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Defer a memcpy()

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This commit is contained in:
Frank Denis
2015-10-30 20:46:39 +01:00
parent a1e4d3df3f
commit aeb4ff95e4
1 changed files with 2 additions and 2 deletions
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src/libsodium/crypto_aead/aes256gcm/aesni/aead_aes256gcm_aesni.c
+2 -2
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@@ -638,7 +638,6 @@ crypto_aead_aes256gcm_decrypt_afternm(unsigned char *m, unsigned long long *mlen
CRYPTO_ALIGN(16) unsigned char fb[16];
(void) nsec;
memcpy(H, ctx->H, sizeof H);
if (clen > 16ULL * (1ULL << 32) - 16ULL) {
abort();
}
@@ -649,7 +648,7 @@ crypto_aead_aes256gcm_decrypt_afternm(unsigned char *m, unsigned long long *mlen
return -1;
}
mlen = clen - 16;
memcpy(&n2[0], npub, 12);
*(uint32_t *) &n2[12] = 0x01000000;
aesni_encrypt1(T, _mm_load_si128((const __m128i *) n2), rkeys);
@@ -657,6 +656,7 @@ crypto_aead_aes256gcm_decrypt_afternm(unsigned char *m, unsigned long long *mlen
(*(uint64_t *) &fb[0]) = _bswap64((uint64_t)(8 * adlen));
(*(uint64_t *) &fb[8]) = _bswap64((uint64_t)(8 * mlen));
memcpy(H, ctx->H, sizeof H);
Hv = _mm_shuffle_epi8(_mm_load_si128((const __m128i *) H), rev);
_mm_store_si128((__m128i *) H, Hv);
H2v = mulv(Hv, Hv);