Mirrors/i2pd
2
0
Fork 0
mirror of https://github.com/PurpleI2P/i2pd.git synced 2025-01-22 21:37:17 +01:00
Code Issues Actions 6 Packages Projects Releases Wiki Activity

AES-NI encrypt and decrypt

Browse source
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
Show stats Download patch file Download diff file Expand all files Collapse all files

56
aes.cpp
View file

@ -33,7 +33,7 @@ namespace crypto
"add $32, %%rcx \n"
void ECNEncryptionAESNI::SetKey (const uint8_t * key)
void ECNCryptoAESNI::SetKey (const uint8_t * key)
{
__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

4
aes.h
View file

@ -17,11 +17,13 @@ namespace crypto
#ifdef __x86_64__
// AES-NI assumed
class ECNEncryptionAESNI
class ECNCryptoAESNI
{
public:
void SetKey (const uint8_t * key);
void Encrypt (const ChipherBlock * in, ChipherBlock * out);
void Decrypt (const ChipherBlock * in, ChipherBlock * out);
private: