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* Add new helper zap which zeros a vector, clears it, and then callslloyd2012-11-291-0/+5
| | | | shrink_to_fit to actually deallocate memory.
* Fairly huge update that replaces the old secmem types with std::vectorlloyd2012-05-181-1/+1
| | | | | | using a custom allocator. Currently our allocator just does new/delete with a memset before deletion, and the mmap and mlock allocators have been removed.
* Remove all uses of MemoryRegion::copy outside of internal uses inlloyd2012-05-181-1/+2
| | | | secmem.h. Mostly replaced by assign or copy_mem.
* Convert most of the documentation to reStructured Text, addinglloyd2011-04-041-0/+3
| | | | | | | | | | | | | | | | | | | a makefile to build it with Sphinx (http://sphinx.pocoo.org/). Previously credits.txt listed public domain code sources; instead directly credit the authors in the relevant files and delete that file. Drop the draft FIPS 140 security policy; I can't imagine FIPS 140 validation will ever happen, and if it does, I don't want anything to do with it. Also drop the internals doc, which was so out of date (and incomplete) as to be worthless. Move the tutorials and InSiTo pdfs into old/ for the time being, until anything relevant from them can be filtered out and converted into RST.
* Add a new subclass for BlockCipher BlockCipher_Fixed_Block_Size, whichlloyd2010-10-131-4/+4
| | | | | | | | | | | | | | sets the block size statically and also creates an enum with the size. Use the enum instead of calling block_size() where possible, since that uses two virtual function calls per block which is quite unfortunate. The real advantages here as compared to the previous version which kept the block size as a per-object u32bit: - The compiler can inline the constant as an immediate operand (previously it would load the value via an indirection on this) - Removes 32 bits per object overhead (except in cases with actually variable block sizes, which are very few and rarely used)
* s/BLOCK_SIZE/block_size()/lloyd2010-10-131-4/+4
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* Use size_t rather than u32bit in SymmetricAlgorithmlloyd2010-10-131-1/+1
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* Use size_t rather than u32bit for the blocks argument of encrypt_nlloyd2010-10-121-8/+13
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* Completely remove the second parameter to SecureVector which specifieslloyd2010-09-141-1/+1
| | | | | | | | | | | | | | | | | | | | the initial/default length of the array, update all users to instead pass the value to the constructor. This is a old vestigal thing from a class (SecureBuffer) that used this compile-time constant in order to store the values in an array. However this was changed way back in 2002 to use the same allocator hooks as the rest of the containers, so the only advantage to using the length field was that the initial length was set and didn't have to be set in the constructor which was midly convenient. However this directly conflicts with the desire to be able to (eventually) use std::vector with a custom allocator, since of course vector doesn't support this. Fortunately almost all of the uses are in classes which have only a single constructor, so there is little to no duplication by instead initializing the size in the constructor.
* First set of changes for avoiding use implicit vector->pointer conversionslloyd2010-09-131-1/+1
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* Remove SecureBuffer, which is the fixed-size variant of SecureVector.lloyd2010-03-231-1/+1
| | | | | | | | | | | | | | Add a second template param to SecureVector which specifies the initial length. Change all callers to be SecureVector instead of SecureBuffer. This can go away in C++0x, once compilers implement N2712 ("Non-static data member initializers"), and we can just write code as SecureVector<byte> P{18}; instead
* Un-internal loadstor.h (and its header deps, rotate.h andlloyd2009-12-211-2/+2
| | | | | | | | | | | | | | bswap.h); too many external apps rely on loadstor.h existing. Define 64-bit generic bswap in terms of 32-bit bswap, since it's not much slower if 32-bit is also generic, and much faster if it's not. This may be quite helpful on 32-bit x86 in particular. Change formulation of generic 32-bit bswap. It may be faster or slower depending on the CPU, especially the latency and throuput of rotate instructions, but should be faster on an ideally superscalar processor with rotate instructions (ie, what I expect future CPUs to look more like).
* Make many more headers internal-only.lloyd2009-12-161-2/+2
| | | | | | | | | | | | | 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.lloyd2009-12-161-0/+4
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* Change the BlockCipher interface to support multi-block encryption andlloyd2009-08-111-80/+92
| | | | | | | | | decryption. Currently only used for counter mode. Doesn't offer much advantage as-is (though might help slightly, in terms of cache effects), but allows for SIMD implementations to process multiple blocks in parallel when possible. Particularly thinking here of Serpent; TEA/XTEA also seem promising in this sense, as is Threefish once that is implemented as a standalone block cipher.
* Many source files included bit_ops.h when what was really desired waslloyd2009-05-131-1/+1
| | | | | rotate.h, or when it was not needed at all. Remove or change the includes as needed.
* Thomas Moschny passed along a request from the Fedora packagers which camelloyd2009-03-301-70/+72
| | | | | | | | | | | | | | | 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).
* Rename SymmetricAlgorithm::key to key_schedule to avoid many namelloyd2008-11-091-1/+1
| | | | conflicts/collisions
* Split ciphers into block and stream ciphers. Move base class headerslloyd2008-11-081-0/+367
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