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[cpu] use short defines instead of long checks

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Signed-off-by: r4sas <r4sas@i2pmail.org>
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r4sas 2023-09-17 18:33:42 +00:00
parent 9c25a88707
commit 1857f14be8
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GPG key ID: 66F6C87B98EBCFE2
4 changed files with 29 additions and 16 deletions
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15
libi2pd/Crypto.cpp
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@ -28,11 +28,6 @@
#include "I2PEndian.h"
#include "Log.h"
#if defined(__AES__) && !defined(_MSC_VER) && ((defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_IX86) || defined(__i386__)))
#define SUPPORTS_AES 1
#else
#define SUPPORTS_AES 0
#endif
namespace i2p
{
@ -165,7 +160,7 @@ namespace crypto
// DH/ElGamal
#if !defined(__x86_64__)
#if !IS_X86_64
const int ELGAMAL_SHORT_EXPONENT_NUM_BITS = 226;
const int ELGAMAL_SHORT_EXPONENT_NUM_BYTES = ELGAMAL_SHORT_EXPONENT_NUM_BITS/8+1;
#endif
@ -367,7 +362,7 @@ namespace crypto
BIGNUM * b1 = BN_CTX_get (ctx);
BIGNUM * b = BN_CTX_get (ctx);
// select random k
#if (defined(_M_AMD64) || defined(__x86_64__))
#if IS_X86_64
BN_rand (k, ELGAMAL_FULL_EXPONENT_NUM_BITS, -1, 1); // full exponent for x64
#else
BN_rand (k, ELGAMAL_SHORT_EXPONENT_NUM_BITS, -1, 1); // short exponent of 226 bits
@ -434,7 +429,7 @@ namespace crypto
void GenerateElGamalKeyPair (uint8_t * priv, uint8_t * pub)
{
#if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_IX86) || defined(__i386__)) || defined(_MSC_VER)
#if IS_X86 || defined(_MSC_VER)
RAND_bytes (priv, 256);
#else
// lower 226 bits (28 bytes and 2 bits) only. short exponent
@ -1309,7 +1304,7 @@ namespace crypto
CRYPTO_set_locking_callback (OpensslLockingCallback);*/
if (precomputation)
{
#if (defined(_M_AMD64) || defined(__x86_64__))
#if IS_X86_64
g_ElggTable = new BIGNUM * [ELGAMAL_FULL_EXPONENT_NUM_BYTES][255];
PrecalculateElggTable (g_ElggTable, ELGAMAL_FULL_EXPONENT_NUM_BYTES);
#else
@ -1324,7 +1319,7 @@ namespace crypto
if (g_ElggTable)
{
DestroyElggTable (g_ElggTable,
#if (defined(_M_AMD64) || defined(__x86_64__))
#if IS_X86_64
ELGAMAL_FULL_EXPONENT_NUM_BYTES
#else
ELGAMAL_SHORT_EXPONENT_NUM_BYTES