1 files changed, 300 insertions, 0 deletions

diff --git a/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/hash_sha256.c b/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/hash_sha256.c
new file mode 100644
index 00000000..2fddc126
--- /dev/null
+++ b/toxencryptsave/crypto_pwhash_scryptsalsa208sha256/hash_sha256.c
@@ -0,0 +1,300 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#ifdef  VANILLA_NACL /* toxcore only uses this when libsodium is unavailable */
+
+/*-
+ * Copyright 2005,2007,2009 Colin Percival
+ * 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.
+ *
+ */
+
+//#include "api.h"
+#include "crypto_hash_sha256.h"
+#include "utils.h"
+
+#include <sys/types.h>
+
+#include <limits.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* Avoid namespace collisions with BSD <sys/endian.h>. */
+#define be32dec _sha256_be32dec
+#define be32enc _sha256_be32enc
+
+static inline uint32_t
+be32dec(const void *pp)
+{
+    const uint8_t *p = (uint8_t const *)pp;
+
+    return ((uint32_t)(p[3]) + ((uint32_t)(p[2]) << 8) +
+            ((uint32_t)(p[1]) << 16) + ((uint32_t)(p[0]) << 24));
+}
+
+static inline void
+be32enc(void *pp, uint32_t x)
+{
+    uint8_t * p = (uint8_t *)pp;
+
+    p[3] = x & 0xff;
+    p[2] = (x >> 8) & 0xff;
+    p[1] = (x >> 16) & 0xff;
+    p[0] = (x >> 24) & 0xff;
+}
+
+static void
+be32enc_vect(unsigned char *dst, const uint32_t *src, size_t len)
+{
+    size_t i;
+
+    for (i = 0; i < len / 4; i++) {
+        be32enc(dst + i * 4, src[i]);
+    }
+}
+
+static void
+be32dec_vect(uint32_t *dst, const unsigned char *src, size_t len)
+{
+    size_t i;
+
+    for (i = 0; i < len / 4; i++) {
+        dst[i] = be32dec(src + i * 4);
+    }
+}
+
+#define Ch(x, y, z)     ((x & (y ^ z)) ^ z)
+#define Maj(x, y, z)    ((x & (y | z)) | (y & z))
+#define SHR(x, n)       (x >> n)
+#define ROTR(x, n)      ((x >> n) | (x << (32 - n)))
+#define S0(x)           (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22))
+#define S1(x)           (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25))
+#define s0(x)           (ROTR(x, 7) ^ ROTR(x, 18) ^ SHR(x, 3))
+#define s1(x)           (ROTR(x, 17) ^ ROTR(x, 19) ^ SHR(x, 10))
+
+#define RND(a, b, c, d, e, f, g, h, k)              \
+    t0 = h + S1(e) + Ch(e, f, g) + k;               \
+    t1 = S0(a) + Maj(a, b, c);                      \
+    d += t0;                                        \
+    h  = t0 + t1;
+
+#define RNDr(S, W, i, k)                    \
+    RND(S[(64 - i) % 8], S[(65 - i) % 8],   \
+        S[(66 - i) % 8], S[(67 - i) % 8],   \
+        S[(68 - i) % 8], S[(69 - i) % 8],   \
+        S[(70 - i) % 8], S[(71 - i) % 8],   \
+        W[i] + k)
+
+static void
+SHA256_Transform(uint32_t *state, const unsigned char block[64])
+{
+    uint32_t W[64];
+    uint32_t S[8];
+    uint32_t t0, t1;
+    int i;
+
+    be32dec_vect(W, block, 64);
+    for (i = 16; i < 64; i++) {
+        W[i] = s1(W[i - 2]) + W[i - 7] + s0(W[i - 15]) + W[i - 16];
+    }
+
+    memcpy(S, state, 32);
+
+    RNDr(S, W, 0, 0x428a2f98);
+    RNDr(S, W, 1, 0x71374491);
+    RNDr(S, W, 2, 0xb5c0fbcf);
+    RNDr(S, W, 3, 0xe9b5dba5);
+    RNDr(S, W, 4, 0x3956c25b);
+    RNDr(S, W, 5, 0x59f111f1);
+    RNDr(S, W, 6, 0x923f82a4);
+    RNDr(S, W, 7, 0xab1c5ed5);
+    RNDr(S, W, 8, 0xd807aa98);
+    RNDr(S, W, 9, 0x12835b01);
+    RNDr(S, W, 10, 0x243185be);
+    RNDr(S, W, 11, 0x550c7dc3);
+    RNDr(S, W, 12, 0x72be5d74);
+    RNDr(S, W, 13, 0x80deb1fe);
+    RNDr(S, W, 14, 0x9bdc06a7);
+    RNDr(S, W, 15, 0xc19bf174);
+    RNDr(S, W, 16, 0xe49b69c1);
+    RNDr(S, W, 17, 0xefbe4786);
+    RNDr(S, W, 18, 0x0fc19dc6);
+    RNDr(S, W, 19, 0x240ca1cc);
+    RNDr(S, W, 20, 0x2de92c6f);
+    RNDr(S, W, 21, 0x4a7484aa);
+    RNDr(S, W, 22, 0x5cb0a9dc);
+    RNDr(S, W, 23, 0x76f988da);
+    RNDr(S, W, 24, 0x983e5152);
+    RNDr(S, W, 25, 0xa831c66d);
+    RNDr(S, W, 26, 0xb00327c8);
+    RNDr(S, W, 27, 0xbf597fc7);
+    RNDr(S, W, 28, 0xc6e00bf3);
+    RNDr(S, W, 29, 0xd5a79147);
+    RNDr(S, W, 30, 0x06ca6351);
+    RNDr(S, W, 31, 0x14292967);
+    RNDr(S, W, 32, 0x27b70a85);
+    RNDr(S, W, 33, 0x2e1b2138);
+    RNDr(S, W, 34, 0x4d2c6dfc);
+    RNDr(S, W, 35, 0x53380d13);
+    RNDr(S, W, 36, 0x650a7354);
+    RNDr(S, W, 37, 0x766a0abb);
+    RNDr(S, W, 38, 0x81c2c92e);
+    RNDr(S, W, 39, 0x92722c85);
+    RNDr(S, W, 40, 0xa2bfe8a1);
+    RNDr(S, W, 41, 0xa81a664b);
+    RNDr(S, W, 42, 0xc24b8b70);
+    RNDr(S, W, 43, 0xc76c51a3);
+    RNDr(S, W, 44, 0xd192e819);
+    RNDr(S, W, 45, 0xd6990624);
+    RNDr(S, W, 46, 0xf40e3585);
+    RNDr(S, W, 47, 0x106aa070);
+    RNDr(S, W, 48, 0x19a4c116);
+    RNDr(S, W, 49, 0x1e376c08);
+    RNDr(S, W, 50, 0x2748774c);
+    RNDr(S, W, 51, 0x34b0bcb5);
+    RNDr(S, W, 52, 0x391c0cb3);
+    RNDr(S, W, 53, 0x4ed8aa4a);
+    RNDr(S, W, 54, 0x5b9cca4f);
+    RNDr(S, W, 55, 0x682e6ff3);
+    RNDr(S, W, 56, 0x748f82ee);
+    RNDr(S, W, 57, 0x78a5636f);
+    RNDr(S, W, 58, 0x84c87814);
+    RNDr(S, W, 59, 0x8cc70208);
+    RNDr(S, W, 60, 0x90befffa);
+    RNDr(S, W, 61, 0xa4506ceb);
+    RNDr(S, W, 62, 0xbef9a3f7);
+    RNDr(S, W, 63, 0xc67178f2);
+
+    for (i = 0; i < 8; i++) {
+        state[i] += S[i];
+    }
+
+    sodium_memzero((void *) W, sizeof W);
+    sodium_memzero((void *) S, sizeof S);
+    sodium_memzero((void *) &t0, sizeof t0);
+    sodium_memzero((void *) &t1, sizeof t1);
+}
+
+static unsigned char PAD[64] = {
+    0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+static void
+SHA256_Pad(crypto_hash_sha256_state *state)
+{
+    unsigned char len[8];
+    uint32_t r, plen;
+
+    be32enc_vect(len, state->count, 8);
+
+    r = (state->count[1] >> 3) & 0x3f;
+    plen = (r < 56) ? (56 - r) : (120 - r);
+    crypto_hash_sha256_update(state, PAD, (unsigned long long) plen);
+
+    crypto_hash_sha256_update(state, len, 8);
+}
+
+int
+crypto_hash_sha256_init(crypto_hash_sha256_state *state)
+{
+    state->count[0] = state->count[1] = 0;
+
+    state->state[0] = 0x6A09E667;
+    state->state[1] = 0xBB67AE85;
+    state->state[2] = 0x3C6EF372;
+    state->state[3] = 0xA54FF53A;
+    state->state[4] = 0x510E527F;
+    state->state[5] = 0x9B05688C;
+    state->state[6] = 0x1F83D9AB;
+    state->state[7] = 0x5BE0CD19;
+
+    return 0;
+}
+
+int
+crypto_hash_sha256_update(crypto_hash_sha256_state *state,
+                          const unsigned char *in,
+                          unsigned long long inlen)
+{
+    uint32_t bitlen[2];
+    uint32_t r;
+
+    r = (state->count[1] >> 3) & 0x3f;
+
+    bitlen[1] = ((uint32_t)inlen) << 3;
+    bitlen[0] = (uint32_t)(inlen >> 29);
+
+    if ((state->count[1] += bitlen[1]) < bitlen[1]) {
+        state->count[0]++;
+    }
+    state->count[0] += bitlen[0];
+
+    if (inlen < 64 - r) {
+        memcpy(&state->buf[r], in, inlen);
+        return 0;
+    }
+    memcpy(&state->buf[r], in, 64 - r);
+    SHA256_Transform(state->state, state->buf);
+    in += 64 - r;
+    inlen -= 64 - r;
+
+    while (inlen >= 64) {
+        SHA256_Transform(state->state, in);
+        in += 64;
+        inlen -= 64;
+    }
+    memcpy(state->buf, in, inlen);
+
+    return 0;
+}
+
+int
+crypto_hash_sha256_final(crypto_hash_sha256_state *state,
+                         unsigned char *out)
+{
+    SHA256_Pad(state);
+    be32enc_vect(out, state->state, 32);
+    sodium_memzero((void *) state, sizeof *state);
+
+    return 0;
+}
+
+int
+crypto_hash(unsigned char *out, const unsigned char *in,
+            unsigned long long inlen)
+{
+    crypto_hash_sha256_state state;
+
+    crypto_hash_sha256_init(&state);
+    crypto_hash_sha256_update(&state, in, inlen);
+    crypto_hash_sha256_final(&state, out);
+
+    return 0;
+}
+
+#endif