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AES-NI encrypt and decrypt

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This commit is contained in:
orignal 2014-05-07 15:39:30 -04:00
parent 527ac413b1
commit 236c606578
2 changed files with 59 additions and 3 deletions
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56
aes.cpp
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@ -33,7 +33,7 @@ namespace crypto
"add $32, %%rcx \n" "add $32, %%rcx \n"
void ECNEncryptionAESNI::SetKey (const uint8_t * key) void ECNCryptoAESNI::SetKey (const uint8_t * key)
{ {
__asm__ __asm__
( (
@ -72,6 +72,60 @@ namespace crypto
); );
} }
void ECNCryptoAESNI::Encrypt (const ChipherBlock * in, ChipherBlock * out)
{
__asm__
(
"movq %0, %%rdx \n"
"movups (%%rsi), %%xmm0 \n"
"pxor (%%rdx), %%xmm0 \n"
"aesenc 16(%%rdx), %%xmm0 \n"
"aesenc 32(%%rdx), %%xmm0 \n"
"aesenc 64(%%rdx), %%xmm0 \n"
"aesenc 80(%%rdx), %%xmm0 \n"
"aesenc 96(%%rdx), %%xmm0 \n"
"aesenc 112(%%rdx), %%xmm0 \n"
"aesenc 128(%%rdx), %%xmm0 \n"
"aesenc 144(%%rdx), %%xmm0 \n"
"aesenc 160(%%rdx), %%xmm0 \n"
"aesenc 176(%%rdx), %%xmm0 \n"
"aesenc 192(%%rdx), %%xmm0 \n"
"aesenc 208(%%rdx), %%xmm0 \n"
"aesenclast 224(%%rdx), %%xmm0 \n"
"movups %%xmm0, (%%rdi) \n"
:
: "S" (in), "D" (out), "r" ((uint64_t)m_KeySchedule)
: "%rdx"
);
}
void ECNCryptoAESNI::Decrypt (const ChipherBlock * in, ChipherBlock * out)
{
__asm__
(
"movq %0, %%rdx \n"
"movups (%%rsi), %%xmm0 \n"
"pxor 224(%%rdx), %%xmm0 \n"
"aesdec 208(%%rdx), %%xmm0 \n"
"aesdec 192(%%rdx), %%xmm0 \n"
"aesdec 176(%%rdx), %%xmm0 \n"
"aesdec 160(%%rdx), %%xmm0 \n"
"aesdec 144(%%rdx), %%xmm0 \n"
"aesdec 128(%%rdx), %%xmm0 \n"
"aesdec 112(%%rdx), %%xmm0 \n"
"aesdec 96(%%rdx), %%xmm0 \n"
"aesdec 80(%%rdx), %%xmm0 \n"
"aesdec 64(%%rdx), %%xmm0 \n"
"aesdec 32(%%rdx), %%xmm0 \n"
"aesdec 16(%%rdx), %%xmm0 \n"
"aesdeclast (%%rdx), %%xmm0 \n"
"movups %%xmm0, (%%rdi) \n"
:
: "S" (in), "D" (out), "r" ((uint64_t)m_KeySchedule)
: "%rdx"
);
}
#endif #endif

6
aes.h
View File

@ -17,12 +17,14 @@ namespace crypto
#ifdef __x86_64__ #ifdef __x86_64__
// AES-NI assumed // AES-NI assumed
class ECNEncryptionAESNI class ECNCryptoAESNI
{ {
public: public:
void SetKey (const uint8_t * key); void SetKey (const uint8_t * key);
void Encrypt (const ChipherBlock * in, ChipherBlock * out);
void Decrypt (const ChipherBlock * in, ChipherBlock * out);
private: private:
uint32_t m_KeySchedule[4*(14+1)]; // 14 rounds for AES-256 uint32_t m_KeySchedule[4*(14+1)]; // 14 rounds for AES-256