diff --git a/ChangeLog b/ChangeLog index f6b2808b79448cd0853a3ebe5696f7106e3f0600..59f54d5d6073aadc365d0bfa50362db7ea8c975b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2015-03-25 Niels Möller <nisse@diamant.hack.org> + + * ed25519-sha512-pubkey.c: Fix stack overwrite. The digest array + must have room for a complete sha512 digest. + 2015-03-19 Niels Möller <nisse@diamant.hack.org> * Makefile.in (OPT_HOGWEED_SOURCES): Deleted make variable. diff --git a/ed25519-sha512-pubkey.c b/ed25519-sha512-pubkey.c index 677759c38d509cb60f6f2b26ed20141790ebeae5..438446e2e69fb679c6a048bbda5068e79ad1ea60 100644 --- a/ed25519-sha512-pubkey.c +++ b/ed25519-sha512-pubkey.c @@ -43,7 +43,7 @@ ed25519_sha512_public_key (uint8_t *pub, const uint8_t *priv) { const struct ecc_curve *ecc = &_nettle_curve25519; struct sha512_ctx ctx; - uint8_t digest[ED25519_KEY_SIZE]; + uint8_t digest[SHA512_DIGEST_SIZE]; mp_size_t itch = ecc->q.size + _eddsa_public_key_itch (ecc); mp_limb_t *scratch = gmp_alloc_limbs (itch);