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one block CBC encryption

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This commit is contained in:
orignal 2014-05-14 14:54:01 -04:00
parent 99c5331cad
commit 0a53555ac7
3 changed files with 46 additions and 2 deletions

42
aes.cpp
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@ -204,6 +204,27 @@ namespace crypto
return true;
}
void CBCEncryption::Encrypt (const uint8_t * in, uint8_t * out)
{
#ifdef __x86_64__
__asm__
(
"movups (%[iv]), %%xmm1 \n"
"movups (%[in]), %%xmm0 \n"
"pxor %%xmm1, %%xmm0 \n"
EncryptAES256
"movups %%xmm0, (%[out]) \n"
"movups %%xmm0, (%[iv]) \n"
:
: [iv]"r"(&m_LastBlock), [sched]"r"(m_ECBEncryption.GetKeySchedule ()),
[in]"r"(in), [out]"r"(out)
: "%xmm0", "%xmm1", "memory"
);
#else
Encrypt (1, (const ChipherBlock *)in, (ChipherBlock *)out);
#endif
}
void CBCDecryption::Decrypt (int numBlocks, const ChipherBlock * in, ChipherBlock * out)
{
#ifdef __x86_64__
@ -245,6 +266,27 @@ namespace crypto
Decrypt (d.quot, (const ChipherBlock *)in, (ChipherBlock *)out);
return true;
}
void CBCDecryption::Decrypt (const uint8_t * in, uint8_t * out)
{
#ifdef __x86_64__
__asm__
(
"movups (%[iv]), %%xmm1 \n"
"movups (%[in]), %%xmm0 \n"
"movups %%xmm0, (%[iv]) \n"
DecryptAES256
"pxor %%xmm1, %%xmm0 \n"
"movups %%xmm0, (%[out]) \n"
:
: [iv]"r"(&m_IV), [sched]"r"(m_ECBDecryption.GetKeySchedule ()),
[in]"r"(in), [out]"r"(out)
: "%xmm0", "%xmm1", "memory"
);
#else
Decrypt (1, (const ChipherBlock *)in, (ChipherBlock *)out);
#endif
}
}
}