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A few more changes for encryption. Add test that encrypted file can be read.

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This commit is contained in:
Bram Moolenaar
2010-05-21 15:36:08 +02:00
parent 6019078ece
commit f50a2533d0
5 changed files with 86 additions and 37 deletions
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17
runtime/doc/options.txt
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@ -2056,12 +2056,21 @@ A jump table for the options with a short description can be found at |Q_op|.
Method used for encryption when the buffer is written to a file:
*pkzip*
0 PkZip compatible method. A weak kind of encryption.
backwards compatible with Vim 7.2 and older.
Backwards compatible with Vim 7.2 and older.
*blowfish*
1 Blowfish method. Strong encryption. Not compatible
with Vim 7.2 and older.
1 Blowfish method. Strong encryption. Requires Vim 7.3
or later, files can NOT be read by Vim 7.2 and older.
This adds a "seed" to the file, every time you write
the file the encrypted bytes will be different.
When reading an encrypted file 'cryptmethod' will be set automatically
to detected method for the file being read.
to the detected method of the file being read. Thus if you write it
without changing 'cryptmethod' the same method will be used.
Changing 'cryptmethod' does not mark the file as modified, you have to
explicitly write it when not making modifications.
Also see |:X|.
When a new encryption method is added in a later version of Vim, and
the current version does not recognize it, you will get *E821* .
*'cscopepathcomp'* *'cspc'*