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AES buffer aligned to 16 bytes

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orignal 2014-11-18 12:11:45 -05:00
parent 96387aecbd
commit dd1a798128
2 changed files with 30 additions and 17 deletions
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16
aes.cpp
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@ -8,14 +8,6 @@ namespace crypto
{
#ifdef AESNI
ECBCryptoAESNI::ECBCryptoAESNI ()
{
m_KeySchedule = m_UnalignedBuffer;
uint8_t rem = ((uint64_t)m_KeySchedule) & 0x0f;
if (rem)
m_KeySchedule += (16 - rem);
}
#define KeyExpansion256(round0,round1) \
"pshufd $0xff, %%xmm2, %%xmm2 \n" \
@ -73,7 +65,7 @@ namespace crypto
"pxor %%xmm2, %%xmm1 \n"
"movups %%xmm1, 224(%[sched]) \n"
: // output
: [key]"r"((const uint8_t *)key), [sched]"r"(m_KeySchedule) // input
: [key]"r"((const uint8_t *)key), [sched]"r"(GetKeySchedule ()) // input
: "%xmm1", "%xmm2", "%xmm3", "%xmm4" // clogged
);
}
@ -102,7 +94,7 @@ namespace crypto
"movups (%[in]), %%xmm0 \n"
EncryptAES256(sched)
"movups %%xmm0, (%[out]) \n"
: : [sched]"r"(m_KeySchedule), [in]"r"(in), [out]"r"(out) : "%xmm0"
: : [sched]"r"(GetKeySchedule ()), [in]"r"(in), [out]"r"(out) : "%xmm0"
);
}
@ -130,7 +122,7 @@ namespace crypto
"movups (%[in]), %%xmm0 \n"
DecryptAES256(sched)
"movups %%xmm0, (%[out]) \n"
: : [sched]"r"(m_KeySchedule), [in]"r"(in), [out]"r"(out) : "%xmm0"
: : [sched]"r"(GetKeySchedule ()), [in]"r"(in), [out]"r"(out) : "%xmm0"
);
}
@ -158,7 +150,7 @@ namespace crypto
CallAESIMC(176)
CallAESIMC(192)
CallAESIMC(208)
: : [shed]"r"(m_KeySchedule) : "%xmm0"
: : [shed]"r"(GetKeySchedule ()) : "%xmm0"
);
}