be pretty clear that we need to close this topic somehow, because > we want to use such algorithm in Trezor (which deadline is coming quick) and > also other wallet developers want to implement such algorithm into clients > to be compatible with Trezor. There were quite strict requirements for such > algorithm (like the possibility to convert mnemonic to seed as well as seed > to mnemonic) and I think we found a good solution. I'm wildly asking you for > constructive comments, but saying "it's a crap, I don't like it" won't help > anything. > > Thanks, > slush > > > On Thu, Sep 12, 2013 at 6:02 PM, Matthew Mitchell > <matthewmitch...@godofgod.co.uk> wrote: >> >> I removed some more but I haven't added enough back in. It was taking far >> longer than expected so I gave up, but maybe someone else can try to add >> some more: >> >> >> https://github.com/MatthewLM/python-mnemonic/blob/master/mnemonic/wordlist/english.txt >> >> On 12 Sep 2013, at 13:11, Pavol Rusnak <st...@gk2.sk> wrote: >> >> > On 10/09/13 23:03, Matthew Mitchell wrote: >> >> Maybe it would have been better without the aggressive words? >> > >> > I revisited the wordlist and replaced around 67 words that can be >> > found offensive in some context. >> > >> > -- >> > Best Regards / S pozdravom, >> > >> > Pavol Rusnak <st...@gk2.sk> >> > >> > >> > ------------------------------------------------------------------------------ >> > How ServiceNow helps IT people transform IT departments: >> > 1. Consolidate legacy IT systems to a single system of record for IT >> > 2. Standardize and globalize service processes across IT >> > 3. 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