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Original file line number | Diff line number | Diff line change |
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Version 1.11.14, Not Yet Released | ||
Version 1.11.14, 2015-02-27 | ||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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* The global state object previously used by the library has been removed and no | ||
form of initialization is required to use the library. The global PRNG has | ||
also been removed. LibraryInitializer remains as a stub. | ||
* The global state object previously used by the library has been removed. | ||
This includes the global PRNG. The library can be safely initialized | ||
multiple times without harm. | ||
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The engine code has also been removed, replaced by a much lighter-weight | ||
object registry system which provides lookups in faster time and with less | ||
memory overhead than the previous approach. | ||
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One caveat of the current system with regards to static linking: because only | ||
symbols already mentioned elsewhere in the program are included in the final | ||
link step, few algorithms will be available through the lookup system by | ||
default, even though they were compiled into the library. Your application | ||
must explicitly reference the types you require or they will not end up | ||
being available in the final binary. See also Github issue #52 | ||
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If you intend to build your application against a static library and don't | ||
want to explicitly reference each algo object you might attempt to look up by | ||
string, consider either building with `--via-amalgamation`, or else (much | ||
simpler) using the amalgamation directly. | ||
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* The new `ffi` submodule provides a simple C API/ABI for a number of useful | ||
operations (hashing, ciphers, public key operations, etc) which is easily | ||
accessed using the FFI modules included in many languages. A new Python | ||
wrapper using the Python `ctypes` module is available. The old Boost.Python | ||
wrapper has been removed. | ||
accessed using the FFI modules included in many languages. | ||
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* PBKDF and KDF operations now provide a way to write the desired output | ||
directly to an application-specified area rather than always allocating a new | ||
heap buffer. | ||
* A new Python wrapper (in `src/lib/python/botan.py`) using `ffi` and the Python | ||
`ctypes` module is available. The old Boost.Python wrapper has been removed. | ||
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* HKDF, previously provided using a non-standard interface, now uses the | ||
standard KDF interface and is retreivable using get_kdf. | ||
* Add specialized reducers for P-192, P-224, P-256, and P-384 | ||
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* OCB mode, which provides a fast and constant time AEAD mode without requiring | ||
hardware support, is now supported in TLS, following | ||
draft-zauner-tls-aes-ocb-01. Because this specification is not yet finalized | ||
is not yet enabled by the default policy, and the ciphersuite numbers used are | ||
in the experimental range and may conflict with other uses. | ||
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* Add ability to read TLS policy from text file | ||
* Add ability to read TLS policy from a text file using `TLS::Text_Policy`. | ||
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* The amalgamation now splits off any ISA specific code (for instance, that | ||
requiring SSSE3 instruction sets) into a new file named (for instance) | ||
`botan_all_ssse3.cpp`. This allows the main amalgamation file to be compiled | ||
without any special flags, so `--via-amalgamation` builds actually work now. | ||
This is disabled with the build option `--single-amalgamation-file` | ||
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* PBKDF and KDF operations now provide a way to write the desired output | ||
directly to an application-specified area rather than always allocating a new | ||
heap buffer. | ||
|
||
* HKDF, previously provided using a non-standard interface, now uses the | ||
standard KDF interface and is retrievable using get_kdf. | ||
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* It is once again possible to build the complete test suite without requiring | ||
any boost libraries. This is currently only supported on systems supporting | ||
the readdir interface. | ||
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* Remove use of memset_s which caused problems with amalgamation on OS X. | ||
Github 42, 45 | ||
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* The memory usage of the counter mode implementation has been reduced. | ||
Previously it encrypted 256 blocks in parallel as this leads to a slightly | ||
faster counter increment operation. Instead CTR_BE simply encrypts a buffer | ||
equal in size to the advertised parallelism of the cipher implementation. | ||
This is not measurably slower, and dramatically reduces the memory use of | ||
CTR mode. | ||
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* The memory allocator available on Unix systems which uses mmap and mlock to | ||
lock a pool of memory now checks an environment variable | ||
BOTAN_MLOCK_POOL_SIZE. If this is set to a smaller value then the library | ||
would originally have allocated the user specified size is used. You can also | ||
set it to zero to disable the pool entirely. Previously the allocator would | ||
consume all available mlocked memory, this allows botan to coexist with an | ||
application which wants to mlock memory of its own. | ||
lock a pool of memory now checks environment variable BOTAN_MLOCK_POOL_SIZE | ||
and interprets it as an integer. If the value set to a smaller value then the | ||
library would originally have allocated (based on resource limits) the user | ||
specified size is used instead. You can also set the variable to 0 to | ||
disable the pool entirely. Previously the allocator would consume all | ||
available mlocked memory, this allows botan to coexist with an application | ||
which wants to mlock memory for its own uses. | ||
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* The botan-config script previously installed on Unix systems has been | ||
removed. Its functionality is replaced by the `config` command of the `botan` | ||
tool executable, for example `botan config cflags` instead of `botan-config | ||
--cflags`. | ||
removed. Its functionality is replaced by the `config` command of the | ||
`botan` tool executable, for example `botan config cflags` instead of | ||
`botan-config --cflags`. | ||
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* Added a target for POWER8 processors | ||
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