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| author | NIIBE Yutaka <gniibe@fsij.org> | 2021-05-06 13:06:52 +0900 |
|---|---|---|
| committer | NIIBE Yutaka <gniibe@fsij.org> | 2021-05-06 13:06:52 +0900 |
| commit | 5f814e8a4968c01a7ffc7762bcaf3ce040594caf (patch) | |
| tree | 4f9fcf176cf5c0b5cf195fe396229460bd60ed63 /cipher/ecc-misc.c | |
| parent | ec87511d9cd2dc31434e939b6351d74a38d4ceaa (diff) | |
| download | libgcrypt-5f814e8a4968c01a7ffc7762bcaf3ce040594caf.tar.gz | |
ecc: Fix the input length check for Montgomery curve.
* cipher/ecc-misc.c (_gcry_ecc_mont_decodepoint): Fix the condition.
--
Fixes-commit: 060c378c050e7ec6206358c681a313d6e1967dcf
GnuPG-bug-id: 5423
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
Diffstat (limited to 'cipher/ecc-misc.c')
| -rw-r--r-- | cipher/ecc-misc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/cipher/ecc-misc.c b/cipher/ecc-misc.c index f7f914f6..37b4fa1b 100644 --- a/cipher/ecc-misc.c +++ b/cipher/ecc-misc.c @@ -436,7 +436,7 @@ _gcry_ecc_mont_decodepoint (gcry_mpi_t pk, mpi_ec_t ec, mpi_point_t result) rawmpi = _gcry_mpi_get_buffer (pk, nbytes, &rawmpilen, NULL); if (!rawmpi) return gpg_err_code_from_syserror (); - if (rawmpilen > nbytes + 1) + if (rawmpilen > nbytes + BYTES_PER_MPI_LIMB) { xfree (rawmpi); return GPG_ERR_INV_OBJ; |