void
scrypt(const uint8_t *password, size_t password_len, const uint8_t *salt, size_t salt_len, uint8_t Nfactor, uint8_t rfactor, uint8_t pfactor, uint8_t *out, size_t bytes) {
scrypt_aligned_alloc YX, V;
uint8_t *X, *Y;
uint32_t N, r, p, chunk_bytes, i;
#if !defined(SCRYPT_CHOOSE_COMPILETIME)
scrypt_ROMixfn scrypt_ROMix = scrypt_getROMix();
#endif
#if !defined(SCRYPT_TEST)
static int power_on_self_test = 0;
if (!power_on_self_test) {
power_on_self_test = 1;
if (!scrypt_power_on_self_test())
scrypt_fatal_error("scrypt: power on self test failed");
}
#endif
if (Nfactor > scrypt_maxN)
scrypt_fatal_error("scrypt: N out of range");
if (rfactor > scrypt_maxr)
scrypt_fatal_error("scrypt: r out of range");
if (pfactor > scrypt_maxp)
scrypt_fatal_error("scrypt: p out of range");
N = (1 << (Nfactor + 1));
r = (1 << rfactor);
p = (1 << pfactor);
chunk_bytes = SCRYPT_BLOCK_BYTES * r * 2;
V = scrypt_alloc((uint64_t)N * chunk_bytes);
YX = scrypt_alloc((p + 1) * chunk_bytes);
//printf("%d-%d-%d\n" ,N,r,p);
//printf("%d\n", chunk_bytes);
//printf("%d\n", (uint64_t)N * chunk_bytes);
/* 1: X = PBKDF2(password, salt) */
Y = YX.ptr;
X = Y + chunk_bytes;
scrypt_pbkdf2(password, password_len, salt, salt_len, 1, X, chunk_bytes * p);
/* 2: X = ROMix(X) */
for (i = 0; i < p; i++)
scrypt_ROMix((scrypt_mix_word_t *)(X + (chunk_bytes * i)), (scrypt_mix_word_t *)Y, (scrypt_mix_word_t *)V.ptr, N, r);
/* 3: Out = PBKDF2(password, X) */
scrypt_pbkdf2(password, password_len, X, chunk_bytes * p, 1, out, bytes);
scrypt_ensure_zero(YX.ptr, (p + 1) * chunk_bytes);
scrypt_free(&V);
scrypt_free(&YX);
}
void
scrypt(const uint8_t *password, size_t password_len, const uint8_t *salt, size_t salt_len, uint32_t N, uint8_t *out, size_t bytes, uint8_t *X, uint8_t *Y, uint8_t *V, uint32_t r, uint32_t p)
{
uint32_t chunk_bytes, i;
chunk_bytes = SCRYPT_BLOCK_BYTES * r * 2;
scrypt_pbkdf2(password, password_len, salt, salt_len, 1, X, chunk_bytes * p);
/* 2: X = ROMix(X) */
for (i = 0; i < p; i++)
scrypt_ROMix((scrypt_mix_word_t *)(X + (chunk_bytes * i)), (scrypt_mix_word_t *)Y, (scrypt_mix_word_t *)V, N, r);
/* 3: Out = PBKDF2(password, X) */
scrypt_pbkdf2(password, password_len, X, chunk_bytes * p, 1, out, bytes);
#ifdef SCRYPT_PREVENT_STATE_LEAK
scrypt_ensure_zero(YX.ptr, (p + 1) * chunk_bytes);
#endif
}
void
my_scrypt(const uint8_t *password, size_t password_len, const uint8_t *salt, size_t salt_len, uint8_t *out) {
scrypt_aligned_alloc YX, V;
uint8_t *X, *Y;
#if !defined(SCRYPT_CHOOSE_COMPILETIME)
scrypt_ROMixfn scrypt_ROMix = scrypt_getROMix();
#endif
/*
#if !defined(SCRYPT_TEST)
static int power_on_self_test = 0;
if (!power_on_self_test) {
power_on_self_test = 1;
if (!scrypt_power_on_self_test())
scrypt_fatal_error("scrypt: power on self test failed");
}
#endif
*/
V = scrypt_alloc((uint64_t)512 * chunk_bytes);
YX = scrypt_alloc(2 * chunk_bytes);
/* 1: X = PBKDF2(password, salt) */
Y = YX.ptr;
X = Y + chunk_bytes;
scrypt_pbkdf2(password, password_len, salt, salt_len, 1, X, chunk_bytes);
/* 2: X = ROMix(X) */
scrypt_ROMix((scrypt_mix_word_t *)X, (scrypt_mix_word_t *)Y, (scrypt_mix_word_t *)V.ptr, 512, 1);
/* 3: Out = PBKDF2(password, X) */
scrypt_pbkdf2(password, password_len, X, chunk_bytes, 1, out, 32);
scrypt_ensure_zero(YX.ptr, 2 * chunk_bytes);
scrypt_free(&V);
scrypt_free(&YX);
}