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Simplify integerify()

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Make offsets 64 bit in the SSE scrypt impl
This commit is contained in:
Frank Denis 2020-03-14 00:20:23 +01:00
parent 6c4437d987
commit 8e21cab950
2 changed files with 10 additions and 8 deletions
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4
src/libsodium/crypto_pwhash/scryptsalsa208sha256/nosse/pwhash_scryptsalsa208sha256_nosse.c
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@ -160,9 +160,9 @@ blockmix_salsa8(const uint32_t *Bin, uint32_t *Bout, uint32_t *X, size_t r)
static inline uint64_t static inline uint64_t
integerify(const void *B, size_t r) integerify(const void *B, size_t r)
{ {
const uint32_t *X = (const uint32_t *) ((uintptr_t)(B) + (2 * r - 1) * 64); const uint32_t *X = ((const uint32_t *) B) + (2 * r - 1) * 16;
return (((uint64_t)(X[1]) << 32) + X[0]); return ((uint64_t) (X[1]) << 32) + X[0];
} }
/** /**

12
src/libsodium/crypto_pwhash/scryptsalsa208sha256/sse/pwhash_scryptsalsa208sha256_sse.c
View File

@ -213,10 +213,12 @@ blockmix_salsa8_xor(const __m128i *Bin1, const __m128i *Bin2, __m128i *Bout,
* Return the result of parsing B_{2r-1} as a little-endian integer. * Return the result of parsing B_{2r-1} as a little-endian integer.
* Note that B's layout is permuted compared to the generic implementation. * Note that B's layout is permuted compared to the generic implementation.
*/ */
static inline uint32_t static inline uint64_t
integerify(const void *B, size_t r) integerify(const void *B, size_t r)
{ {
return *(const uint32_t *) ((uintptr_t)(B) + (2 * r - 1) * 64); const uint64_t *X = ((const uint64_t *) B) + (2 * r - 1) * 8;
return *X;
} }
/** /**
@ -228,12 +230,12 @@ integerify(const void *B, size_t r)
* multiple of 64 bytes. * multiple of 64 bytes.
*/ */
static void static void
smix(uint8_t *B, size_t r, uint32_t N, void *V, void *XY) smix(uint8_t *B, size_t r, uint64_t N, void *V, void *XY)
{ {
size_t s = 128 * r; size_t s = 128 * r;
__m128i *X = (__m128i *) V, *Y; __m128i *X = (__m128i *) V, *Y;
uint32_t *X32 = (uint32_t *) V; uint32_t *X32 = (uint32_t *) V;
uint32_t i, j; uint64_t i, j;
size_t k; size_t k;
/* 1: X <-- B */ /* 1: X <-- B */
@ -388,7 +390,7 @@ escrypt_kdf_sse(escrypt_local_t *local, const uint8_t *passwd, size_t passwdlen,
/* 2: for i = 0 to p - 1 do */ /* 2: for i = 0 to p - 1 do */
for (i = 0; i < p; i++) { for (i = 0; i < p; i++) {
/* 3: B_i <-- MF(B_i, N) */ /* 3: B_i <-- MF(B_i, N) */
smix(&B[(size_t) 128 * i * r], r, (uint32_t) N, V, XY); smix(&B[(size_t) 128 * i * r], r, N, V, XY);
} }
/* 5: DK <-- PBKDF2(P, B, 1, dkLen) */ /* 5: DK <-- PBKDF2(P, B, 1, dkLen) */