1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<link rel="stylesheet" title="Default"
type="text/css" href="todo.css" media="all"/>
<meta http-equiv="Content-Type"
content="text/html; charset=utf-8"/>
<title>TODO for coming releases</title>
</head>
<body>
<h1> Nettle release plans </h1>
<p> This is an attempt at defining a development target for
Nettle-3.1, inspired by similar pages for recent GMP releases.
[Last updated 2015-03-31]</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-3.1 </h1>
<h2> Interface changes </h2>
<p class='done'>
Review public functions in ecc.h, move some to ecc-internal.h, to
enable sane support for other types of curves.
</p>
<h2> New features </h2>
<p class='done'>
Add support for curve25519.<span class='should'> What about the
"x25519" name?</span>
</p>
<p class='done'>
Update chacha-poly1305 to
the <a href='https://tools.ietf.org/html/draft-irtf-cfrg-chacha20-poly1305-08'>current
draft</a>.
</p>
<p class='done'>
Add support for Ed25519 signatures.
</p>
<p class='done'>
Interface tweaks. EdDSA, Curve25519, base64.
</p>
<p class='wish'>
Add larger "safe" curves, e.g., M-383, curve41417 and E-521.
</p>
<p class='wish'>
Add functions for converting ECC points to and from ANSI x9.62.
</p>
<p class='wish'>
Use side-channel silent GMP functions for RSA and DSA. May require
additional interface changes, to use mpn functions.
</p>
<p class='done'>
Make it possible to build nettle and hogweed using mini-gmp.
</p>
<p class='postpone'>
Side-channel silent mem_equalp.
</p>
<h2> Optimizations </h2>
<p class='done'>
Support for using AES acceleration.
</p>
<p class='postponed'>
Assembly optimizations for ARMv8 (64-bit).
</p>
<p class='wish'>
Further optimizations of curve25519 and EdDSA, in particular,
radix 51 modp operations,
and <a href='http://www.hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html#addition-add-2008-hwcd-3'>more
efficient</a> point addition.
</p>
<h2> Miscellaneous </h2>
<p class='postpone'>
Use more functions from GMP-6 and later, when available:
mpn_sec_add_1, mpn_sec_tabselect, mpn_sec_invert, mpn_cnd_swap,
...
</p>
<h2> Documentation </h2>
<p class='done'>
Document curve25519.
</p>
<p class='done'>
Document EdDSA.
</p>
<h2> Build system </h2>
<p class='done'>
Support for fat binaries on ARM and x86_64, selecting code at
runtime depending on cpu capabilities.
</p>
<p class='done'>
Fix the handling of optional C source files with make dist.
</p>
<p class='done'>
Stop using the nonstandard <tt>.po</tt> extension.
</p>
<p class='done'>
Reconsider assembly make rules, going back to an .asm.o: rule
might work better with Solaris' make.
</p>
<p class='postponed'>
Update AX_CREATE_STDINT_H to the latest version.
</p>
<h2> Testing </h2>
<p> Since xenofarm isn't up and running, do some manual testing:
</p>
<ul>
<li class='done'> x86_64-linux-gnu</li>
<li class='done'> x86-linux-gnu</li>
<li class='done'> x86_64-freebsd</li>
<li class='done'> x86-w*ndows (using cross compiler and wine)</li>
<li class='done'> x86_64-w*ndows (using cross compiler and wine)</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='done'> armv7-linux-gnu (pandaboard test platform)</li>
<li class='wish'> armv7-android </li>
<li class='done'> sparc32-solaris10</li>
<li class='done'> sparc64-solaris10</li>
</ul>
<h1> Changes under consideration for later releases </h1>
<p> These are some other 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'>
Reorganize private key operations. Need to support RSA with and
without blinding, and DSA according to spec and some deterministic
variant (like putty
or <a href='http://tools.ietf.org/html/rfc6979'>RFC6979</a>), 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>
</body>
</html>
|
