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/*
* AES using POWER8 crypto extensions
*
* Contributed by Jeffrey Walton
*
* Further changes
* (C) 2018 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/aes.h>
#include <botan/cpuid.h>
#include <altivec.h>
#undef vector
#undef bool
namespace Botan {
namespace {
__vector unsigned long long LoadKey(const uint32_t* src)
{
__vector unsigned int vec = vec_vsx_ld(0, src);
if(CPUID::is_little_endian())
{
const __vector unsigned char mask = {12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3};
const __vector unsigned char zero = {0};
return (__vector unsigned long long)vec_perm((__vector unsigned char)vec, zero, mask);
}
else
{
return (__vector unsigned long long)vec;
}
}
__vector unsigned char Reverse8x16(const __vector unsigned char src)
{
if(CPUID::is_little_endian())
{
const __vector unsigned char mask = {15,14,13,12, 11,10,9,8, 7,6,5,4, 3,2,1,0};
const __vector unsigned char zero = {0};
return vec_perm(src, zero, mask);
}
else
{
return src;
}
}
__vector unsigned long long LoadBlock(const uint8_t* src)
{
return (__vector unsigned long long)Reverse8x16(vec_vsx_ld(0, src));
}
void StoreBlock(const __vector unsigned long long src, uint8_t* dest)
{
vec_vsx_st(Reverse8x16((__vector unsigned char)src), 0, dest);
}
}
BOTAN_FUNC_ISA("crypto")
void AES_128::power8_encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const
{
const __vector unsigned long long K0 = LoadKey(&m_EK[0]);
const __vector unsigned long long K1 = LoadKey(&m_EK[4]);
const __vector unsigned long long K2 = LoadKey(&m_EK[8]);
const __vector unsigned long long K3 = LoadKey(&m_EK[12]);
const __vector unsigned long long K4 = LoadKey(&m_EK[16]);
const __vector unsigned long long K5 = LoadKey(&m_EK[20]);
const __vector unsigned long long K6 = LoadKey(&m_EK[24]);
const __vector unsigned long long K7 = LoadKey(&m_EK[28]);
const __vector unsigned long long K8 = LoadKey(&m_EK[32]);
const __vector unsigned long long K9 = LoadKey(&m_EK[36]);
const __vector unsigned long long K10 = LoadBlock(m_ME.data());
for(size_t i = 0; i != blocks; ++i)
{
__vector unsigned long long B = LoadBlock(in);
B = vec_xor(B, K0);
B = __builtin_crypto_vcipher(B, K1);
B = __builtin_crypto_vcipher(B, K2);
B = __builtin_crypto_vcipher(B, K3);
B = __builtin_crypto_vcipher(B, K4);
B = __builtin_crypto_vcipher(B, K5);
B = __builtin_crypto_vcipher(B, K6);
B = __builtin_crypto_vcipher(B, K7);
B = __builtin_crypto_vcipher(B, K8);
B = __builtin_crypto_vcipher(B, K9);
B = __builtin_crypto_vcipherlast(B, K10);
StoreBlock(B, out);
out += 16;
in += 16;
}
}
BOTAN_FUNC_ISA("crypto")
void AES_128::power8_decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const
{
const __vector unsigned long long K0 = LoadBlock(m_ME.data());
const __vector unsigned long long K1 = LoadKey(&m_EK[36]);
const __vector unsigned long long K2 = LoadKey(&m_EK[32]);
const __vector unsigned long long K3 = LoadKey(&m_EK[28]);
const __vector unsigned long long K4 = LoadKey(&m_EK[24]);
const __vector unsigned long long K5 = LoadKey(&m_EK[20]);
const __vector unsigned long long K6 = LoadKey(&m_EK[16]);
const __vector unsigned long long K7 = LoadKey(&m_EK[12]);
const __vector unsigned long long K8 = LoadKey(&m_EK[8]);
const __vector unsigned long long K9 = LoadKey(&m_EK[4]);
const __vector unsigned long long K10 = LoadKey(&m_EK[0]);
for(size_t i = 0; i != blocks; ++i)
{
__vector unsigned long long B = LoadBlock(in);
B = vec_xor(B, K0);
B = __builtin_crypto_vncipher(B, K1);
B = __builtin_crypto_vncipher(B, K2);
B = __builtin_crypto_vncipher(B, K3);
B = __builtin_crypto_vncipher(B, K4);
B = __builtin_crypto_vncipher(B, K5);
B = __builtin_crypto_vncipher(B, K6);
B = __builtin_crypto_vncipher(B, K7);
B = __builtin_crypto_vncipher(B, K8);
B = __builtin_crypto_vncipher(B, K9);
B = __builtin_crypto_vncipherlast(B, K10);
StoreBlock(B, out);
out += 16;
in += 16;
}
}
BOTAN_FUNC_ISA("crypto")
void AES_192::power8_encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const
{
const __vector unsigned long long K0 = LoadKey(&m_EK[0]);
const __vector unsigned long long K1 = LoadKey(&m_EK[4]);
const __vector unsigned long long K2 = LoadKey(&m_EK[8]);
const __vector unsigned long long K3 = LoadKey(&m_EK[12]);
const __vector unsigned long long K4 = LoadKey(&m_EK[16]);
const __vector unsigned long long K5 = LoadKey(&m_EK[20]);
const __vector unsigned long long K6 = LoadKey(&m_EK[24]);
const __vector unsigned long long K7 = LoadKey(&m_EK[28]);
const __vector unsigned long long K8 = LoadKey(&m_EK[32]);
const __vector unsigned long long K9 = LoadKey(&m_EK[36]);
const __vector unsigned long long K10 = LoadKey(&m_EK[40]);
const __vector unsigned long long K11 = LoadKey(&m_EK[44]);
const __vector unsigned long long K12 = LoadBlock(m_ME.data());
for(size_t i = 0; i != blocks; ++i)
{
__vector unsigned long long B = LoadBlock(in);
B = vec_xor(B, K0);
B = __builtin_crypto_vcipher(B, K1);
B = __builtin_crypto_vcipher(B, K2);
B = __builtin_crypto_vcipher(B, K3);
B = __builtin_crypto_vcipher(B, K4);
B = __builtin_crypto_vcipher(B, K5);
B = __builtin_crypto_vcipher(B, K6);
B = __builtin_crypto_vcipher(B, K7);
B = __builtin_crypto_vcipher(B, K8);
B = __builtin_crypto_vcipher(B, K9);
B = __builtin_crypto_vcipher(B, K10);
B = __builtin_crypto_vcipher(B, K11);
B = __builtin_crypto_vcipherlast(B, K12);
StoreBlock(B, out);
out += 16;
in += 16;
}
}
BOTAN_FUNC_ISA("crypto")
void AES_192::power8_decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const
{
const __vector unsigned long long K0 = LoadBlock(m_ME.data());
const __vector unsigned long long K1 = LoadKey(&m_EK[44]);
const __vector unsigned long long K2 = LoadKey(&m_EK[40]);
const __vector unsigned long long K3 = LoadKey(&m_EK[36]);
const __vector unsigned long long K4 = LoadKey(&m_EK[32]);
const __vector unsigned long long K5 = LoadKey(&m_EK[28]);
const __vector unsigned long long K6 = LoadKey(&m_EK[24]);
const __vector unsigned long long K7 = LoadKey(&m_EK[20]);
const __vector unsigned long long K8 = LoadKey(&m_EK[16]);
const __vector unsigned long long K9 = LoadKey(&m_EK[12]);
const __vector unsigned long long K10 = LoadKey(&m_EK[8]);
const __vector unsigned long long K11 = LoadKey(&m_EK[4]);
const __vector unsigned long long K12 = LoadKey(&m_EK[0]);
for(size_t i = 0; i != blocks; ++i)
{
__vector unsigned long long B = LoadBlock(in);
B = vec_xor(B, K0);
B = __builtin_crypto_vncipher(B, K1);
B = __builtin_crypto_vncipher(B, K2);
B = __builtin_crypto_vncipher(B, K3);
B = __builtin_crypto_vncipher(B, K4);
B = __builtin_crypto_vncipher(B, K5);
B = __builtin_crypto_vncipher(B, K6);
B = __builtin_crypto_vncipher(B, K7);
B = __builtin_crypto_vncipher(B, K8);
B = __builtin_crypto_vncipher(B, K9);
B = __builtin_crypto_vncipher(B, K10);
B = __builtin_crypto_vncipher(B, K11);
B = __builtin_crypto_vncipherlast(B, K12);
StoreBlock(B, out);
out += 16;
in += 16;
}
}
BOTAN_FUNC_ISA("crypto")
void AES_256::power8_encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const
{
const __vector unsigned long long K0 = LoadKey(&m_EK[0]);
const __vector unsigned long long K1 = LoadKey(&m_EK[4]);
const __vector unsigned long long K2 = LoadKey(&m_EK[8]);
const __vector unsigned long long K3 = LoadKey(&m_EK[12]);
const __vector unsigned long long K4 = LoadKey(&m_EK[16]);
const __vector unsigned long long K5 = LoadKey(&m_EK[20]);
const __vector unsigned long long K6 = LoadKey(&m_EK[24]);
const __vector unsigned long long K7 = LoadKey(&m_EK[28]);
const __vector unsigned long long K8 = LoadKey(&m_EK[32]);
const __vector unsigned long long K9 = LoadKey(&m_EK[36]);
const __vector unsigned long long K10 = LoadKey(&m_EK[40]);
const __vector unsigned long long K11 = LoadKey(&m_EK[44]);
const __vector unsigned long long K12 = LoadKey(&m_EK[48]);
const __vector unsigned long long K13 = LoadKey(&m_EK[52]);
const __vector unsigned long long K14 = LoadBlock(m_ME.data());
for(size_t i = 0; i != blocks; ++i)
{
__vector unsigned long long B = LoadBlock(in);
B = vec_xor(B, K0);
B = __builtin_crypto_vcipher(B, K1);
B = __builtin_crypto_vcipher(B, K2);
B = __builtin_crypto_vcipher(B, K3);
B = __builtin_crypto_vcipher(B, K4);
B = __builtin_crypto_vcipher(B, K5);
B = __builtin_crypto_vcipher(B, K6);
B = __builtin_crypto_vcipher(B, K7);
B = __builtin_crypto_vcipher(B, K8);
B = __builtin_crypto_vcipher(B, K9);
B = __builtin_crypto_vcipher(B, K10);
B = __builtin_crypto_vcipher(B, K11);
B = __builtin_crypto_vcipher(B, K12);
B = __builtin_crypto_vcipher(B, K13);
B = __builtin_crypto_vcipherlast(B, K14);
StoreBlock(B, out);
out += 16;
in += 16;
}
}
BOTAN_FUNC_ISA("crypto")
void AES_256::power8_decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const
{
const __vector unsigned long long K0 = LoadBlock(m_ME.data());
const __vector unsigned long long K1 = LoadKey(&m_EK[52]);
const __vector unsigned long long K2 = LoadKey(&m_EK[48]);
const __vector unsigned long long K3 = LoadKey(&m_EK[44]);
const __vector unsigned long long K4 = LoadKey(&m_EK[40]);
const __vector unsigned long long K5 = LoadKey(&m_EK[36]);
const __vector unsigned long long K6 = LoadKey(&m_EK[32]);
const __vector unsigned long long K7 = LoadKey(&m_EK[28]);
const __vector unsigned long long K8 = LoadKey(&m_EK[24]);
const __vector unsigned long long K9 = LoadKey(&m_EK[20]);
const __vector unsigned long long K10 = LoadKey(&m_EK[16]);
const __vector unsigned long long K11 = LoadKey(&m_EK[12]);
const __vector unsigned long long K12 = LoadKey(&m_EK[8]);
const __vector unsigned long long K13 = LoadKey(&m_EK[4]);
const __vector unsigned long long K14 = LoadKey(&m_EK[0]);
for(size_t i = 0; i != blocks; ++i)
{
__vector unsigned long long B = LoadBlock(in);
B = vec_xor(B, K0);
B = __builtin_crypto_vncipher(B, K1);
B = __builtin_crypto_vncipher(B, K2);
B = __builtin_crypto_vncipher(B, K3);
B = __builtin_crypto_vncipher(B, K4);
B = __builtin_crypto_vncipher(B, K5);
B = __builtin_crypto_vncipher(B, K6);
B = __builtin_crypto_vncipher(B, K7);
B = __builtin_crypto_vncipher(B, K8);
B = __builtin_crypto_vncipher(B, K9);
B = __builtin_crypto_vncipher(B, K10);
B = __builtin_crypto_vncipher(B, K11);
B = __builtin_crypto_vncipher(B, K12);
B = __builtin_crypto_vncipher(B, K13);
B = __builtin_crypto_vncipherlast(B, K14);
StoreBlock(B, out);
out += 16;
in += 16;
}
}
}
|
