- broken - reimplementing z85 decoder, using hyphens again, doesn't work yet...

This commit is contained in:
git@daemon.de
2014-03-01 11:58:10 +01:00
parent 32b24a08c5
commit b8552af5e9
11 changed files with 363 additions and 68 deletions

25
TODO
View File

@@ -16,30 +16,7 @@ enable formats for secret key exports as well
Add newlines to headers in define.h, so strlen() later catches the whole length.
Z85 headers:
- currently I use "----- BEGIN ... -----" and "----- END ... -----" as
header and footer for various z85 encoded outputs. The problem is, that
the "-" character is part of Z85 chars. An input of 0xc6,0x5a,0x0b,0x13 would
result z85 encoded as: "-----". So, I cannot be sure, when I find a header
delimiter, if it's really a delimiter or legitimate z85 encoded content.
Therefore, another delimiter must be used. "~~~~~ BEGIN .... ~~~~~" seems
to fit best and "~" is unused in Z85.
Then the parser can be enhanced as well. Eg: on startup if a ~ occurs,
ignore input until the first non-~ appears. Then decode input until a
~ or eof appears, ignore everything after. Comments would still be a
problem though. Currently I ignore lines containing whitespaces. But
if a file is read blockwise and the blocksize is very small, then a
comment line may span multiple blocks and isn't recognizable as a
"line" anymore. Maybe, comments shall start and end with a ~ as well, eg:
~ BEGIN KEY ~
~ Hash: 987298347 ~
[z85]
~ END KEY ~
Here I use the same aproach for the headers, since there would also be
the problem how to recognize them properly if a header crosses boundaries
or something. By using this scheme, if a ~ is found everything following
is marked as to be ignored which could be saved as a state when using
blockmode.
Z85 Stream encode: add newline after last.
Check is_utf8 license.
also found in https://gd.meizo.com/_files/lpc/ext/utf8.c