Admin: 2 revisions imported

2022-11-09T14:49:53Z

2 revisions imported

← Older revision	Revision as of 16:49, 9 November 2022
(No difference)

Admin: Fixed randombytes replacement

2014-01-04T13:22:56Z

Fixed randombytes replacement

← Older revision		Revision as of 15:22, 4 January 2014
Line 25:		Line 25:
	cp "randombytes/devurandom.h" "$include/randombytes.h"		cp "randombytes/devurandom.h" "$include/randombytes.h"
	(		(
			echo "#include <windows.h>"
			echo "#include <Wincrypt.h>"
			echo "#pragma comment(lib, \"crypt32.lib\")"
	echo "void randombytes(unsigned char * a,unsigned long long c) {"		echo "void randombytes(unsigned char * a,unsigned long long c) {"
	echo "~~unsigned long long i~~;"		echo "HCRYPTPROV hProvider = 0;"
	echo "~~srand~~(~~time~~(0));"		echo "while (1) {"
	echo "~~for~~ (~~i = 0; i < c;~~ c++, a++) *a = rand() ~~% 256~~;"		echo "if (!CryptAcquireContextW(&hProvider, 0, 0, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT \| CRYPT_SILENT)) { Sleep(1); continue; }"
			echo "if (!CryptGenRandom(hProvider, (DWORD)c, (BYTE*)a)) { CryptReleaseContext(hProvider, 0); Sleep(1); continue; }"
			echo "CryptReleaseContext(hProvider, 0);"
			echo "break;"
			echo "}"
	echo "}"		echo "}"
	) > "$source/randombytes.c"		) > "$source/randombytes.c"

Admin at 16:11, 12 February 2011

2011-02-12T16:11:02Z

New page

To use [[NaCl]] cryptography on Windows, there are two options:
# Use a [[NaCl#C.23_.2F_.Net_implementation|C#/.Net port]]
# Compile the original NaCl code on Windows

A native compile of the original sourcecode will usually give the best results in terms of speed and resemblance to the original library. To make compiling NaCl on windows somewhat less painful, I've written a shellscript that extracts/creates all files needed, including a VS.Net/VisualC++.Net 9 project file.

Note that currently the build script does not support any platform specific optimized implementations of the cryptographic primitives. As a result, performance is usually comparable to or worse than the performance of the C#/.Net code.

The script currently compiles all reference implementations, but only exports a limited set. If anything you need is not exported, this is easy to change by editing the .def file.

The output of this script may also be useful to build the NaCl code for other previously unsupported platforms. It creates a file names sources.lst, which lists all the C source code files to compile. Don't forget to add the (generated) includes directory to the include path.

<pre>#!/bin/sh -e
top="`pwd`/build/windows"
include="$top/include"
source="$top/source"

export LANG=C

rm -rf "$top"
mkdir -p "$top"
mkdir -p "$include"
mkdir -p "$source"

cp "randombytes/devurandom.h" "$include/randombytes.h"
(
echo "void randombytes(unsigned char * a,unsigned long long c) {"
echo "unsigned long long i;"
echo "srand(time(0));"
echo "for (i = 0; i < c; c++, a++) *a = rand() % 256;"
echo "}"
) > "$source/randombytes.c"
echo "source/randombytes.c" > "$top/sources.lst"

macros=`cat MACROS`
prototypesc=`cat PROTOTYPES.c`
prototypescpp=`cat PROTOTYPES.cpp`
cat OPERATIONS | while read o
do
[ -d "$o" ] || continue
ls "$o" | sort | while read p
do
[ -d "$o/$p" ] || continue
[ -f "$o/$p/used" ] || continue
op="${o}_${p}"
doth="$o/$p/ref/api.h"
implementationdir=`dirname $doth`
opi=`echo "$implementationdir" | tr ./- ___`
language=c
echo "$op"
(
to="${source}/${op}"
mkdir -p "$to"
cd "$implementationdir"
cfiles=`ls | grep '\.c$' || :`
sfiles=`ls | grep '\.[sS]$' || :`
(
echo "#ifndef ${o}_H"
echo "#define ${o}_H"
echo ""
echo "#include \"${op}.h\""
echo ""
echo "$macros" | egrep "${o}"'$|'"${o}"'\(|'"${o}"'_' | sed "s/$o/$op/" | while read mop
do
echo "#define ${mop} ${mop}" | sed "s/$op/$o/"
done
echo "#define ${o}_PRIMITIVE \"${p}\""
echo "#define ${o}_IMPLEMENTATION ${op}_IMPLEMENTATION"
echo "#define ${o}_VERSION ${op}_VERSION"
echo ""
echo "#endif"
) > "${to}/${o}.h"
(
echo "#ifndef ${op}_H"
echo "#define ${op}_H"
echo ""
sed 's/[ ]CRYPTO_/ '"${opi}"'_/g' < api.h
echo '#ifdef __cplusplus'
echo '#include <string>'
echo "$prototypescpp" | egrep "${o}"'$|'"${o}"'\(|'"${o}"'_' | sed "s/$o/$opi/"
echo 'extern "C" {'
echo '#endif'
echo "$prototypesc" | egrep "${o}"'$|'"${o}"'\(|'"${o}"'_' | sed "s/$o/$opi/"
echo '#ifdef __cplusplus'
echo '}'
echo '#endif'
echo ""
echo "$macros" | egrep "${o}"'$|'"${o}"'\(|'"${o}"'_' | sed "s/$o/$opi/" | while read mopi
do
echo "#define ${mopi} ${mopi}" | sed "s/$opi/$op/"
done
echo "#define ${op}_IMPLEMENTATION \"${implementationdir}\""
echo "#ifndef ${opi}_VERSION"
echo "#define ${opi}_VERSION \"-\""
echo "#endif"
echo "#define ${op}_VERSION ${opi}_VERSION"
echo ""
echo "#endif"
) > "${to}/${op}.h"

for f in $cfiles $sfiles
do
echo "${op}_${f}"
cp "$f" "${to}/${op}_${f}"
echo "source/${op}/${op}_${f}" >> "$top/sources.lst"
done

cp -p "${to}/$op.h" "$include/$op.h"

[ -f "../selected" ] || continue
cp -p "${to}/$o.h" "$include/$o.h"
)
done
done

(
echo "LIBRARY \"nacl\""
echo "EXPORTS"
echo " crypto_box_curve25519xsalsa20poly1305_ref"
echo " crypto_box_curve25519xsalsa20poly1305_ref_open"
echo " crypto_box_curve25519xsalsa20poly1305_ref_keypair"
echo " crypto_box_curve25519xsalsa20poly1305_ref_beforenm"
echo " crypto_box_curve25519xsalsa20poly1305_ref_afternm"
echo " crypto_box_curve25519xsalsa20poly1305_ref_open_afternm"
) > "$top/nacl.def"

(
echo "<?xml version='1.0' encoding='Windows-1252'?>"
echo "<VisualStudioProject ProjectType='Visual C++' Version='9,00' Name='nacl' RootNamespace='NaCl'>"
echo "<Platforms><Platform Name='Win32' /></Platforms>"
echo "<ToolFiles></ToolFiles>"
echo "<Configurations>"
echo "<Configuration Name='Release|Win32'"
echo "OutputDirectory='\$(ProjectDir)\$(ConfigurationName)' IntermediateDirectory='\$(ConfigurationName)'"
echo "ConfigurationType='2' CharacterSet='2' WholeProgramOptimization='1'>"
echo "<Tool Name='VCCLCompilerTool' AdditionalIncludeDirectories='include\\' />"
echo "<Tool Name='VCLinkerTool' ModuleDefinitionFile='nacl.def' />"
echo "</Configuration>"
echo "</Configurations>"
echo "<References></References>"
echo "<Files>"
echo "<Filter Name='Source Files' Filter='cpp;c;s'>"
sed "s_/_\\\\_g" "$top/sources.lst" | sed "s_^\$.*\$\$_<File RelativePath='\\1' />_"
echo "</Filter>"
echo "<File RelativePath='nacl.def' />"
echo "</Files>"
echo "<Globals></Globals>"
echo "</VisualStudioProject>"
) > "$top/nacl.vcproj"

rm "$top/sources.lst"</pre>

NaCl/Windows - Revision history

Admin: 2 revisions imported

Admin: Fixed randombytes replacement

Admin at 16:11, 12 February 2011