1#!/bin/sh 2# $OpenBSD: sntrup761.sh,v 1.5 2021/01/08 02:33:13 dtucker Exp $ 3# Placed in the Public Domain. 4# 5AUTHOR="supercop-20201130/crypto_kem/sntrup761/ref/implementors" 6FILES=" 7 supercop-20201130/crypto_sort/int32/portable4/int32_minmax.inc 8 supercop-20201130/crypto_sort/int32/portable4/sort.c 9 supercop-20201130/crypto_sort/uint32/useint32/sort.c 10 supercop-20201130/crypto_kem/sntrup761/ref/uint32.c 11 supercop-20201130/crypto_kem/sntrup761/ref/int32.c 12 supercop-20201130/crypto_kem/sntrup761/ref/paramsmenu.h 13 supercop-20201130/crypto_kem/sntrup761/ref/params.h 14 supercop-20201130/crypto_kem/sntrup761/ref/Decode.h 15 supercop-20201130/crypto_kem/sntrup761/ref/Decode.c 16 supercop-20201130/crypto_kem/sntrup761/ref/Encode.h 17 supercop-20201130/crypto_kem/sntrup761/ref/Encode.c 18 supercop-20201130/crypto_kem/sntrup761/ref/kem.c 19" 20### 21 22set -e 23cd $1 24echo -n '/* $' 25echo 'OpenBSD: $ */' 26echo 27echo '/*' 28echo ' * Public Domain, Authors:' 29sed -e '/Alphabetical order:/d' -e 's/^/ * - /' < $AUTHOR 30echo ' */' 31echo 32echo '#include <string.h>' 33echo '#include "crypto_api.h"' 34echo 35# Map the types used in this code to the ones in crypto_api.h. We use #define 36# instead of typedef since some systems have existing intXX types and do not 37# permit multiple typedefs even if they do not conflict. 38for t in int8 uint8 int16 uint16 int32 uint32 int64 uint64; do 39 echo "#define $t crypto_${t}" 40done 41echo 42for i in $FILES; do 43 echo "/* from $i */" 44 # Changes to all files: 45 # - remove all includes, we inline everything required. 46 # - make functions not required elsewhere static. 47 # - rename the functions we do use. 48 # - remove unneccesary defines and externs. 49 sed -e "/#include/d" \ 50 -e "s/crypto_kem_/crypto_kem_sntrup761_/g" \ 51 -e "s/^void /static void /g" \ 52 -e "s/^int16 /static int16 /g" \ 53 -e "s/^uint16 /static uint16 /g" \ 54 -e "/^extern /d" \ 55 -e '/CRYPTO_NAMESPACE/d' \ 56 -e "/^#define int32 crypto_int32/d" \ 57 $i | \ 58 case "$i" in 59 # Use int64_t for intermediate values in int32_MINMAX to prevent signed 60 # 32-bit integer overflow when called by crypto_sort_uint32. 61 */int32_minmax.inc) 62 sed -e "s/int32 ab = b ^ a/int64_t ab = (int64_t)b ^ (int64_t)a/" \ 63 -e "s/int32 c = b - a/int64_t c = (int64_t)b - (int64_t)a/" 64 ;; 65 */int32/portable4/sort.c) 66 sed -e "s/void crypto_sort/void crypto_sort_int32/g" 67 ;; 68 */uint32/useint32/sort.c) 69 sed -e "s/void crypto_sort/void crypto_sort_uint32/g" 70 ;; 71 # Remove unused function to prevent warning. 72 */crypto_kem/sntrup761/ref/int32.c) 73 sed -e '/ int32_div_uint14/,/^}$/d' 74 ;; 75 # Remove unused function to prevent warning. 76 */crypto_kem/sntrup761/ref/uint32.c) 77 sed -e '/ uint32_div_uint14/,/^}$/d' 78 ;; 79 # Default: pass through. 80 *) 81 cat 82 ;; 83 esac 84 echo 85done 86