diff options
Diffstat (limited to 'sntrup761.sh')
| -rw-r--r-- | sntrup761.sh | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/sntrup761.sh b/sntrup761.sh index 4de8dc33479f..d4da9919540b 100644 --- a/sntrup761.sh +++ b/sntrup761.sh @@ -1,5 +1,5 @@ #!/bin/sh -# $OpenBSD: sntrup761.sh,v 1.9 2024/09/16 05:37:05 djm Exp $ +# $OpenBSD: sntrup761.sh,v 1.10 2026/01/20 22:56:11 dtucker Exp $ # Placed in the Public Domain. # AUTHOR="supercop-20240808/crypto_kem/sntrup761/ref/implementors" @@ -87,6 +87,28 @@ for i in $FILES; do */uint32/useint32/sort.c) sed -e "s/void crypto_sort/void crypto_sort_uint32/g" ;; + # Replace Short_random and Small_random with versions that fetch + # entropy in a single operation, then delete urandom32 as unused. + */crypto_kem/sntrup761/compact/kem.c) + sed -e '/ uint32_t urandom32/,/^}$/d' \ + -e '/ void Short_random/i\ +static void Short_random(small *out) {\ + uint32_t L[p];\ + randombytes(L, sizeof(L));\ + Short_fromlist(out, L);\ + explicit_bzero(L, sizeof(L));\ +}' \ + -e '/ void Short_random(/,/^}$/d' \ + -e '/ void Small_random/i\ +static void Small_random(small *out) {\ + int i;\ + uint32_t L[p];\ + randombytes(L, sizeof(L));\ + for (i = 0; i < p; ++i) out[i] = (((L[i] & 0x3fffffff) * 3) >> 30) - 1;\ + explicit_bzero(L, sizeof(L));\ +}' \ + -e '/ void Small_random(/,/^}$/d' + ;; # Remove unused function to prevent warning. */crypto_kem/sntrup761/ref/int32.c) sed -e '/ int32_div_uint14/,/^}$/d' |