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* Eliminate the constant size_t values in SymmetricAlgorithm that givelloyd2010-10-281-1/+1
| | | | | | | | | | | | | | | | | | | the parameters of the key length. Instead define a new function which returns a simple object which contains this information. This definitely breaks backwards compatability, though only with code that directly manipulates low level objects like BlockCipher*s directly, which is probably relatively rare. Also remove some deprecated accessor functions from lookup.h. It turns out block_size_of and output_size_of are being used in the TLS code; I need to remove them from there before I can delete these entirely. Really that didn't make much sense, because they assumed all implementations of a particular algorithm will have the same specifications, which is definitely not necessarily true, especially WRT key length. It is much safer (and probably simpler) to first retrieve an instance of the actual object you are going to use and then ask it directly.
* s/BLOCK_SIZE/block_size()/lloyd2010-10-131-6/+10
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* Use size_t instead of u32bit in entropy and rnglloyd2010-10-122-8/+8
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* Remove more implicit vector to pointer conversionslloyd2010-09-141-6/+4
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* Handle the case that container size() returns something other than u32bitlloyd2010-09-141-5/+3
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* Rename MemoryRegion::destroy to MemoryRegion::clear to match STLlloyd2010-09-081-1/+1
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* Big, invasive but mostly automated change, with a further attempt atlloyd2010-09-071-1/+1
| | | | | | | | | | | | | | harmonising MemoryRegion with std::vector: The MemoryRegion::clear() function would zeroise the buffer, but keep the memory allocated and the size unchanged. This is very different from STL's clear(), which is basically the equivalent to what is called destroy() in MemoryRegion. So to be able to replace MemoryRegion with a std::vector, we have to rename destroy() to clear() and we have to expose the current functionality of clear() in some other way, since vector doesn't support this operation. Do so by adding a global function named zeroise() which takes a MemoryRegion which is zeroed. Remove clear() to ensure all callers are updated.
* Yet more Doxygen commentslloyd2010-06-162-12/+18
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* Make many more headers internal-only.lloyd2009-12-161-1/+1
| | | | | | | | | | | | | Fixes for the amalgamation generator for internal headers. Remove BOTAN_DLL exporting macros from all internal-only headers; the classes/functions there don't need to be exported, and avoiding the PIC/GOT indirection can be a big win. Add missing BOTAN_DLLs where necessary, mostly gfpmath and cvc For GCC, use -fvisibility=hidden and set BOTAN_DLL to the visibility __attribute__ to export those classes/functions.
* Full working amalgamation build, plus internal-only headers concept.lloyd2009-12-161-7/+0
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* Rename/remove some secmem member variables for better matching with STLlloyd2009-11-171-3/+3
| | | | | | | | containers (specifically vector). Rename is_empty to empty Remove has_items Rename create to resize
* Remove the 'realname' attribute on all modules and cc/cpu/os info files.lloyd2009-10-291-2/+0
| | | | | Pretty much useless and unused, except for listing the module names in build.h and the short versions totally suffice for that.
* Remove all exception specifications. The way these are designed in C++ islloyd2009-10-222-2/+2
| | | | | | just too fragile and not that useful. Something like Java's checked exceptions might be nice, but simply killing the process entirely if an unexpected exception is thrown is not exactly useful for something trying to be robust.
* Add a script that reads the output of print_deps.py and rewriteslloyd2009-07-151-1/+1
| | | | | | the info.txt files with the right module dependencies. Apply it across the codebase.
* Thomas Moschny passed along a request from the Fedora packagers which camelloyd2009-03-302-2/+6
| | | | | | | | | | | | | | | up during the Fedora submission review, that each source file include some text about the license. One handy Perl script later and each file now has the line Distributed under the terms of the Botan license after the copyright notices. While I was in there modifying every file anyway, I also stripped out the remainder of the block comments (lots of astericks before and after the text); this is stylistic thing I picked up when I was first learning C++ but in retrospect it is not a good style as the structure makes it harder to modify comments (with the result that comments become fewer, shorter and are less likely to be updated, which are not good things).
* In the X9.31 PRNG, move the code that rekeys the cipher and generates V tolloyd2009-01-312-44/+53
| | | | | | | | a new member function rekey, calling it from both reseed and add_entropy. Previously add_entropy worked without this because the PRNG would reseed itself automatically if it was not at the point when randomize() was called, but once this was removed it was necessary to ensure a rekey kicked off, if appropriate, when calling add_entropy.
* Major change in RNG semantics: you must call reseed before callinglloyd2009-01-271-1/+1
| | | | randomize, or PRNG_Unseeded will be thrown.
* Check in a branch with a major redesign on how entropy polling is performed.lloyd2009-01-272-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Combine the fast and slow polls, into a single poll() operation. Instead of being given a buffer to write output into, the EntropySource is passed an Entropy_Accumulator. This handles the RLE encoding that xor_into_buf used to do. It also contains a cached I/O buffer so entropy sources do not individually need to allocate memory for that with each poll. When data is added to the accumulator, the source specifies an estimate of the number of bits of entropy per byte, as a double. This is tracked in the accumulator. Once the estimated entropy hits a target (set by the constructor), the accumulator's member function predicate polling_goal_achieved flips to true. This signals to the PRNG that it can stop performing polling on sources, also polls that take a long time periodically check this flag and return immediately. The Win32 and BeOS entropy sources have been updated, but blindly; testing is needed. The test_es example program has been modified: now it polls twice and outputs the XOR of the two collected results. That helps show if the output is consistent across polls (not a good thing). I have noticed on the Unix entropy source, occasionally there are many 0x00 bytes in the output, which is not optimal. This also needs to be investigated. The RLE is not actually RLE anymore. It works well for non-random inputs (ASCII text, etc), but I noticed that when /dev/random output was fed into it, the output buffer would end up being RR01RR01RR01 where RR is a random byte and 00 is the byte count. The buffer sizing also needs to be examined carefully. It might be useful to choose a prime number for the size to XOR stuff into, to help ensure an even distribution of entropy across the entire buffer space. Or: feed it all into a hash function? This change should (perhaps with further modifications) help WRT the concerns Zack W raised about the RNG on the monotone-dev list.
* Split base.h into block_cipher.h and stream_cipher.hlloyd2008-11-081-1/+1
| | | | | | It turned out many files were including base.h merely to get other includes (like types.h, secmem.h, and exceptn.h). Those have been changed to directly include the files containing the declarations that code needs.
* In ANSI_X931_RNG::reseed, only attempt to reseed the X9.31 state iflloyd2008-10-281-7/+10
| | | | the underlying PRNG's reseed was a success.
* Remove lookup.h from X9.31 PRNG, X9.19 MAC, SSLv3 MAC, PBKDF1lloyd2008-09-302-8/+7
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* Rename all modinfo.txt files to info.txt, since they are all (none) oflloyd2008-09-291-0/+0
| | | | | them modules now. In any case there is no distinction so info.txt seems better.
* Move all modules into src/ directorylloyd2008-09-283-0/+198
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