1 files changed, 398 insertions, 0 deletions

diff --git a/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/sse/pwhash_scryptsalsa208sha256_sse.c b/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/sse/pwhash_scryptsalsa208sha256_sse.c
new file mode 100644
index 00000000..856a655e
--- /dev/null
+++ b/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/sse/pwhash_scryptsalsa208sha256_sse.c
@@ -0,0 +1,398 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#ifdef  VANILLA_NACL /* toxcore only uses this when libsodium is unavailable */
+
+/*-
+ * Copyright 2009 Colin Percival
+ * Copyright 2012,2013 Alexander Peslyak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file was originally written by Colin Percival as part of the Tarsnap
+ * online backup system.
+ */
+
+#if defined(HAVE_EMMINTRIN_H) || defined(_MSC_VER)
+#if __GNUC__
+# pragma GCC target("sse2")
+#endif
+#include <emmintrin.h>
+#if defined(__XOP__) && defined(DISABLED)
+# include <x86intrin.h>
+#endif
+
+#include <errno.h>
+#include <limits.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../pbkdf2-sha256.h"
+#include "../sysendian.h"
+#include "../crypto_scrypt.h"
+
+#if defined(__XOP__) && defined(DISABLED)
+#define ARX(out, in1, in2, s) \
+        out = _mm_xor_si128(out, _mm_roti_epi32(_mm_add_epi32(in1, in2), s));
+#else
+#define ARX(out, in1, in2, s) \
+        { \
+                __m128i T = _mm_add_epi32(in1, in2); \
+                out = _mm_xor_si128(out, _mm_slli_epi32(T, s)); \
+                out = _mm_xor_si128(out, _mm_srli_epi32(T, 32-s)); \
+        }
+#endif
+
+#define SALSA20_2ROUNDS \
+        /* Operate on "columns". */ \
+        ARX(X1, X0, X3, 7) \
+        ARX(X2, X1, X0, 9) \
+        ARX(X3, X2, X1, 13) \
+        ARX(X0, X3, X2, 18) \
+\
+        /* Rearrange data. */ \
+        X1 = _mm_shuffle_epi32(X1, 0x93); \
+        X2 = _mm_shuffle_epi32(X2, 0x4E); \
+        X3 = _mm_shuffle_epi32(X3, 0x39); \
+\
+        /* Operate on "rows". */ \
+        ARX(X3, X0, X1, 7) \
+        ARX(X2, X3, X0, 9) \
+        ARX(X1, X2, X3, 13) \
+        ARX(X0, X1, X2, 18) \
+\
+        /* Rearrange data. */ \
+        X1 = _mm_shuffle_epi32(X1, 0x39); \
+        X2 = _mm_shuffle_epi32(X2, 0x4E); \
+        X3 = _mm_shuffle_epi32(X3, 0x93);
+
+/**
+ * Apply the salsa20/8 core to the block provided in (X0 ... X3) ^ (Z0 ... Z3).
+ */
+#define SALSA20_8_XOR(in, out) \
+        { \
+                __m128i Y0 = X0 = _mm_xor_si128(X0, (in)[0]); \
+                __m128i Y1 = X1 = _mm_xor_si128(X1, (in)[1]); \
+                __m128i Y2 = X2 = _mm_xor_si128(X2, (in)[2]); \
+                __m128i Y3 = X3 = _mm_xor_si128(X3, (in)[3]); \
+                SALSA20_2ROUNDS \
+                SALSA20_2ROUNDS \
+                SALSA20_2ROUNDS \
+                SALSA20_2ROUNDS \
+                (out)[0] = X0 = _mm_add_epi32(X0, Y0); \
+                (out)[1] = X1 = _mm_add_epi32(X1, Y1); \
+                (out)[2] = X2 = _mm_add_epi32(X2, Y2); \
+                (out)[3] = X3 = _mm_add_epi32(X3, Y3); \
+        }
+
+/**
+ * blockmix_salsa8(Bin, Bout, r):
+ * Compute Bout = BlockMix_{salsa20/8, r}(Bin).  The input Bin must be 128r
+ * bytes in length; the output Bout must also be the same size.
+ */
+static inline void
+blockmix_salsa8(const __m128i * Bin, __m128i * Bout, size_t r)
+{
+        __m128i X0, X1, X2, X3;
+        size_t i;
+
+        /* 1: X <-- B_{2r - 1} */
+        X0 = Bin[8 * r - 4];
+        X1 = Bin[8 * r - 3];
+        X2 = Bin[8 * r - 2];
+        X3 = Bin[8 * r - 1];
+
+        /* 3: X <-- H(X \xor B_i) */
+        /* 4: Y_i <-- X */
+        /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */
+        SALSA20_8_XOR(Bin, Bout)
+
+        /* 2: for i = 0 to 2r - 1 do */
+        r--;
+        for (i = 0; i < r;) {
+                /* 3: X <-- H(X \xor B_i) */
+                /* 4: Y_i <-- X */
+                /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */
+                SALSA20_8_XOR(&Bin[i * 8 + 4], &Bout[(r + i) * 4 + 4])
+
+                i++;
+
+                /* 3: X <-- H(X \xor B_i) */
+                /* 4: Y_i <-- X */
+                /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */
+                SALSA20_8_XOR(&Bin[i * 8], &Bout[i * 4])
+        }
+
+        /* 3: X <-- H(X \xor B_i) */
+        /* 4: Y_i <-- X */
+        /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */
+        SALSA20_8_XOR(&Bin[i * 8 + 4], &Bout[(r + i) * 4 + 4])
+}
+
+#define XOR4(in) \
+        X0 = _mm_xor_si128(X0, (in)[0]); \
+        X1 = _mm_xor_si128(X1, (in)[1]); \
+        X2 = _mm_xor_si128(X2, (in)[2]); \
+        X3 = _mm_xor_si128(X3, (in)[3]);
+
+#define XOR4_2(in1, in2) \
+        X0 = _mm_xor_si128((in1)[0], (in2)[0]); \
+        X1 = _mm_xor_si128((in1)[1], (in2)[1]); \
+        X2 = _mm_xor_si128((in1)[2], (in2)[2]); \
+        X3 = _mm_xor_si128((in1)[3], (in2)[3]);
+
+static inline uint32_t
+blockmix_salsa8_xor(const __m128i * Bin1, const __m128i * Bin2, __m128i * Bout,
+    size_t r)
+{
+        __m128i X0, X1, X2, X3;
+        size_t i;
+
+        /* 1: X <-- B_{2r - 1} */
+        XOR4_2(&Bin1[8 * r - 4], &Bin2[8 * r - 4])
+
+        /* 3: X <-- H(X \xor B_i) */
+        /* 4: Y_i <-- X */
+        /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */
+        XOR4(Bin1)
+        SALSA20_8_XOR(Bin2, Bout)
+
+        /* 2: for i = 0 to 2r - 1 do */
+        r--;
+        for (i = 0; i < r;) {
+                /* 3: X <-- H(X \xor B_i) */
+                /* 4: Y_i <-- X */
+                /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */
+                XOR4(&Bin1[i * 8 + 4])
+                SALSA20_8_XOR(&Bin2[i * 8 + 4], &Bout[(r + i) * 4 + 4])
+
+                i++;
+
+                /* 3: X <-- H(X \xor B_i) */
+                /* 4: Y_i <-- X */
+                /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */
+                XOR4(&Bin1[i * 8])
+                SALSA20_8_XOR(&Bin2[i * 8], &Bout[i * 4])
+        }
+
+        /* 3: X <-- H(X \xor B_i) */
+        /* 4: Y_i <-- X */
+        /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */
+        XOR4(&Bin1[i * 8 + 4])
+        SALSA20_8_XOR(&Bin2[i * 8 + 4], &Bout[(r + i) * 4 + 4])
+
+        return _mm_cvtsi128_si32(X0);
+}
+
+#undef ARX
+#undef SALSA20_2ROUNDS
+#undef SALSA20_8_XOR
+#undef XOR4
+#undef XOR4_2
+
+/**
+ * integerify(B, r):
+ * Return the result of parsing B_{2r-1} as a little-endian integer.
+ */
+static inline uint32_t
+integerify(const void * B, size_t r)
+{
+        return *(const uint32_t *)((uintptr_t)(B) + (2 * r - 1) * 64);
+}
+
+/**
+ * smix(B, r, N, V, XY):
+ * Compute B = SMix_r(B, N).  The input B must be 128r bytes in length;
+ * the temporary storage V must be 128rN bytes in length; the temporary
+ * storage XY must be 256r + 64 bytes in length.  The value N must be a
+ * power of 2 greater than 1.  The arrays B, V, and XY must be aligned to a
+ * multiple of 64 bytes.
+ */
+static void
+smix(uint8_t * B, size_t r, uint32_t N, void * V, void * XY)
+{
+        size_t s = 128 * r;
+        __m128i * X = (__m128i *) V, * Y;
+        uint32_t * X32 = (uint32_t *) V;
+        uint32_t i, j;
+        size_t k;
+
+        /* 1: X <-- B */
+        /* 3: V_i <-- X */
+        for (k = 0; k < 2 * r; k++) {
+                for (i = 0; i < 16; i++) {
+                        X32[k * 16 + i] =
+                            le32dec(&B[(k * 16 + (i * 5 % 16)) * 4]);
+                }
+        }
+
+        /* 2: for i = 0 to N - 1 do */
+        for (i = 1; i < N - 1; i += 2) {
+                /* 4: X <-- H(X) */
+                /* 3: V_i <-- X */
+                Y = (__m128i *)((uintptr_t)(V) + i * s);
+                blockmix_salsa8(X, Y, r);
+
+                /* 4: X <-- H(X) */
+                /* 3: V_i <-- X */
+                X = (__m128i *)((uintptr_t)(V) + (i + 1) * s);
+                blockmix_salsa8(Y, X, r);
+        }
+
+        /* 4: X <-- H(X) */
+        /* 3: V_i <-- X */
+        Y = (__m128i *)((uintptr_t)(V) + i * s);
+        blockmix_salsa8(X, Y, r);
+
+        /* 4: X <-- H(X) */
+        /* 3: V_i <-- X */
+        X = (__m128i *) XY;
+        blockmix_salsa8(Y, X, r);
+
+        X32 = (uint32_t *) XY;
+        Y = (__m128i *)((uintptr_t)(XY) + s);
+
+        /* 7: j <-- Integerify(X) mod N */
+        j = integerify(X, r) & (N - 1);
+
+        /* 6: for i = 0 to N - 1 do */
+        for (i = 0; i < N; i += 2) {
+                __m128i * V_j = (__m128i *)((uintptr_t)(V) + j * s);
+
+                /* 8: X <-- H(X \xor V_j) */
+                /* 7: j <-- Integerify(X) mod N */
+                j = blockmix_salsa8_xor(X, V_j, Y, r) & (N - 1);
+                V_j = (__m128i *)((uintptr_t)(V) + j * s);
+
+                /* 8: X <-- H(X \xor V_j) */
+                /* 7: j <-- Integerify(X) mod N */
+                j = blockmix_salsa8_xor(Y, V_j, X, r) & (N - 1);
+        }
+
+        /* 10: B' <-- X */
+        for (k = 0; k < 2 * r; k++) {
+                for (i = 0; i < 16; i++) {
+                        le32enc(&B[(k * 16 + (i * 5 % 16)) * 4],
+                            X32[k * 16 + i]);
+                }
+        }
+}
+
+/**
+ * escrypt_kdf(local, passwd, passwdlen, salt, saltlen,
+ *     N, r, p, buf, buflen):
+ * Compute scrypt(passwd[0 .. passwdlen - 1], salt[0 .. saltlen - 1], N, r,
+ * p, buflen) and write the result into buf.  The parameters r, p, and buflen
+ * must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32.  The parameter N
+ * must be a power of 2 greater than 1.
+ *
+ * Return 0 on success; or -1 on error.
+ */
+int
+escrypt_kdf_sse(escrypt_local_t * local,
+    const uint8_t * passwd, size_t passwdlen,
+    const uint8_t * salt, size_t saltlen,
+    uint64_t N, uint32_t _r, uint32_t _p,
+    uint8_t * buf, size_t buflen)
+{
+        size_t B_size, V_size, XY_size, need;
+        uint8_t * B;
+        uint32_t * V, * XY;
+    size_t r = _r, p = _p;
+        uint32_t i;
+
+        /* Sanity-check parameters. */
+#if SIZE_MAX > UINT32_MAX
+        if (buflen > (((uint64_t)(1) << 32) - 1) * 32) {
+                errno = EFBIG;
+                return -1;
+        }
+#endif
+        if ((uint64_t)(r) * (uint64_t)(p) >= (1 << 30)) {
+                errno = EFBIG;
+                return -1;
+        }
+        if (N > UINT32_MAX) {
+                errno = EFBIG;
+                return -1;
+        }
+        if (((N & (N - 1)) != 0) || (N < 2)) {
+                errno = EINVAL;
+                return -1;
+        }
+        if (r == 0 || p == 0) {
+                errno = EINVAL;
+                return -1;
+        }
+        if ((r > SIZE_MAX / 128 / p) ||
+#if SIZE_MAX / 256 <= UINT32_MAX
+            (r > SIZE_MAX / 256) ||
+#endif
+            (N > SIZE_MAX / 128 / r)) {
+                errno = ENOMEM;
+                return -1;
+        }
+
+        /* Allocate memory. */
+        B_size = (size_t)128 * r * p;
+        V_size = (size_t)128 * r * N;
+        need = B_size + V_size;
+        if (need < V_size) {
+                errno = ENOMEM;
+                return -1;
+        }
+        XY_size = (size_t)256 * r + 64;
+        need += XY_size;
+        if (need < XY_size) {
+                errno = ENOMEM;
+                return -1;
+        }
+        if (local->size < need) {
+                if (free_region(local))
+                        return -1;
+                if (!alloc_region(local, need))
+                        return -1;
+        }
+        B = (uint8_t *)local->aligned;
+        V = (uint32_t *)((uint8_t *)B + B_size);
+        XY = (uint32_t *)((uint8_t *)V + V_size);
+
+        /* 1: (B_0 ... B_{p-1}) <-- PBKDF2(P, S, 1, p * MFLen) */
+        PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, 1, B, B_size);
+
+        /* 2: for i = 0 to p - 1 do */
+        for (i = 0; i < p; i++) {
+                /* 3: B_i <-- MF(B_i, N) */
+                smix(&B[(size_t)128 * i * r], r, N, V, XY);
+        }
+
+        /* 5: DK <-- PBKDF2(P, B, 1, dkLen) */
+        PBKDF2_SHA256(passwd, passwdlen, B, B_size, 1, buf, buflen);
+
+        /* Success! */
+        return 0;
+}
+#endif
+
+#endif