#!/bin/sh # $OpenBSD: sntrup761.sh,v 1.7 2023/01/11 02:13:52 djm Exp $ # Placed in the Public Domain. # AUTHOR="supercop-20201130/crypto_kem/sntrup761/ref/implementors" FILES=" supercop-20201130/crypto_sort/int32/portable4/int32_minmax.inc supercop-20201130/crypto_sort/int32/portable4/sort.c supercop-20201130/crypto_sort/uint32/useint32/sort.c supercop-20201130/crypto_kem/sntrup761/ref/uint32.c supercop-20201130/crypto_kem/sntrup761/ref/int32.c supercop-20201130/crypto_kem/sntrup761/ref/paramsmenu.h supercop-20201130/crypto_kem/sntrup761/ref/params.h supercop-20201130/crypto_kem/sntrup761/ref/Decode.h supercop-20201130/crypto_kem/sntrup761/ref/Decode.c supercop-20201130/crypto_kem/sntrup761/ref/Encode.h supercop-20201130/crypto_kem/sntrup761/ref/Encode.c supercop-20201130/crypto_kem/sntrup761/ref/kem.c " ### set -e cd $1 echo -n '/* $' echo 'OpenBSD: $ */' echo echo '/*' echo ' * Public Domain, Authors:' sed -e '/Alphabetical order:/d' -e 's/^/ * - /' < $AUTHOR echo ' */' echo echo '#include <string.h>' echo '#include "crypto_api.h"' echo # Map the types used in this code to the ones in crypto_api.h. We use #define # instead of typedef since some systems have existing intXX types and do not # permit multiple typedefs even if they do not conflict. for t in int8 uint8 int16 uint16 int32 uint32 int64 uint64; do echo "#define $t crypto_${t}" done echo for i in $FILES; do echo "/* from $i */" # Changes to all files: # - remove all includes, we inline everything required. # - make functions not required elsewhere static. # - rename the functions we do use. # - remove unnecessary defines and externs. sed -e "/#include/d" \ -e "s/crypto_kem_/crypto_kem_sntrup761_/g" \ -e "s/^void /static void /g" \ -e "s/^int16 /static int16 /g" \ -e "s/^uint16 /static uint16 /g" \ -e "/^extern /d" \ -e '/CRYPTO_NAMESPACE/d' \ -e "/^#define int32 crypto_int32/d" \ -e 's/[ ]*$//' \ $i | \ case "$i" in # Use int64_t for intermediate values in int32_MINMAX to prevent signed # 32-bit integer overflow when called by crypto_sort_uint32. */int32_minmax.inc) sed -e "s/int32 ab = b ^ a/int64_t ab = (int64_t)b ^ (int64_t)a/" \ -e "s/int32 c = b - a/int64_t c = (int64_t)b - (int64_t)a/" ;; */int32/portable4/sort.c) sed -e "s/void crypto_sort/void crypto_sort_int32/g" ;; */uint32/useint32/sort.c) sed -e "s/void crypto_sort/void crypto_sort_uint32/g" ;; # Remove unused function to prevent warning. */crypto_kem/sntrup761/ref/int32.c) sed -e '/ int32_div_uint14/,/^}$/d' ;; # Remove unused function to prevent warning. */crypto_kem/sntrup761/ref/uint32.c) sed -e '/ uint32_div_uint14/,/^}$/d' ;; # Default: pass through. *) cat ;; esac echo done