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Overview
Comment:Replace memcpy with memmove, non-ambiguous copy
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: a90f1eb37d2b65a8cd4b201e93b8c0d7f52d1bb8
User & Date: bernd 2019-03-09 13:56:49
Context
2019-03-09
14:41
Replace memcpy with memmove, non-ambiguous copy, bump related versions check-in: 770a5861c6 user: bernd tags: trunk
13:56
Replace memcpy with memmove, non-ambiguous copy check-in: a90f1eb37d user: bernd tags: trunk
12:11
Markdown edits check-in: 385b2a8aa4 user: bernd tags: trunk
Changes
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Changes to keccak/KeccakF-1600-neon.c. 

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void KeccakInitialize()
{
}

void KeccakExtract(keccak_state state, UINT64 *data, int byteCount)
{
  memcpy(data, state, byteCount);
}

void KeccakAbsorb(keccak_state state, UINT64 *data, int byteCount)
{
  int i;
  keccak_state datai;
  memcpy(datai, data, byteCount);
  for(i=0; i<byteCount-7; i+=8) {
    state[i>>3] ^= datai[i>>3];
  }
  if(byteCount & 7) {
    UINT64 m = 0xffffffffffffffffull >> ((8-byteCount) & 7)*8;
    state[i>>3] ^= datai[i>>3] & m;
  }
}

void KeccakEncrypt(keccak_state state, UINT64 *data, int byteCount)
{
  int i;
  keccak_state datai;
  memcpy(datai, data, byteCount);
  for(i=0; i<byteCount-7; i+=8) {
    datai[i>>3] = state[i>>3] ^= datai[i>>3];
  }
  if(byteCount & 7) {
    UINT64 m = 0xffffffffffffffffull >> ((8-byteCount) & 7)*8;
    state[i>>3] ^= datai[i>>3] & m;
    datai[i>>3] = state[i>>3];
  }
  memcpy(data, datai, byteCount);
}

void KeccakDecrypt(keccak_state state, UINT64 *data, int byteCount)
{
  int i;
  UINT64 tmp;
  keccak_state datai;
  memcpy(datai, data, byteCount);
  for(i=0; i<byteCount-7; i+=8) {
    tmp = datai[i>>3] ^ state[i>>3];
    state[i>>3] = datai[i>>3];
    datai[i>>3] = tmp;
  }
  if(byteCount & 7) {
    UINT64 m = 0xffffffffffffffffull >> ((8-byteCount) & 7)*8;
    tmp = datai[i>>3] ^ state[i>>3];
    state[i>>3] = (datai[i>>3] & m) | (state[i>>3] & ~m);
    datai[i>>3] = tmp;
  }
  memcpy(data, datai, byteCount);
}








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void KeccakInitialize()
{
}

void KeccakExtract(keccak_state state, UINT64 *data, int byteCount)
{
  memmove(data, state, byteCount);
}

void KeccakAbsorb(keccak_state state, UINT64 *data, int byteCount)
{
  int i;
  keccak_state datai;
  memmove(datai, data, byteCount);
  for(i=0; i<byteCount-7; i+=8) {
    state[i>>3] ^= datai[i>>3];
  }
  if(byteCount & 7) {
    UINT64 m = 0xffffffffffffffffull >> ((8-byteCount) & 7)*8;
    state[i>>3] ^= datai[i>>3] & m;
  }
}

void KeccakEncrypt(keccak_state state, UINT64 *data, int byteCount)
{
  int i;
  keccak_state datai;
  memmove(datai, data, byteCount);
  for(i=0; i<byteCount-7; i+=8) {
    datai[i>>3] = state[i>>3] ^= datai[i>>3];
  }
  if(byteCount & 7) {
    UINT64 m = 0xffffffffffffffffull >> ((8-byteCount) & 7)*8;
    state[i>>3] ^= datai[i>>3] & m;
    datai[i>>3] = state[i>>3];
  }
  memmove(data, datai, byteCount);
}

void KeccakDecrypt(keccak_state state, UINT64 *data, int byteCount)
{
  int i;
  UINT64 tmp;
  keccak_state datai;
  memmove(datai, data, byteCount);
  for(i=0; i<byteCount-7; i+=8) {
    tmp = datai[i>>3] ^ state[i>>3];
    state[i>>3] = datai[i>>3];
    datai[i>>3] = tmp;
  }
  if(byteCount & 7) {
    UINT64 m = 0xffffffffffffffffull >> ((8-byteCount) & 7)*8;
    tmp = datai[i>>3] ^ state[i>>3];
    state[i>>3] = (datai[i>>3] & m) | (state[i>>3] & ~m);
    datai[i>>3] = tmp;
  }
  memmove(data, datai, byteCount);
}

Changes to keccak/KeccakF-1600-opt32.c. 

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void xorLanesIntoState(int byteCount, UINT32* state, UINT8* input)
 {
  int i;
  UINT64 tmp=0;
  for(i=0; i<(byteCount-7); i+=8)
    xor8bytesIntoInterleavedWords(state+(i>>2), state+(i>>2)+1, input+i);
  if(byteCount & 7) {
    memcpy(&tmp, input+i, byteCount & 7);
    xor8bytesIntoInterleavedWords(state+(i>>2), state+(i>>2)+1, (UINT8*)&tmp);
  }
}

void setInterleavedWordsInto8bytes(UINT8* dest, UINT32 even, UINT32 odd)
{
    UINT16 d0, d1, d2, d3;
................................................................................
{
  int i;
  UINT64 tmp=0;
  for(i=0; i<(byteCount-7); i+=8) {
      setInterleavedWordsInto8bytes(data+i, state[i>>2], state[(i>>2)+1]);
  }
  setInterleavedWordsInto8bytes(&tmp, state[i>>2], state[(i>>2)+1]);
  memcpy(data+i, &tmp, byteCount & 7);
}

#else // No interleaving tables

#if (PLATFORM_BYTE_ORDER == IS_LITTLE_ENDIAN)

// Credit: Henry S. Warren, Hacker's Delight, Addison-Wesley, 2002
................................................................................

void xorLanesIntoState(int byteCount, UINT8* state, UINT8 *input)
{
  int i; UINT64 tmp=0;
  for(i=0; i<(byteCount-7); i+=8)
    xor8bytesIntoInterleavedWords((UINT32*)(state+i), (UINT32*)(input+i));
  if(byteCount & 7) {
    memcpy(&tmp, input+i, byteCount & 7);
    xor8bytesIntoInterleavedWords((UINT32*)(state+i), (UINT32*)&tmp);
  }
}

#endif // Endianness

// Credit: Henry S. Warren, Hacker's Delight, Addison-Wesley, 2002
................................................................................
void extractLanes(int byteCount, UINT32* state, UINT8 *data)
{
  int i; UINT64 tmp=0;
  for(i=0; i<(byteCount-7); i+=8) {
    setInterleavedWordsInto8bytes(data+i, state+(i>>2));
  }
  setInterleavedWordsInto8bytes((UINT8*)&tmp, state+(i>>2));
  memcpy(data+i, (UINT8*)&tmp, byteCount & 7);
}

#endif // With or without interleaving tables

#if defined(_MSC_VER)
#define ROL32(a, offset) _rotl(a, offset)
#elif (defined (__arm__) && defined(__ARMCC_VERSION))








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void xorLanesIntoState(int byteCount, UINT32* state, UINT8* input)
 {
  int i;
  UINT64 tmp=0;
  for(i=0; i<(byteCount-7); i+=8)
    xor8bytesIntoInterleavedWords(state+(i>>2), state+(i>>2)+1, input+i);
  if(byteCount & 7) {
    memmove(&tmp, input+i, byteCount & 7);
    xor8bytesIntoInterleavedWords(state+(i>>2), state+(i>>2)+1, (UINT8*)&tmp);
  }
}

void setInterleavedWordsInto8bytes(UINT8* dest, UINT32 even, UINT32 odd)
{
    UINT16 d0, d1, d2, d3;
................................................................................
{
  int i;
  UINT64 tmp=0;
  for(i=0; i<(byteCount-7); i+=8) {
      setInterleavedWordsInto8bytes(data+i, state[i>>2], state[(i>>2)+1]);
  }
  setInterleavedWordsInto8bytes(&tmp, state[i>>2], state[(i>>2)+1]);
  memmove(data+i, &tmp, byteCount & 7);
}

#else // No interleaving tables

#if (PLATFORM_BYTE_ORDER == IS_LITTLE_ENDIAN)

// Credit: Henry S. Warren, Hacker's Delight, Addison-Wesley, 2002
................................................................................

void xorLanesIntoState(int byteCount, UINT8* state, UINT8 *input)
{
  int i; UINT64 tmp=0;
  for(i=0; i<(byteCount-7); i+=8)
    xor8bytesIntoInterleavedWords((UINT32*)(state+i), (UINT32*)(input+i));
  if(byteCount & 7) {
    memmove(&tmp, input+i, byteCount & 7);
    xor8bytesIntoInterleavedWords((UINT32*)(state+i), (UINT32*)&tmp);
  }
}

#endif // Endianness

// Credit: Henry S. Warren, Hacker's Delight, Addison-Wesley, 2002
................................................................................
void extractLanes(int byteCount, UINT32* state, UINT8 *data)
{
  int i; UINT64 tmp=0;
  for(i=0; i<(byteCount-7); i+=8) {
    setInterleavedWordsInto8bytes(data+i, state+(i>>2));
  }
  setInterleavedWordsInto8bytes((UINT8*)&tmp, state+(i>>2));
  memmove(data+i, (UINT8*)&tmp, byteCount & 7);
}

#endif // With or without interleaving tables

#if defined(_MSC_VER)
#define ROL32(a, offset) _rotl(a, offset)
#elif (defined (__arm__) && defined(__ARMCC_VERSION))

Changes to keccak/KeccakF-1600-opt64.c. 

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{
}

void KeccakExtract(keccak_state state, UINT64 *data, int byteCount)
{
  UINT64 m = ~(UINT64)0;
#if (PLATFORM_BYTE_ORDER == IS_LITTLE_ENDIAN)
  memcpy(data, state, byteCount);
#else
  int i;
  
  for(i=0; i<byteCount-7; i+=8)
    fromWordToBytes(data+(i>>3), ((const UINT64*)state)[i>>3]);
#endif
#ifdef UseBebigokimisa








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{
}

void KeccakExtract(keccak_state state, UINT64 *data, int byteCount)
{
  UINT64 m = ~(UINT64)0;
#if (PLATFORM_BYTE_ORDER == IS_LITTLE_ENDIAN)
  memmove(data, state, byteCount);
#else
  int i;
  
  for(i=0; i<byteCount-7; i+=8)
    fromWordToBytes(data+(i>>3), ((const UINT64*)state)[i>>3]);
#endif
#ifdef UseBebigokimisa

Changes to threefish/threefish.c. 

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  switch(flags & 3) {
  case 2: // Bernd mode, fall through to ECB mode
    for (i=0; i<4; i++) {
      ctx->key[i] ^= X[i] ^ p[i];
    }
  case 0: // ECB mode
    memcpy(out, X, 32);
    break;
  case 1: // SKEIN mode
    for (i=0; i<4; i++) {
      out[i] = X[i] ^ p[i];
    } break;
  default: break;
  }
................................................................................
  
  switch(flags & 3) {
  case 2: // Bernd mode, fall through to ECB mode
    for (i=0; i<8; i++) {
      ctx->key[i] ^= X[i] ^ p[i];
    }
  case 0: // ECB mode
    memcpy(out, X, 64);
    break;
  case 1: // SKEIN mode
    for (i=0; i<8; i++) {
      out[i] = X[i] ^ p[i];
    } break;
  default: break;
  }
................................................................................
  if(flags & 8) {
    tf_prep_256(ctx);
  }
  if(flags & 4) {
    tf_tweak_256(ctx);
  }
  
  memcpy(X, c, 32);
  
  /* The rounds: */
  ROUNDD_256(18); ROUNDD_256(17); ROUNDD_256(16); ROUNDD_256(15); ROUNDD_256(14); ROUNDD_256(13);
  ROUNDD_256(12); ROUNDD_256(11); ROUNDD_256(10); ROUNDD_256(9); ROUNDD_256(8); ROUNDD_256(7);
  ROUNDD_256(6); ROUNDD_256(5); ROUNDD_256(4); ROUNDD_256(3); ROUNDD_256(2); ROUNDD_256(1);
  
  for (i=0; i<4; i++) {
................................................................................
  
  switch(flags & 3) {
  case 2: // Bernd mode, fall through to ECB mode
    for (i=0; i<4; i++) {
      ctx->key[i] ^= X[i] ^ c[i];
    }
  case 0: // ECB mode
    memcpy(out, X, 32);
    break;
  default: break;
  }
}

#define PERMUTD_512(i)					\
  m = tf_perm_512[2*i];					\
................................................................................
  if(flags & 8) {
    tf_prep_512(ctx);
  }
  if(flags & 4) {
    tf_tweak_512(ctx);
  }
  
  memcpy(X, c, 64);
  
  /* The rounds: */
  ROUNDD_512(18); ROUNDD_512(17); ROUNDD_512(16); ROUNDD_512(15); ROUNDD_512(14); ROUNDD_512(13);
  ROUNDD_512(12); ROUNDD_512(11); ROUNDD_512(10); ROUNDD_512(9); ROUNDD_512(8); ROUNDD_512(7);
  ROUNDD_512(6); ROUNDD_512(5); ROUNDD_512(4); ROUNDD_512(3); ROUNDD_512(2); ROUNDD_512(1);
  
  for (i=0; i<8; i++) {
................................................................................
  
  switch(flags & 3) {
  case 2: // Bernd mode, fall through to ECB mode
    for (i=0; i<8; i++) {
      ctx->key[i] ^= X[i] ^ c[i];
    }
  case 0: // ECB mode
    memcpy(out, X, 64);
    break;
  default: break;
  }
}








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  switch(flags & 3) {
  case 2: // Bernd mode, fall through to ECB mode
    for (i=0; i<4; i++) {
      ctx->key[i] ^= X[i] ^ p[i];
    }
  case 0: // ECB mode
    memmove(out, X, 32);
    break;
  case 1: // SKEIN mode
    for (i=0; i<4; i++) {
      out[i] = X[i] ^ p[i];
    } break;
  default: break;
  }
................................................................................
  
  switch(flags & 3) {
  case 2: // Bernd mode, fall through to ECB mode
    for (i=0; i<8; i++) {
      ctx->key[i] ^= X[i] ^ p[i];
    }
  case 0: // ECB mode
    memmove(out, X, 64);
    break;
  case 1: // SKEIN mode
    for (i=0; i<8; i++) {
      out[i] = X[i] ^ p[i];
    } break;
  default: break;
  }
................................................................................
  if(flags & 8) {
    tf_prep_256(ctx);
  }
  if(flags & 4) {
    tf_tweak_256(ctx);
  }
  
  memmove(X, c, 32);
  
  /* The rounds: */
  ROUNDD_256(18); ROUNDD_256(17); ROUNDD_256(16); ROUNDD_256(15); ROUNDD_256(14); ROUNDD_256(13);
  ROUNDD_256(12); ROUNDD_256(11); ROUNDD_256(10); ROUNDD_256(9); ROUNDD_256(8); ROUNDD_256(7);
  ROUNDD_256(6); ROUNDD_256(5); ROUNDD_256(4); ROUNDD_256(3); ROUNDD_256(2); ROUNDD_256(1);
  
  for (i=0; i<4; i++) {
................................................................................
  
  switch(flags & 3) {
  case 2: // Bernd mode, fall through to ECB mode
    for (i=0; i<4; i++) {
      ctx->key[i] ^= X[i] ^ c[i];
    }
  case 0: // ECB mode
    memmove(out, X, 32);
    break;
  default: break;
  }
}

#define PERMUTD_512(i)					\
  m = tf_perm_512[2*i];					\
................................................................................
  if(flags & 8) {
    tf_prep_512(ctx);
  }
  if(flags & 4) {
    tf_tweak_512(ctx);
  }
  
  memmove(X, c, 64);
  
  /* The rounds: */
  ROUNDD_512(18); ROUNDD_512(17); ROUNDD_512(16); ROUNDD_512(15); ROUNDD_512(14); ROUNDD_512(13);
  ROUNDD_512(12); ROUNDD_512(11); ROUNDD_512(10); ROUNDD_512(9); ROUNDD_512(8); ROUNDD_512(7);
  ROUNDD_512(6); ROUNDD_512(5); ROUNDD_512(4); ROUNDD_512(3); ROUNDD_512(2); ROUNDD_512(1);
  
  for (i=0; i<8; i++) {
................................................................................
  
  switch(flags & 3) {
  case 2: // Bernd mode, fall through to ECB mode
    for (i=0; i<8; i++) {
      ctx->key[i] ^= X[i] ^ c[i];
    }
  case 0: // ECB mode
    memmove(out, X, 64);
    break;
  default: break;
  }
}

Fossil 2.10 [a56cb60278] 2019-10-07 17:20:47