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author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2022-09-28 20:22:31 +0300 |
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committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2022-10-02 16:52:40 +0300 |
commit | 9978fc22045ca7623a6e0cbf704fb48ab1550419 (patch) | |
tree | e5bc31c9e5743bfab685bcf5685647ef5d6a1461 /mpi | |
parent | 0cb29a5736cfcd6bce4ce2495cd0481f0bdb34a4 (diff) | |
download | libgcrypt-9978fc22045ca7623a6e0cbf704fb48ab1550419.tar.gz |
mpi/ec: remove VLA usage
* mpi/ec-nist.c (_gcry_mpi_ec_nist192_mod, _gcry_mpi_ec_nist224_mod)
(_gcry_mpi_ec_nist256_mod, _gcry_mpi_ec_nist384_mod)
(_gcry_mpi_ec_nist521_mod): Avoid VLA for arrays.
* mpi/ec.c (ec_secp256k1_mod): Avoid VLA for arrays.
--
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'mpi')
-rw-r--r-- | mpi/ec-nist.c | 40 | ||||
-rw-r--r-- | mpi/ec.c | 6 |
2 files changed, 23 insertions, 23 deletions
diff --git a/mpi/ec-nist.c b/mpi/ec-nist.c index 69b05a6d..14e3c3ab 100644 --- a/mpi/ec-nist.c +++ b/mpi/ec-nist.c @@ -94,9 +94,9 @@ _gcry_mpi_ec_nist192_mod (gcry_mpi_t w, mpi_ec_t ctx) }; const mpi_limb64_t zero = LIMB_TO64(0); mpi_ptr_t wp; - mpi_size_t wsize = 192 / BITS_PER_MPI_LIMB64; - mpi_limb64_t s[wsize + 1]; - mpi_limb64_t o[wsize + 1]; + mpi_limb64_t s[192 / BITS_PER_MPI_LIMB64 + 1]; + mpi_limb64_t o[DIM(s)]; + const mpi_size_t wsize = DIM(s) - 1; mpi_limb_t mask1; mpi_limb_t mask2; mpi_limb_t s_is_negative; @@ -186,10 +186,10 @@ _gcry_mpi_ec_nist224_mod (gcry_mpi_t w, mpi_ec_t ctx) }; const mpi_limb64_t zero = LIMB_TO64(0); mpi_ptr_t wp; - mpi_size_t wsize = (224 + BITS_PER_MPI_LIMB64 - 1) / BITS_PER_MPI_LIMB64; + mpi_limb64_t s[(224 + BITS_PER_MPI_LIMB64 - 1) / BITS_PER_MPI_LIMB64]; + mpi_limb64_t d[DIM(s)]; + const mpi_size_t wsize = DIM(s); mpi_size_t psize = ctx->p->nlimbs; - mpi_limb64_t s[wsize]; - mpi_limb64_t d[wsize]; mpi_limb_t mask1; mpi_limb_t mask2; mpi_limb_t s_is_negative; @@ -345,12 +345,12 @@ _gcry_mpi_ec_nist256_mod (gcry_mpi_t w, mpi_ec_t ctx) }; const mpi_limb64_t zero = LIMB_TO64(0); mpi_ptr_t wp; - mpi_size_t wsize = (256 + BITS_PER_MPI_LIMB64 - 1) / BITS_PER_MPI_LIMB64; + mpi_limb64_t s[(256 + BITS_PER_MPI_LIMB64 - 1) / BITS_PER_MPI_LIMB64 + 1]; + mpi_limb64_t t[DIM(s)]; + mpi_limb64_t d[DIM(s)]; + mpi_limb64_t e[DIM(s)]; + const mpi_size_t wsize = DIM(s) - 1; mpi_size_t psize = ctx->p->nlimbs; - mpi_limb64_t s[wsize + 1]; - mpi_limb64_t t[wsize + 1]; - mpi_limb64_t d[wsize + 1]; - mpi_limb64_t e[wsize + 1]; mpi_limb_t mask1; mpi_limb_t mask2; mpi_limb_t mask3; @@ -595,15 +595,15 @@ _gcry_mpi_ec_nist384_mod (gcry_mpi_t w, mpi_ec_t ctx) }; const mpi_limb64_t zero = LIMB_TO64(0); mpi_ptr_t wp; - mpi_size_t wsize = (384 + BITS_PER_MPI_LIMB64 - 1) / BITS_PER_MPI_LIMB64; - mpi_size_t psize = ctx->p->nlimbs; + mpi_limb64_t s[(384 + BITS_PER_MPI_LIMB64 - 1) / BITS_PER_MPI_LIMB64 + 1]; + mpi_limb64_t t[DIM(s)]; + mpi_limb64_t d[DIM(s)]; + mpi_limb64_t x[DIM(s)]; #if (BITS_PER_MPI_LIMB64 == BITS_PER_MPI_LIMB) && defined(WORDS_BIGENDIAN) - mpi_limb_t wp_shr32[wsize * LIMBS_PER_LIMB64]; + mpi_limb_t wp_shr32[(DIM(s) - 1) * LIMBS_PER_LIMB64]; #endif - mpi_limb64_t s[wsize + 1]; - mpi_limb64_t t[wsize + 1]; - mpi_limb64_t d[wsize + 1]; - mpi_limb64_t x[wsize + 1]; + const mpi_size_t wsize = DIM(s) - 1; + mpi_size_t psize = ctx->p->nlimbs; mpi_limb_t mask1; mpi_limb_t mask2; mpi_limb_t s_is_negative; @@ -791,8 +791,8 @@ _gcry_mpi_ec_nist384_mod (gcry_mpi_t w, mpi_ec_t ctx) void _gcry_mpi_ec_nist521_mod (gcry_mpi_t w, mpi_ec_t ctx) { - mpi_size_t wsize = (521 + BITS_PER_MPI_LIMB - 1) / BITS_PER_MPI_LIMB; - mpi_limb_t s[wsize]; + mpi_limb_t s[(521 + BITS_PER_MPI_LIMB - 1) / BITS_PER_MPI_LIMB]; + const mpi_size_t wsize = DIM(s); mpi_limb_t cy; mpi_ptr_t wp; @@ -581,9 +581,9 @@ ec_pow2_448 (gcry_mpi_t w, const gcry_mpi_t b, mpi_ec_t ctx) static void ec_secp256k1_mod (gcry_mpi_t w, mpi_ec_t ctx) { - mpi_size_t wsize = (256 + BITS_PER_MPI_LIMB - 1) / BITS_PER_MPI_LIMB; - mpi_limb_t n[wsize + 1]; - mpi_limb_t s[wsize + 1]; + mpi_limb_t s[(256 + BITS_PER_MPI_LIMB - 1) / BITS_PER_MPI_LIMB + 1]; + mpi_limb_t n[DIM(s)]; + const mpi_size_t wsize = DIM(s) - 1; mpi_limb_t cy, borrow; mpi_ptr_t wp; |