Tweaks after review
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@ -24,12 +24,12 @@
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template<unsigned int N, unsigned int K>
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template<unsigned int N, unsigned int K>
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int Equihash<N,K>::InitialiseState(eh_HashState& base_state)
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int Equihash<N,K>::InitialiseState(eh_HashState& base_state)
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{
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{
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uint32_t n = htole32(N);
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uint32_t le_N = htole32(N);
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uint32_t k = htole32(K);
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uint32_t le_K = htole32(K);
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unsigned char personalization[crypto_generichash_blake2b_PERSONALBYTES] = {};
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unsigned char personalization[crypto_generichash_blake2b_PERSONALBYTES] = {};
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memcpy(personalization, "ZcashPoW", 8);
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memcpy(personalization, "ZcashPoW", 8);
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memcpy(personalization+8, &n, 4);
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memcpy(personalization+8, &le_N, 4);
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memcpy(personalization+12, &k, 4);
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memcpy(personalization+12, &le_K, 4);
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return crypto_generichash_blake2b_init_salt_personal(&base_state,
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return crypto_generichash_blake2b_init_salt_personal(&base_state,
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NULL, 0, // No key.
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NULL, 0, // No key.
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N/8,
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N/8,
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@ -37,7 +37,8 @@ int Equihash<N,K>::InitialiseState(eh_HashState& base_state)
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personalization);
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personalization);
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}
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}
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// Big-endian so that array comparison is equivalent to integer comparison
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// Big-endian so that lexicographic array comparison is equivalent to integer
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// comparison
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void EhIndexToArray(const eh_index i, unsigned char* array)
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void EhIndexToArray(const eh_index i, unsigned char* array)
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{
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{
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assert(sizeof(eh_index) == 4);
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assert(sizeof(eh_index) == 4);
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@ -45,7 +46,8 @@ void EhIndexToArray(const eh_index i, unsigned char* array)
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memcpy(array, &bei, sizeof(eh_index));
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memcpy(array, &bei, sizeof(eh_index));
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}
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}
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// Big-endian so that array comparison is equivalent to integer comparison
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// Big-endian so that lexicographic array comparison is equivalent to integer
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// comparison
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eh_index ArrayToEhIndex(const unsigned char* array)
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eh_index ArrayToEhIndex(const unsigned char* array)
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{
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{
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assert(sizeof(eh_index) == 4);
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assert(sizeof(eh_index) == 4);
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