-----BEGIN PGP SIGNED MESSAGE----- Soobok Lee wrote: > As I and David Hopwood suggested in the list, > > NFC(casefold(x)) or NFKC(casefold(x)) are not correct for <I dot above> > and <I><dot above>.
I suggest that the detail of this should be discussed on the [EMAIL PROTECTED] list. Suffice it to say that it would be irresponsible to proceed with publication of the stringprep or nameprep draft just yet. I intend to propose a replacement for stringprep/nameprep that is simpler, more efficient, and that takes account of all the comments that have been made (including Hangul normalisation, BiDi, and spoofing, but excluding TC/SC). > The steps for preparing strings are: > > 1) Map -- For each character in the input, check if it has a mapping > and, if so, replace it with its mapping. This is described in Section 4. > > 2) Normalize -- Possibly normalize the result of step 1 using Unicode > normalization. This is described in Section 5. > > 3) Look for prohibited output -- Check for any characters that are not > allowed in the output. If any are found, return an error. This is > described in Section 6. > > The above steps MUST be performed in the order given to comply with this > specification." > > Please suggest a proof that this last enforcement is necessary and sufficient. > > I suggest the last "MUST" be changed to "MAY". That would make the problem worse. - -- David Hopwood <[EMAIL PROTECTED]> Home page & PGP public key: http://www.users.zetnet.co.uk/hopwood/ RSA 2048-bit; fingerprint 71 8E A6 23 0E D3 4C E5 0F 69 8C D4 FA 66 15 01 Nothing in this message is intended to be legally binding. If I revoke a public key but refuse to specify why, it is because the private key has been seized under the Regulation of Investigatory Powers Act; see www.fipr.org/rip -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv iQEVAwUBPGjdHTkCAxeYt5gVAQGZYAgAgqrqFmiuTM2USjJjXftsZp0OaaZcQ9u3 /zhL726xNoOCdBrdt416WRt9tpLlvbVHQfHWceSdC7fukmaA+fHJZYxSzD5ZE3B7 Aw/fZwjoMAfjVCmTJXwq/++4HNdfr6sNgNJTM/ekJj+jDhIMmFqQ/bTqgts1d5Z0 XrkMco+yxqN0sJbol+goRZDknZNvE2xF0KUl6IAACHxnYwKttdXTWRf2KCEU4p4n Gb/pZDBjUWdrYs7U77YhivpmJgQVMjYHHJGCmnM8DNfYah8Kab1wy2y94hwM/yo7 pwAwZIqQWj08v2odJK64tibO6ilzv7YcQ9qEcfgr474qUY/VEguH1w== =qUyj -----END PGP SIGNATURE-----
