inline T1 VectorSub(const T1& vec1, const T2& vec2)
{
return (T1)vec_sub(vec1, (T1)vec2);
}
/// \brief Shift a vector left
/// \tparam C shift byte count
/// \tparam T vector type
/// \param vec the vector
/// \returns vector
/// \details VectorShiftLeft() returns a new vector after shifting the
/// concatenation of the zero vector and the source vector by the specified
/// number of bytes. The return vector is the same type as vec.
/// \details On big endian machines VectorShiftLeft() is vec_sld(a, z,
/// c). On little endian machines VectorShiftLeft() is translated to
/// vec_sld(z, a, 16-c). You should always call the function as
/// if on a big endian machine as shown below.
///
/// uint8x16_p r1 = VectorLoad(ptr);
/// uint8x16_p r5 = VectorShiftLeft<12>(r1);
///
/// \sa Is vec_sld
/// endian sensitive? on Stack Overflow
/// \since Crypto++ 6.0
template
inline T VectorShiftLeft(const T& vec)
{
const T zero = {0};
if (C >= 16)
{
// Out of range
return zero;
}
else if (C == 0)
{
// Noop
return vec;
}
else
{
#if (CRYPTOPP_BIG_ENDIAN)
return (T)vec_sld((uint8x16_p)vec, (uint8x16_p)zero, C);
#else
return (T)vec_sld((uint8x16_p)zero, (uint8x16_p)vec, 16-C);
#endif
}
}
/// \brief Shift a vector right
/// \tparam C shift byte count
/// \tparam T vector type
/// \param vec the vector
/// \returns vector
/// \details VectorShiftRight() returns a new vector after shifting the
/// concatenation of the zero vector and the source vector by the specified
/// number of bytes. The return vector is the same type as vec.
/// \details On big endian machines VectorShiftRight() is vec_sld(a, z,
/// c). On little endian machines VectorShiftRight() is translated to
/// vec_sld(z, a, 16-c). You should always call the function as
/// if on a big endian machine as shown below.
///
/// uint8x16_p r1 = VectorLoad(ptr);
/// uint8x16_p r5 = VectorShiftRight<12>(r1);
///
/// \sa Is vec_sld
/// endian sensitive? on Stack Overflow
/// \since Crypto++ 6.0
template
inline T VectorShiftRight(const T& vec)
{
const T zero = {0};
if (C >= 16)
{
// Out of range
return zero;
}
else if (C == 0)
{
// Noop
return vec;
}
else
{
#if (CRYPTOPP_BIG_ENDIAN)
return (T)vec_sld((uint8x16_p)zero, (uint8x16_p)vec, 16-C);
#else
return (T)vec_sld((uint8x16_p)vec, (uint8x16_p)zero, C);
#endif
}
}
/// \brief Rotate a vector left
/// \tparam C shift byte count
/// \tparam T vector type
/// \param vec the vector
/// \returns vector
/// \details VectorRotateLeft() returns a new vector after rotating the
/// concatenation of the source vector with itself by the specified
/// number of bytes. The return vector is the same type as vec.
/// \sa Is vec_sld
/// endian sensitive? on Stack Overflow
/// \since Crypto++ 6.0
template
inline T VectorRotateLeft(const T& vec)
{
enum { R = C&0xf };
#if (CRYPTOPP_BIG_ENDIAN)
return (T)vec_sld((uint8x16_p)vec, (uint8x16_p)vec, R);
#else
return (T)vec_sld((uint8x16_p)vec, (uint8x16_p)vec, 16-R);
#endif
}
/// \brief Rotate a vector right
/// \tparam C shift byte count
/// \tparam T vector type
/// \param vec the vector
/// \returns vector
/// \details VectorRotateRight() returns a new vector after rotating the
/// concatenation of the source vector with itself by the specified
/// number of bytes. The return vector is the same type as vec.
/// \sa Is vec_sld
/// endian sensitive? on Stack Overflow
/// \since Crypto++ 6.0
template
inline T VectorRotateRight(const T& vec)
{
enum { R = C&0xf };
#if (CRYPTOPP_BIG_ENDIAN)
return (T)vec_sld((uint8x16_p)vec, (uint8x16_p)vec, 16-R);
#else
return (T)vec_sld((uint8x16_p)vec, (uint8x16_p)vec, R);
#endif
}
/// \brief Exchange high and low double words
/// \tparam T vector type
/// \param vec the vector
/// \returns vector
/// \since Crypto++ 7.0
template
inline T VectorSwapWords(const T& vec)
{
return (T)vec_sld((uint8x16_p)vec, (uint8x16_p)vec, 8);
}
/// \brief Extract a dword from a vector
/// \tparam T vector type
/// \param val the vector
/// \returns vector created from low dword
/// \details VectorGetLow() extracts the low dword from a vector. The low dword
/// is composed of the least significant bits and occupies bytes 8 through 15
/// when viewed as a big endian array. The return vector is the same type as
/// the original vector and padded with 0's in the most significant bit positions.
template
inline T VectorGetLow(const T& val)
{
//const T zero = {0};
//const uint8x16_p mask = {16,16,16,16, 16,16,16,16, 8,9,10,11, 12,13,14,15 };
//return (T)vec_perm(zero, val, mask);
return VectorShiftRight<8>(VectorShiftLeft<8>(val));
}
/// \brief Extract a dword from a vector
/// \tparam T vector type
/// \param val the vector
/// \returns vector created from high dword
/// \details VectorGetHigh() extracts the high dword from a vector. The high dword
/// is composed of the most significant bits and occupies bytes 0 through 7
/// when viewed as a big endian array. The return vector is the same type as
/// the original vector and padded with 0's in the most significant bit positions.
template
inline T VectorGetHigh(const T& val)
{
//const T zero = {0};
//const uint8x16_p mask = {16,16,16,16, 16,16,16,16, 0,1,2,3, 4,5,6,7 };
//return (T)vec_perm(zero, val, mask);
return VectorShiftRight<8>(val);
}
/// \brief Compare two vectors
/// \tparam T1 vector type
/// \tparam T2 vector type
/// \param vec1 the first vector
/// \param vec2 the second vector
/// \returns true if vec1 equals vec2, false otherwise
template
inline bool VectorEqual(const T1& vec1, const T2& vec2)
{
return 1 == vec_all_eq((uint32x4_p)vec1, (uint32x4_p)vec2);
}
/// \brief Compare two vectors
/// \tparam T1 vector type
/// \tparam T2 vector type
/// \param vec1 the first vector
/// \param vec2 the second vector
/// \returns true if vec1 does not equal vec2, false otherwise
template
inline bool VectorNotEqual(const T1& vec1, const T2& vec2)
{
return 0 == vec_all_eq((uint32x4_p)vec1, (uint32x4_p)vec2);
}
#endif // POWER4 and above
// POWER7/POWER4 load and store
#if (CRYPTOPP_POWER7_AVAILABLE) || defined(CRYPTOPP_DOXYGEN_PROCESSING)
/// \brief Loads a vector from a byte array
/// \param src the byte array
/// \details Loads a vector in big endian format from a byte array.
/// VectorLoadBE will swap endianess on little endian systems.
/// \note VectorLoadBE() does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoadBE(const byte src[16])
{
#if defined(CRYPTOPP_XLC_VERSION)
return (uint32x4_p)vec_xl_be(0, (byte*)src);
#else
# if (CRYPTOPP_BIG_ENDIAN)
return (uint32x4_p)vec_vsx_ld(0, src);
# else
return (uint32x4_p)Reverse(vec_vsx_ld(0, src));
# endif
#endif
}
/// \brief Loads a vector from a byte array
/// \param src the byte array
/// \param off offset into the src byte array
/// \details Loads a vector in big endian format from a byte array.
/// VectorLoadBE will swap endianess on little endian systems.
/// \note VectorLoadBE does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoadBE(int off, const byte src[16])
{
#if defined(CRYPTOPP_XLC_VERSION)
return (uint32x4_p)vec_xl_be(off, (byte*)src);
#else
# if (CRYPTOPP_BIG_ENDIAN)
return (uint32x4_p)vec_vsx_ld(off, (byte*)src);
# else
return (uint32x4_p)Reverse(vec_vsx_ld(off, (byte*)src));
# endif
#endif
}
/// \brief Loads a vector from a byte array
/// \param src the byte array
/// \details Loads a vector in native endian format from a byte array.
/// \note VectorLoad does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoad(const byte src[16])
{
#if defined(CRYPTOPP_XLC_VERSION)
return (uint32x4_p)vec_xl(0, (byte*)src);
#else
return (uint32x4_p)vec_vsx_ld(0, (byte*)src);
#endif
}
/// \brief Loads a vector from a byte array
/// \param src the byte array
/// \param off offset into the src byte array
/// \details Loads a vector in native endian format from a byte array.
/// \note VectorLoad does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoad(int off, const byte src[16])
{
#if defined(CRYPTOPP_XLC_VERSION)
return (uint32x4_p)vec_xl(off, (byte*)src);
#else
return (uint32x4_p)vec_vsx_ld(off, (byte*)src);
#endif
}
/// \brief Loads a vector from a word array
/// \param src the word array
/// \details Loads a vector in native endian format from a word array.
/// \note VectorLoad does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoad(const word32 src[4])
{
return VectorLoad((const byte*)src);
}
/// \brief Loads a vector from a word array
/// \param src the word array
/// \param off offset into the src word array
/// \details Loads a vector in native endian format from a word array.
/// \note VectorLoad does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoad(int off, const word32 src[4])
{
return VectorLoad(off, (const byte*)src);
}
/// \brief Stores a vector to a byte array
/// \tparam T vector type
/// \param src the vector
/// \param dest the byte array
/// \details Stores a vector in big endian format to a byte array.
/// VectorStoreBE will swap endianess on little endian systems.
/// \note VectorStoreBE does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
template
inline void VectorStoreBE(const T& src, byte dest[16])
{
#if defined(CRYPTOPP_XLC_VERSION)
vec_xst_be((uint8x16_p)src, 0, (byte*)dest);
#else
# if (CRYPTOPP_BIG_ENDIAN)
vec_vsx_st((uint8x16_p)src, 0, (byte*)dest);
# else
vec_vsx_st((uint8x16_p)Reverse(src), 0, (byte*)dest);
# endif
#endif
}
/// \brief Stores a vector to a byte array
/// \tparam T vector type
/// \param src the vector
/// \param off offset into the dest byte array
/// \param dest the byte array
/// \details Stores a vector in big endian format to a byte array.
/// VectorStoreBE will swap endianess on little endian systems.
/// \note VectorStoreBE does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
template
inline void VectorStoreBE(const T& src, int off, byte dest[16])
{
#if defined(CRYPTOPP_XLC_VERSION)
vec_xst_be((uint8x16_p)src, off, (byte*)dest);
#else
# if (CRYPTOPP_BIG_ENDIAN)
vec_vsx_st((uint8x16_p)src, off, (byte*)dest);
# else
vec_vsx_st((uint8x16_p)Reverse(src), off, (byte*)dest);
# endif
#endif
}
/// \brief Stores a vector to a byte array
/// \tparam T vector type
/// \param src the vector
/// \param dest the byte array
/// \details Stores a vector in native endian format to a byte array.
/// \note VectorStore does not require an aligned array.
/// \since Crypto++ 6.0
template
inline void VectorStore(const T& src, byte dest[16])
{
#if defined(CRYPTOPP_XLC_VERSION)
vec_xst((uint8x16_p)src, 0, (byte*)dest);
#else
vec_vsx_st((uint8x16_p)src, 0, (byte*)dest);
#endif
}
/// \brief Stores a vector to a byte array
/// \tparam T vector type
/// \param src the vector
/// \param dest the byte array
/// \details Stores a vector in native endian format to a byte array.
/// \note VectorStore does not require an aligned array.
/// \since Crypto++ 6.0
template
inline void VectorStore(byte dest[16], const T& src)
{
#if defined(CRYPTOPP_XLC_VERSION)
vec_xst((uint8x16_p)src, 0, (byte*)dest);
#else
vec_vsx_st((uint8x16_p)src, 0, (byte*)dest);
#endif
}
/// \brief Stores a vector to a byte array
/// \tparam T vector type
/// \param src the vector
/// \param off offset into the dest byte array
/// \param dest the byte array
/// \details Stores a vector in native endian format to a byte array.
/// \note VectorStore does not require an aligned array.
/// \since Crypto++ 6.0
template
inline void VectorStore(const T& src, int off, byte dest[16])
{
#if defined(CRYPTOPP_XLC_VERSION)
vec_xst((uint8x16_p)src, off, (byte*)dest);
#else
vec_vsx_st((uint8x16_p)src, off, (byte*)dest);
#endif
}
#else // ########## Not CRYPTOPP_POWER7_AVAILABLE ##########
/// \brief Loads a vector from a byte array
/// \param src the byte array
/// \details Loads a vector in native endian format from a byte array.
/// \note VectorLoad does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoad(const byte src[16])
{
if (IsAlignedOn(src, 16))
{
return (uint32x4_p)vec_ld(0, src);
}
else
{
// http://www.nxp.com/docs/en/reference-manual/ALTIVECPEM.pdf
const uint8x16_p perm = vec_lvsl(0, src);
const uint8x16_p low = vec_ld(0, src);
const uint8x16_p high = vec_ld(15, src);
return (uint32x4_p)vec_perm(low, high, perm);
}
}
/// \brief Loads a vector from a byte array
/// \param src the byte array
/// \param off offset into the src byte array
/// \details Loads a vector in native endian format from a byte array.
/// \note VectorLoad does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoad(int off, const byte src[16])
{
if (IsAlignedOn(src, 16))
{
return (uint32x4_p)vec_ld(off, src);
}
else
{
// http://www.nxp.com/docs/en/reference-manual/ALTIVECPEM.pdf
const uint8x16_p perm = vec_lvsl(off, src);
const uint8x16_p low = vec_ld(off, src);
const uint8x16_p high = vec_ld(15, src);
return (uint32x4_p)vec_perm(low, high, perm);
}
}
/// \brief Loads a vector from a word array
/// \param src the word array
/// \details Loads a vector in native endian format from a word array.
/// \note VectorLoad does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoad(const word32 src[4])
{
return VectorLoad((const byte*)src);
}
/// \brief Loads a vector from a word array
/// \param src the word array
/// \param off offset into the src word array
/// \details Loads a vector in native endian format from a word array.
/// \note VectorLoad does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoad(int off, const word32 src[4])
{
return VectorLoad(off, (const byte*)src);
}
/// \brief Loads a vector from a byte array
/// \param src the byte array
/// \details Loads a vector in big endian format from a byte array.
/// VectorLoadBE will swap endianess on little endian systems.
/// \note VectorLoadBE() does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
inline uint32x4_p VectorLoadBE(const byte src[16])
{
#if (CRYPTOPP_BIG_ENDIAN)
return (uint32x4_p)VectorLoad(src);
#else
return (uint32x4_p)Reverse(VectorLoad(src));
#endif
}
template
inline void VectorStore(const T& data, byte dest[16])
{
if (IsAlignedOn(dest, 16))
{
vec_st((uint8x16_p)data, 0, dest);
}
else
{
// http://www.nxp.com/docs/en/reference-manual/ALTIVECPEM.pdf
uint8x16_p perm = (uint8x16_p)vec_perm(data, data, vec_lvsr(0, dest));
vec_ste((uint8x16_p) perm, 0, (unsigned char*) dest);
vec_ste((uint16x8_p) perm, 1, (unsigned short*)dest);
vec_ste((uint32x4_p) perm, 3, (unsigned int*) dest);
vec_ste((uint32x4_p) perm, 4, (unsigned int*) dest);
vec_ste((uint32x4_p) perm, 8, (unsigned int*) dest);
vec_ste((uint32x4_p) perm, 12, (unsigned int*) dest);
vec_ste((uint16x8_p) perm, 14, (unsigned short*)dest);
vec_ste((uint8x16_p) perm, 15, (unsigned char*) dest);
}
}
/// \brief Stores a vector to a byte array
/// \tparam T vector type
/// \param src the vector
/// \param dest the byte array
/// \details Stores a vector in big endian format to a byte array.
/// VectorStoreBE will swap endianess on little endian systems.
/// \note VectorStoreBE does not require an aligned array.
/// \sa Reverse(), VectorLoadBE(), VectorLoad()
/// \since Crypto++ 6.0
template
inline void VectorStoreBE(const T& src, byte dest[16])
{
#if (CRYPTOPP_BIG_ENDIAN)
VectorStore(src, dest);
#else
VectorStore(Reverse(src), dest);
#endif
}
#endif // POWER4/POWER7 load and store
// POWER8 crypto
#if (CRYPTOPP_POWER8_AVAILABLE) || defined(CRYPTOPP_DOXYGEN_PROCESSING)
/// \brief One round of AES encryption
/// \tparam T1 vector type
/// \tparam T2 vector type
/// \param state the state vector
/// \param key the subkey vector
/// \details VectorEncrypt performs one round of AES encryption of state
/// using subkey key. The return vector is the same type as vec1.
/// \since Crypto++ 6.0
template
inline T1 VectorEncrypt(const T1& state, const T2& key)
{
#if defined(CRYPTOPP_XLC_VERSION)
return (T1)__vcipher((uint8x16_p)state, (uint8x16_p)key);
#elif defined(CRYPTOPP_GCC_VERSION)
return (T1)__builtin_crypto_vcipher((uint64x2_p)state, (uint64x2_p)key);
#else
CRYPTOPP_ASSERT(0);
#endif
}
/// \brief Final round of AES encryption
/// \tparam T1 vector type
/// \tparam T2 vector type
/// \param state the state vector
/// \param key the subkey vector
/// \details VectorEncryptLast performs the final round of AES encryption
/// of state using subkey key. The return vector is the same type as vec1.
/// \since Crypto++ 6.0
template
inline T1 VectorEncryptLast(const T1& state, const T2& key)
{
#if defined(CRYPTOPP_XLC_VERSION)
return (T1)__vcipherlast((uint8x16_p)state, (uint8x16_p)key);
#elif defined(CRYPTOPP_GCC_VERSION)
return (T1)__builtin_crypto_vcipherlast((uint64x2_p)state, (uint64x2_p)key);
#else
CRYPTOPP_ASSERT(0);
#endif
}
/// \brief One round of AES decryption
/// \tparam T1 vector type
/// \tparam T2 vector type
/// \param state the state vector
/// \param key the subkey vector
/// \details VectorDecrypt performs one round of AES decryption of state
/// using subkey key. The return vector is the same type as vec1.
/// \since Crypto++ 6.0
template
inline T1 VectorDecrypt(const T1& state, const T2& key)
{
#if defined(CRYPTOPP_XLC_VERSION)
return (T1)__vncipher((uint8x16_p)state, (uint8x16_p)key);
#elif defined(CRYPTOPP_GCC_VERSION)
return (T1)__builtin_crypto_vncipher((uint64x2_p)state, (uint64x2_p)key);
#else
CRYPTOPP_ASSERT(0);
#endif
}
/// \brief Final round of AES decryption
/// \tparam T1 vector type
/// \tparam T2 vector type
/// \param state the state vector
/// \param key the subkey vector
/// \details VectorDecryptLast performs the final round of AES decryption
/// of state using subkey key. The return vector is the same type as vec1.
/// \since Crypto++ 6.0
template
inline T1 VectorDecryptLast(const T1& state, const T2& key)
{
#if defined(CRYPTOPP_XLC_VERSION)
return (T1)__vncipherlast((uint8x16_p)state, (uint8x16_p)key);
#elif defined(CRYPTOPP_GCC_VERSION)
return (T1)__builtin_crypto_vncipherlast((uint64x2_p)state, (uint64x2_p)key);
#else
CRYPTOPP_ASSERT(0);
#endif
}
#endif // POWER8 crypto
#if (CRYPTOPP_POWER8_AVAILABLE) || defined(CRYPTOPP_DOXYGEN_PROCESSING)
/// \brief SHA256 Sigma functions
/// \tparam func function
/// \tparam subfunc sub-function
/// \tparam T vector type
/// \param vec the block to transform
/// \details VectorSHA256 selects sigma0, sigma1, Sigma0, Sigma1 based on
/// func and subfunc. The return vector is the same type as vec.
/// \since Crypto++ 6.0
template
inline T VectorSHA256(const T& vec)
{
#if defined(CRYPTOPP_XLC_VERSION)
return (T)__vshasigmaw((uint32x4_p)vec, func, subfunc);
#elif defined(CRYPTOPP_GCC_VERSION)
return (T)__builtin_crypto_vshasigmaw((uint32x4_p)vec, func, subfunc);
#else
CRYPTOPP_ASSERT(0);
#endif
}
/// \brief SHA512 Sigma functions
/// \tparam func function
/// \tparam subfunc sub-function
/// \tparam T vector type
/// \param vec the block to transform
/// \details VectorSHA512 selects sigma0, sigma1, Sigma0, Sigma1 based on
/// func and subfunc. The return vector is the same type as vec.
/// \since Crypto++ 6.0
template
inline T VectorSHA512(const T& vec)
{
#if defined(CRYPTOPP_XLC_VERSION)
return (T)__vshasigmad((uint64x2_p)vec, func, subfunc);
#elif defined(CRYPTOPP_GCC_VERSION)
return (T)__builtin_crypto_vshasigmad((uint64x2_p)vec, func, subfunc);
#else
CRYPTOPP_ASSERT(0);
#endif
}
#endif // POWER8 crypto
#endif // CRYPTOPP_ALTIVEC_AVAILABLE
NAMESPACE_END
#endif // CRYPTOPP_PPC_CRYPTO_H