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Cleanup donna files

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This commit is contained in:
Jeffrey Walton 2018-12-13 14:17:36 -05:00
parent 560c332f19
commit b19abcde1f
No known key found for this signature in database
GPG Key ID: B36AB348921B1838
3 changed files with 27 additions and 112 deletions
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15
donna_32.cpp
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@ -42,6 +42,7 @@ typedef word32 bignum25519align16[12];
#define mul32x32_64(a,b) (((word64)(a))*(b))
const byte basePoint[32] = {9};
const word32 reduce_mask_25 = (1 << 25) - 1;
const word32 reduce_mask_26 = (1 << 26) - 1;
@ -354,7 +355,7 @@ curve25519_square_times(bignum25519 out, const bignum25519 in, int count) {
/* Take a little-endian, 32-byte number and expand it into polynomial form */
void
curve25519_expand(bignum25519 out, const unsigned char in[32]) {
curve25519_expand(bignum25519 out, const byte in[32]) {
word32 x0,x1,x2,x3,x4,x5,x6,x7;
GetBlock<word32, LittleEndian> block(in);
@ -376,7 +377,7 @@ curve25519_expand(bignum25519 out, const unsigned char in[32]) {
* little-endian, 32-byte array
*/
void
curve25519_contract(unsigned char out[32], const bignum25519 in) {
curve25519_contract(byte out[32], const bignum25519 in) {
bignum25519 f;
curve25519_copy(f, in);
@ -436,10 +437,10 @@ curve25519_contract(unsigned char out[32], const bignum25519 in) {
f[9] <<= 6;
#define F(i, s) \
out[s+0] |= (unsigned char )(f[i] & 0xff); \
out[s+1] = (unsigned char )((f[i] >> 8) & 0xff); \
out[s+2] = (unsigned char )((f[i] >> 16) & 0xff); \
out[s+3] = (unsigned char )((f[i] >> 24) & 0xff);
out[s+0] |= (byte)(f[i] & 0xff); \
out[s+1] = (byte)((f[i] >> 8) & 0xff); \
out[s+2] = (byte)((f[i] >> 16) & 0xff); \
out[s+3] = (byte)((f[i] >> 24) & 0xff);
out[0] = 0;
out[16] = 0;
@ -475,8 +476,6 @@ int curve25519_CXX(byte sharedKey[32], const byte secretKey[32], const byte othe
int curve25519(byte publicKey[32], const byte secretKey[32])
{
const byte basePoint[32] = {9};
#if (CRYPTOPP_SSE2_INTRIN_AVAILABLE)
if (HasSSE2())
return curve25519_SSE2(publicKey, secretKey, basePoint);

10
donna_64.cpp
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@ -49,6 +49,7 @@ typedef word64 bignum25519[5];
#define shr128(out,in,shift) out = (word64)(in >> (shift));
#define shl128(out,in,shift) out = (word64)((in << shift) >> 64);
const byte basePoint[32] = {9};
const word64 reduce_mask_40 = ((word64)1 << 40) - 1;
const word64 reduce_mask_51 = ((word64)1 << 51) - 1;
const word64 reduce_mask_56 = ((word64)1 << 56) - 1;
@ -183,7 +184,6 @@ curve25519_mul(bignum25519 out, const bignum25519 in2, const bignum25519 in) {
mul64x64_128(mul, r4, s4) add128(t[3], mul)
#endif
r0 = lo128(t[0]) & reduce_mask_51; shr128(c, t[0], 51);
add128_64(t[1], c) r1 = lo128(t[1]) & reduce_mask_51; shr128(c, t[1], 51);
add128_64(t[2], c) r2 = lo128(t[2]) & reduce_mask_51; shr128(c, t[2], 51);
@ -292,7 +292,7 @@ curve25519_square(bignum25519 out, const bignum25519 in) {
/* Take a little-endian, 32-byte number and expand it into polynomial form */
inline void
curve25519_expand(bignum25519 out, const unsigned char *in) {
curve25519_expand(bignum25519 out, const byte *in) {
word64 x0,x1,x2,x3;
GetBlock<word64, LittleEndian> block(in);
@ -309,7 +309,7 @@ curve25519_expand(bignum25519 out, const unsigned char *in) {
* little-endian, 32-byte array
*/
inline void
curve25519_contract(unsigned char *out, const bignum25519 input) {
curve25519_contract(byte *out, const bignum25519 input) {
word64 t[5];
word64 f, i;
@ -348,7 +348,7 @@ curve25519_contract(unsigned char *out, const bignum25519 input) {
#define write51full(n,shift) \
f = ((t[n] >> shift) | (t[n+1] << (51 - shift))); \
for (i = 0; i < 8; i++, f >>= 8) *out++ = (unsigned char)f;
for (i = 0; i < 8; i++, f >>= 8) *out++ = (byte)f;
#define write51(n) write51full(n,13*n)
write51(0)
write51(1)
@ -375,8 +375,6 @@ int curve25519_CXX(byte sharedKey[32], const byte secretKey[32], const byte othe
int curve25519(byte publicKey[32], const byte secretKey[32])
{
const byte basePoint[32] = {9};
#if (CRYPTOPP_SSE2_INTRIN_AVAILABLE)
if (HasSSE2())
return curve25519_SSE2(publicKey, secretKey, basePoint);

114
donna_sse.cpp
View File

@ -33,8 +33,11 @@ using CryptoPP::byte;
using CryptoPP::word32;
using CryptoPP::word64;
using CryptoPP::GetBlock;
using CryptoPP::LittleEndian;
typedef union packedelem8_t {
unsigned char u[16];
byte u[16];
xmmi v;
} packedelem8;
@ -945,28 +948,22 @@ curve25519_square_packed64(packedelem64 *out, const packedelem64 *r) {
/* Take a little-endian, 32-byte number and expand it into polynomial form */
void
curve25519_expand(bignum25519 out, const unsigned char in[32]) {
curve25519_expand(bignum25519 out, const byte in[32]) {
word32 x0,x1,x2,x3,x4,x5,x6,x7;
x0 = *(word32 *)(in + 0);
x1 = *(word32 *)(in + 4);
x2 = *(word32 *)(in + 8);
x3 = *(word32 *)(in + 12);
x4 = *(word32 *)(in + 16);
x5 = *(word32 *)(in + 20);
x6 = *(word32 *)(in + 24);
x7 = *(word32 *)(in + 28);
GetBlock<word32, LittleEndian> block(in);
block(x0)(x1)(x2)(x3)(x4)(x5)(x6)(x7);
out[0] = ( x0 ) & 0x3ffffff;
out[0] = ( x0 ) & 0x3ffffff;
out[1] = ((((word64)x1 << 32) | x0) >> 26) & 0x1ffffff;
out[2] = ((((word64)x2 << 32) | x1) >> 19) & 0x3ffffff;
out[3] = ((((word64)x3 << 32) | x2) >> 13) & 0x1ffffff;
out[4] = (( x3) >> 6) & 0x3ffffff;
out[5] = ( x4 ) & 0x1ffffff;
out[4] = (( x3) >> 6) & 0x3ffffff;
out[5] = ( x4 ) & 0x1ffffff;
out[6] = ((((word64)x5 << 32) | x4) >> 25) & 0x3ffffff;
out[7] = ((((word64)x6 << 32) | x5) >> 19) & 0x1ffffff;
out[8] = ((((word64)x7 << 32) | x6) >> 12) & 0x3ffffff;
out[9] = (( x7) >> 6) & 0x1ffffff;
out[9] = (( x7) >> 6) & 0x1ffffff;
out[10] = 0;
out[11] = 0;
}
@ -975,7 +972,7 @@ curve25519_expand(bignum25519 out, const unsigned char in[32]) {
* little-endian, 32-byte array
*/
void
curve25519_contract(unsigned char out[32], const bignum25519 in) {
curve25519_contract(byte out[32], const bignum25519 in) {
ALIGN(16) bignum25519 f;
curve25519_copy(f, in);
@ -1035,10 +1032,10 @@ curve25519_contract(unsigned char out[32], const bignum25519 in) {
f[9] <<= 6;
#define F(i, s) \
out[s+0] |= (unsigned char )(f[i] & 0xff); \
out[s+1] = (unsigned char )((f[i] >> 8) & 0xff); \
out[s+2] = (unsigned char )((f[i] >> 16) & 0xff); \
out[s+3] = (unsigned char )((f[i] >> 24) & 0xff);
out[s+0] |= (byte)(f[i] & 0xff); \
out[s+1] = (byte)((f[i] >> 8) & 0xff); \
out[s+2] = (byte)((f[i] >> 16) & 0xff); \
out[s+3] = (byte)((f[i] >> 24) & 0xff);
out[0] = 0;
out[16] = 0;
@ -1055,85 +1052,6 @@ curve25519_contract(unsigned char out[32], const bignum25519 in) {
#undef F
}
/* if (iswap) swap(a, b) */
inline void
curve25519_swap_conditional(bignum25519 a, bignum25519 b, word32 iswap) {
const word32 swap = (word32)(-(int32_t)iswap);
xmmi a0,a1,a2,b0,b1,b2,x0,x1,x2;
xmmi mask = _mm_cvtsi32_si128(swap);
mask = _mm_shuffle_epi32(mask, 0);
a0 = _mm_load_si128((xmmi *)a + 0);
a1 = _mm_load_si128((xmmi *)a + 1);
b0 = _mm_load_si128((xmmi *)b + 0);
b1 = _mm_load_si128((xmmi *)b + 1);
b0 = _mm_xor_si128(a0, b0);
b1 = _mm_xor_si128(a1, b1);
x0 = _mm_and_si128(b0, mask);
x1 = _mm_and_si128(b1, mask);
x0 = _mm_xor_si128(x0, a0);
x1 = _mm_xor_si128(x1, a1);
a0 = _mm_xor_si128(x0, b0);
a1 = _mm_xor_si128(x1, b1);
_mm_store_si128((xmmi *)a + 0, x0);
_mm_store_si128((xmmi *)a + 1, x1);
_mm_store_si128((xmmi *)b + 0, a0);
_mm_store_si128((xmmi *)b + 1, a1);
a2 = _mm_load_si128((xmmi *)a + 2);
b2 = _mm_load_si128((xmmi *)b + 2);
b2 = _mm_xor_si128(a2, b2);
x2 = _mm_and_si128(b2, mask);
x2 = _mm_xor_si128(x2, a2);
a2 = _mm_xor_si128(x2, b2);
_mm_store_si128((xmmi *)b + 2, a2);
_mm_store_si128((xmmi *)a + 2, x2);
}
/* out = (flag) ? out : in */
inline void
curve25519_move_conditional_bytes(byte out[96], const byte in[96], word32 flag) {
xmmi a0,a1,a2,a3,a4,a5,b0,b1,b2,b3,b4,b5;
const word32 nb = flag - 1;
xmmi masknb = _mm_shuffle_epi32(_mm_cvtsi32_si128(nb),0);
a0 = _mm_load_si128((xmmi *)in + 0);
a1 = _mm_load_si128((xmmi *)in + 1);
a2 = _mm_load_si128((xmmi *)in + 2);
b0 = _mm_load_si128((xmmi *)out + 0);
b1 = _mm_load_si128((xmmi *)out + 1);
b2 = _mm_load_si128((xmmi *)out + 2);
a0 = _mm_andnot_si128(masknb, a0);
a1 = _mm_andnot_si128(masknb, a1);
a2 = _mm_andnot_si128(masknb, a2);
b0 = _mm_and_si128(masknb, b0);
b1 = _mm_and_si128(masknb, b1);
b2 = _mm_and_si128(masknb, b2);
a0 = _mm_or_si128(a0, b0);
a1 = _mm_or_si128(a1, b1);
a2 = _mm_or_si128(a2, b2);
_mm_store_si128((xmmi*)out + 0, a0);
_mm_store_si128((xmmi*)out + 1, a1);
_mm_store_si128((xmmi*)out + 2, a2);
a3 = _mm_load_si128((xmmi *)in + 3);
a4 = _mm_load_si128((xmmi *)in + 4);
a5 = _mm_load_si128((xmmi *)in + 5);
b3 = _mm_load_si128((xmmi *)out + 3);
b4 = _mm_load_si128((xmmi *)out + 4);
b5 = _mm_load_si128((xmmi *)out + 5);
a3 = _mm_andnot_si128(masknb, a3);
a4 = _mm_andnot_si128(masknb, a4);
a5 = _mm_andnot_si128(masknb, a5);
b3 = _mm_and_si128(masknb, b3);
b4 = _mm_and_si128(masknb, b4);
b5 = _mm_and_si128(masknb, b5);
a3 = _mm_or_si128(a3, b3);
a4 = _mm_or_si128(a4, b4);
a5 = _mm_or_si128(a5, b5);
_mm_store_si128((xmmi*)out + 3, a3);
_mm_store_si128((xmmi*)out + 4, a4);
_mm_store_si128((xmmi*)out + 5, a5);
}
ANONYMOUS_NAMESPACE_END
NAMESPACE_BEGIN(CryptoPP)