From 585c917691fba2507c5b179255f382b76902bb9a Mon Sep 17 00:00:00 2001 From: darentuzi Date: Tue, 14 Mar 2017 16:39:44 +0200 Subject: [PATCH] Specify "524,288" iterations instead of "500,000" CryptoNight does exactly 524,288 iterations over the scratchpad as defined in CNS008, saying 500,000 could be confusing. I know its meant to give a rough idea (around 500k) to the reader but if you are reading the code, might as well know the exact number. --- src/crypto/slow-hash.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/src/crypto/slow-hash.c b/src/crypto/slow-hash.c index 385808c0..dca58195 100644 --- a/src/crypto/slow-hash.c +++ b/src/crypto/slow-hash.c @@ -494,7 +494,7 @@ void slow_hash_free_state(void) * buffer of pseudorandom data by hashing the supplied data. It then uses this * random data to fill a large 2MB buffer with pseudorandom data by iteratively * encrypting it using 10 rounds of AES per entry. After this initialization, - * it executes 500,000 rounds of mixing through the random 2MB buffer using + * it executes 524,288 rounds of mixing through the random 2MB buffer using * AES (typically provided in hardware on modern CPUs) and a 64 bit multiply. * Finally, it re-mixes this large buffer back into * the 200 byte "text" buffer, and then hashes this buffer using one of four @@ -578,8 +578,8 @@ void cn_slow_hash(const void *data, size_t length, char *hash) U64(b)[0] = U64(&state.k[16])[0] ^ U64(&state.k[48])[0]; U64(b)[1] = U64(&state.k[16])[1] ^ U64(&state.k[48])[1]; - /* CryptoNight Step 3: Bounce randomly 1 million times through the mixing buffer, - * using 500,000 iterations of the following mixing function. Each execution + /* CryptoNight Step 3: Bounce randomly 1,048,576 times (1<<20) through the mixing buffer, + * using 524,288 iterations of the following mixing function. Each execution * performs two reads and writes from the mixing buffer. */ @@ -895,8 +895,8 @@ void cn_slow_hash(const void *data, size_t length, char *hash) U64(b)[0] = U64(&state.k[16])[0] ^ U64(&state.k[48])[0]; U64(b)[1] = U64(&state.k[16])[1] ^ U64(&state.k[48])[1]; - /* CryptoNight Step 3: Bounce randomly 1 million times through the mixing buffer, - * using 500,000 iterations of the following mixing function. Each execution + /* CryptoNight Step 3: Bounce randomly 1,048,576 times (1<<20) through the mixing buffer, + * using 524,288 iterations of the following mixing function. Each execution * performs two reads and writes from the mixing buffer. */