Merge branch 'master' into Sync-weave

1 files changed, 248 insertions, 0 deletions

diff --git a/other-licenses/7zstub/src/C/Sha256.c b/other-licenses/7zstub/src/C/Sha256.c
new file mode 100644
index 000000000..90994e5ab
--- /dev/null
+++ b/other-licenses/7zstub/src/C/Sha256.c
@@ -0,0 +1,248 @@
+/* Crypto/Sha256.c -- SHA-256 Hash

+2017-04-03 : Igor Pavlov : Public domain

+This code is based on public domain code from Wei Dai's Crypto++ library. */

+

+#include "Precomp.h"

+

+#include <string.h>

+

+#include "CpuArch.h"

+#include "RotateDefs.h"

+#include "Sha256.h"

+

+/* define it for speed optimization */

+#ifndef _SFX

+#define _SHA256_UNROLL

+#define _SHA256_UNROLL2

+#endif

+

+/* #define _SHA256_UNROLL2 */

+

+void Sha256_Init(CSha256 *p)

+{

+  p->state[0] = 0x6a09e667;

+  p->state[1] = 0xbb67ae85;

+  p->state[2] = 0x3c6ef372;

+  p->state[3] = 0xa54ff53a;

+  p->state[4] = 0x510e527f;

+  p->state[5] = 0x9b05688c;

+  p->state[6] = 0x1f83d9ab;

+  p->state[7] = 0x5be0cd19;

+  p->count = 0;

+}

+

+#define S0(x) (rotrFixed(x, 2) ^ rotrFixed(x,13) ^ rotrFixed(x, 22))

+#define S1(x) (rotrFixed(x, 6) ^ rotrFixed(x,11) ^ rotrFixed(x, 25))

+#define s0(x) (rotrFixed(x, 7) ^ rotrFixed(x,18) ^ (x >> 3))

+#define s1(x) (rotrFixed(x,17) ^ rotrFixed(x,19) ^ (x >> 10))

+

+#define blk0(i) (W[i])

+#define blk2(i) (W[i] += s1(W[((i)-2)&15]) + W[((i)-7)&15] + s0(W[((i)-15)&15]))

+

+#define Ch(x,y,z) (z^(x&(y^z)))

+#define Maj(x,y,z) ((x&y)|(z&(x|y)))

+

+#ifdef _SHA256_UNROLL2

+

+#define R(a,b,c,d,e,f,g,h, i) \

+    h += S1(e) + Ch(e,f,g) + K[(i)+(size_t)(j)] + (j ? blk2(i) : blk0(i)); \

+    d += h; \

+    h += S0(a) + Maj(a, b, c)

+

+#define RX_8(i) \

+  R(a,b,c,d,e,f,g,h, i); \

+  R(h,a,b,c,d,e,f,g, i+1); \

+  R(g,h,a,b,c,d,e,f, i+2); \

+  R(f,g,h,a,b,c,d,e, i+3); \

+  R(e,f,g,h,a,b,c,d, i+4); \

+  R(d,e,f,g,h,a,b,c, i+5); \

+  R(c,d,e,f,g,h,a,b, i+6); \

+  R(b,c,d,e,f,g,h,a, i+7)

+

+#define RX_16  RX_8(0); RX_8(8);

+

+#else

+

+#define a(i) T[(0-(i))&7]

+#define b(i) T[(1-(i))&7]

+#define c(i) T[(2-(i))&7]

+#define d(i) T[(3-(i))&7]

+#define e(i) T[(4-(i))&7]

+#define f(i) T[(5-(i))&7]

+#define g(i) T[(6-(i))&7]

+#define h(i) T[(7-(i))&7]

+

+#define R(i) \

+    h(i) += S1(e(i)) + Ch(e(i),f(i),g(i)) + K[(i)+(size_t)(j)] + (j ? blk2(i) : blk0(i)); \

+    d(i) += h(i); \

+    h(i) += S0(a(i)) + Maj(a(i), b(i), c(i)) \

+

+#ifdef _SHA256_UNROLL

+

+#define RX_8(i)  R(i+0); R(i+1); R(i+2); R(i+3); R(i+4); R(i+5); R(i+6); R(i+7);

+#define RX_16  RX_8(0); RX_8(8);

+

+#else

+

+#define RX_16  unsigned i; for (i = 0; i < 16; i++) { R(i); }

+

+#endif

+

+#endif

+

+static const UInt32 K[64] = {

+  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,

+  0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,

+  0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,

+  0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,

+  0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,

+  0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,

+  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,

+  0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,

+  0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,

+  0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,

+  0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,

+  0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,

+  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,

+  0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,

+  0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,

+  0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2

+};

+

+static void Sha256_WriteByteBlock(CSha256 *p)

+{

+  UInt32 W[16];

+  unsigned j;

+  UInt32 *state;

+

+  #ifdef _SHA256_UNROLL2

+  UInt32 a,b,c,d,e,f,g,h;

+  #else

+  UInt32 T[8];

+  #endif

+

+  for (j = 0; j < 16; j += 4)

+  {

+    const Byte *ccc = p->buffer + j * 4;

+    W[j    ] = GetBe32(ccc);

+    W[j + 1] = GetBe32(ccc + 4);

+    W[j + 2] = GetBe32(ccc + 8);

+    W[j + 3] = GetBe32(ccc + 12);

+  }

+

+  state = p->state;

+

+  #ifdef _SHA256_UNROLL2

+  a = state[0];

+  b = state[1];

+  c = state[2];

+  d = state[3];

+  e = state[4];

+  f = state[5];

+  g = state[6];

+  h = state[7];

+  #else

+  for (j = 0; j < 8; j++)

+    T[j] = state[j];

+  #endif

+

+  for (j = 0; j < 64; j += 16)

+  {

+    RX_16

+  }

+

+  #ifdef _SHA256_UNROLL2

+  state[0] += a;

+  state[1] += b;

+  state[2] += c;

+  state[3] += d;

+  state[4] += e;

+  state[5] += f;

+  state[6] += g;

+  state[7] += h;

+  #else

+  for (j = 0; j < 8; j++)

+    state[j] += T[j];

+  #endif

+  

+  /* Wipe variables */

+  /* memset(W, 0, sizeof(W)); */

+  /* memset(T, 0, sizeof(T)); */

+}

+

+#undef S0

+#undef S1

+#undef s0

+#undef s1

+

+void Sha256_Update(CSha256 *p, const Byte *data, size_t size)

+{

+  if (size == 0)

+    return;

+

+  {

+    unsigned pos = (unsigned)p->count & 0x3F;

+    unsigned num;

+    

+    p->count += size;

+    

+    num = 64 - pos;

+    if (num > size)

+    {

+      memcpy(p->buffer + pos, data, size);

+      return;

+    }

+    

+    size -= num;

+    memcpy(p->buffer + pos, data, num);

+    data += num;

+  }

+

+  for (;;)

+  {

+    Sha256_WriteByteBlock(p);

+    if (size < 64)

+      break;

+    size -= 64;

+    memcpy(p->buffer, data, 64);

+    data += 64;

+  }

+

+  if (size != 0)

+    memcpy(p->buffer, data, size);

+}

+

+void Sha256_Final(CSha256 *p, Byte *digest)

+{

+  unsigned pos = (unsigned)p->count & 0x3F;

+  unsigned i;

+  

+  p->buffer[pos++] = 0x80;

+  

+  while (pos != (64 - 8))

+  {

+    pos &= 0x3F;

+    if (pos == 0)

+      Sha256_WriteByteBlock(p);

+    p->buffer[pos++] = 0;

+  }

+

+  {

+    UInt64 numBits = (p->count << 3);

+    SetBe32(p->buffer + 64 - 8, (UInt32)(numBits >> 32));

+    SetBe32(p->buffer + 64 - 4, (UInt32)(numBits));

+  }

+  

+  Sha256_WriteByteBlock(p);

+

+  for (i = 0; i < 8; i += 2)

+  {

+    UInt32 v0 = p->state[i];

+    UInt32 v1 = p->state[i + 1];

+    SetBe32(digest    , v0);

+    SetBe32(digest + 4, v1);

+    digest += 8;

+  }

+  

+  Sha256_Init(p);

+}