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<title>TODO for coming releases</title>
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<body>
<h1> Nettle release plans </h1>
<p> This is an attempt at defining a development target for
Nettle-2.8, inspired by similar pages for recent GMP releases. [Last
updated 2013-06-25]</p>
<p class='should'>
This really ought to be done before release
</p>
<p class='wish'>
Try to get this done before release
</p>
<p class='done'>
Done!
</p>
<p class='postponed'>
Leave for some later release!
</p>
<h1> Plans for nettle-2.8 </h1>
<p> nettle-2.8 is intended to be a minor API cleanup, with few new
features. </p>
<h2> Interface changes </h2>
<p class='done'>
Change the type of all lengths from <tt>unsigned</tt>
to <tt>size_t</tt>. An ABI change on most 64-bit platforms.
</p>
<p class='done'>
Change argument type of memxor and memxor3 from uint8_t * to void
* (like modern memcpy). Consider them unconditionally part of the
nettle library, with nettle_ prefix on the symbols, and no
AC_REPLACE_FUNCS.
</p>
<p class='should'>
Use the type <tt>uint64_t</tt> for 64-bit block counts in all hash
functions.
</p>
<p class='should'>
Move some internal-use macros from macros.h to nettle-internal.h.
</p>
<p class='should'>
Do separate aes128_ctx, etc, with smaller allocation for subkeys.
</p>
<p class='should'>
Don't require initialization of *dst_length for base*_decode_update.
</p>
<p class='should'>
Rename gcm "iv" to "nonce". Keep old names for backwards
compatibility.
</p>
<p class='wish'>
Add <a href='http://www.cs.ucdavis.edu/~rogaway/papers/eax.pdf'>EAX</a>
mode?
</p>
<h2> Build system </h2>
<p class='should'>
Stop using the nonstandard <tt>.po</tt> extension,
using <tt>.p.o</tt> or some subdirectory instead. Also drop
<tt>CCPIC_MAYBE</tt>, and let the static libraries depend on the
right object files.
</p>
<p class='should'>
Delay building of test programs until <tt>make check</tt>.
</p>
<h2> Testing </h2>
<p> Since xenofarm isn't up and running, do some manual testing:
</p>
<ul>
<li class='should'> x86_64-linux-gnu</li>
<li class='should'> x86_64-freebsd</li>
<li class='should'> x86-linux-gnu</li>
<li class='should'> x86-freebsd</li>
<li class='should'> x86-w*ndows (using cross compiler and wine)</li>
<li class='wish'> x86_64-w*ndows (seems a bit harder since 64-bit
wine is not yet available in debian)</li>
<li class='should'> x86-darwin (needs help from Nettle users)</li>
<li class='should'> x86_64-darwin (needs help from Nettle users)</li>
<li class='should'> armv7-linux-gnu (pandaboard test platform)</li>
<li class='wish'> armv7-android (possible test platform: N10 tablet)</li>
<li class='should'> sparc32-solaris10</li>
<li class='should'> sparc64-solaris10</li>
</ul>
<h1> Plans for nettle-3.0 </h1>
<p> These are some larger API changes under consideration. </p>
<h2> Interface changes </h2>
<p class='should'>
For Merkle-Damgaard hash functions, separate the state and the
buffering. E.g., when using them for HMAC keyed "inner" and
"outer" states, we now get three buffers but we only need one.
</p>
<p class='should'>
Use the nettle_cipher abstraction only for block ciphers (in
particular, exclude arcfour). Use a const for the ctx argument to
nettle_crypt_func.
</p>
<p class='wish'>
Consider making a public interface similar to nettle_aead? With
the above change, it can't use nettle_crypt_func.
</p>
<p class='wish'>
Make it possible to build nettle and hogweed using mini-gmp.
</p>
<p class='should'>
Reorganize private key operations. Need to support RSA with and
without blinding, and DSA according to spec and some deterministic
variant (like putty), and possibly also smartcard versions where
the private key is not available to the library. And without an
explosion of the number of functions.
</p>
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