| #!/bin/sh |
| # $OpenBSD: sntrup761.sh,v 1.5 2021/01/08 02:33:13 dtucker 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 unneccesary 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" \ |
| $i | \ |
| case "$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 |