Merge pull request #652
c7e6b77
crypto: only check MONERO_USE_SOFTWARE_AES once (moneromooo-monero)74aef21
crypto: use software AES based on the MONERO_USE_SOFTWARE_AES env var (moneromooo-monero)
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@ -187,6 +187,26 @@ STATIC INLINE void xor_blocks(uint8_t *a, const uint8_t *b)
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* @return true if the CPU supports AES, false otherwise
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*/
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STATIC INLINE int force_software_aes(void)
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{
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static int use = -1;
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if (use != -1)
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return use;
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const char *env = getenv("MONERO_USE_SOFTWARE_AES");
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if (!env) {
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use = 0;
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}
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else if (!strcmp(env, "0") || !strcmp(env, "no")) {
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use = 0;
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}
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else {
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use = 1;
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}
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return use;
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}
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STATIC INLINE int check_aes_hw(void)
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{
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int cpuid_results[4];
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@ -509,7 +529,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash)
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size_t i, j;
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uint64_t *p = NULL;
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oaes_ctx *aes_ctx;
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int useAes = check_aes_hw();
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int useAes = !force_software_aes() && check_aes_hw();
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static void (*const extra_hashes[4])(const void *, size_t, char *) =
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{
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