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Crypto: Add optimized SHA-512 and SHA-256 assembly implementations for x86_64 and x86. This improves speed by 30%.

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This commit is contained in:
Mounir IDRASSI
2017-06-23 02:07:32 +02:00
parent ab7b5dc685
commit 546d6cff44
28 changed files with 5408 additions and 884 deletions
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21
src/Common/Pkcs5.c
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@@ -327,6 +327,12 @@ void hmac_sha512
char* buf = hmac.k;
int b;
char key[SHA512_DIGESTSIZE];
#if defined (DEVICE_DRIVER) && !defined (_WIN64)
KFLOATING_SAVE floatingPointState;
NTSTATUS saveStatus = STATUS_SUCCESS;
if (HasSSE2() && HasMMX())
saveStatus = KeSaveFloatingPointState (&floatingPointState);
#endif
/* If the key is longer than the hash algorithm block size,
let key = sha512(key), as per HMAC specifications. */
@@ -369,6 +375,11 @@ void hmac_sha512
hmac_sha512_internal (d, ld, &hmac);
#if defined (DEVICE_DRIVER) && !defined (_WIN64)
if (NT_SUCCESS (saveStatus) && (HasSSE2() && HasMMX()))
KeRestoreFloatingPointState (&floatingPointState);
#endif
/* Prevent leaks */
burn (&hmac, sizeof(hmac));
burn (key, sizeof(key));
@@ -408,6 +419,12 @@ void derive_key_sha512 (char *pwd, int pwd_len, char *salt, int salt_len, uint32
char* buf = hmac.k;
int b, l, r;
char key[SHA512_DIGESTSIZE];
#if defined (DEVICE_DRIVER) && !defined (_WIN64)
KFLOATING_SAVE floatingPointState;
NTSTATUS saveStatus = STATUS_SUCCESS;
if (HasSSE2() && HasMMX())
saveStatus = KeSaveFloatingPointState (&floatingPointState);
#endif
/* If the password is longer than the hash algorithm block size,
let pwd = sha512(pwd), as per HMAC specifications. */
@@ -471,6 +488,10 @@ void derive_key_sha512 (char *pwd, int pwd_len, char *salt, int salt_len, uint32
derive_u_sha512 (salt, salt_len, iterations, b, &hmac);
memcpy (dk, hmac.u, r);
#if defined (DEVICE_DRIVER) && !defined (_WIN64)
if (NT_SUCCESS (saveStatus) && (HasSSE2() && HasMMX()))
KeRestoreFloatingPointState (&floatingPointState);
#endif
/* Prevent possible leaks. */
burn (&hmac, sizeof(hmac));