Some code cleanup and make sure any type punning is guarded with ZT_NO_TYPE_PUNNING.
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4 changed files with 76 additions and 63 deletions
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@ -69,46 +69,42 @@ namespace ZeroTier {
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void Salsa20::init(const void *key,const void *iv)
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{
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#ifdef ZT_SALSA20_SSE
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const uint32_t *k = (const uint32_t *)key;
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const uint32_t *const k = (const uint32_t *)key;
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_state.i[0] = 0x61707865;
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_state.i[3] = 0x6b206574;
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_state.i[13] = k[0];
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_state.i[10] = k[1];
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_state.i[7] = k[2];
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_state.i[4] = k[3];
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k += 4;
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_state.i[1] = 0x3320646e;
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_state.i[2] = 0x79622d32;
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_state.i[15] = k[0];
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_state.i[12] = k[1];
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_state.i[9] = k[2];
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_state.i[6] = k[3];
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_state.i[14] = ((const uint32_t *)iv)[0];
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_state.i[11] = ((const uint32_t *)iv)[1];
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_state.i[3] = 0x6b206574;
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_state.i[4] = k[3];
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_state.i[5] = 0;
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_state.i[6] = k[7];
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_state.i[7] = k[2];
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_state.i[8] = 0;
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_state.i[9] = k[6];
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_state.i[10] = k[1];
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_state.i[11] = ((const uint32_t *)iv)[1];
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_state.i[12] = k[5];
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_state.i[13] = k[0];
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_state.i[14] = ((const uint32_t *)iv)[0];
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_state.i[15] = k[4];
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#else
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const char *const constants = "expand 32-byte k";
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const uint8_t *k = (const uint8_t *)key;
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const uint8_t *const k = (const uint8_t *)key;
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_state.i[0] = U8TO32_LITTLE(constants + 0);
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_state.i[1] = U8TO32_LITTLE(k + 0);
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_state.i[2] = U8TO32_LITTLE(k + 4);
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_state.i[3] = U8TO32_LITTLE(k + 8);
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_state.i[4] = U8TO32_LITTLE(k + 12);
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k += 16;
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_state.i[5] = U8TO32_LITTLE(constants + 4);
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_state.i[6] = U8TO32_LITTLE(((const uint8_t *)iv) + 0);
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_state.i[7] = U8TO32_LITTLE(((const uint8_t *)iv) + 4);
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_state.i[8] = 0;
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_state.i[9] = 0;
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_state.i[10] = U8TO32_LITTLE(constants + 8);
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_state.i[11] = U8TO32_LITTLE(k + 0);
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_state.i[12] = U8TO32_LITTLE(k + 4);
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_state.i[13] = U8TO32_LITTLE(k + 8);
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_state.i[14] = U8TO32_LITTLE(k + 12);
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_state.i[11] = U8TO32_LITTLE(k + 16);
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_state.i[12] = U8TO32_LITTLE(k + 20);
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_state.i[13] = U8TO32_LITTLE(k + 24);
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_state.i[14] = U8TO32_LITTLE(k + 28);
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_state.i[15] = U8TO32_LITTLE(constants + 12);
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_state.i[0] = U8TO32_LITTLE(constants + 0);
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#endif
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}
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