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865 lines
26 KiB
865 lines
26 KiB
/* Copyright (c) 2014, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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// This implementation of poly1305 is by Andrew Moon
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// (https://github.com/floodyberry/poly1305-donna) and released as public
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// domain. It implements SIMD vectorization based on the algorithm described in
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// http://cr.yp.to/papers.html#neoncrypto. Unrolled to 2 powers, i.e. 64 byte
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// block size
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#include <GFp/poly1305.h>
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#include "internal.h"
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#include "../internal.h"
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#if defined(BORINGSSL_HAS_UINT128) && defined(OPENSSL_X86_64)
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#pragma GCC diagnostic ignored "-Wcast-align"
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#pragma GCC diagnostic ignored "-Wsign-conversion"
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#include <emmintrin.h>
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static uint32_t load_u32_le(const uint8_t in[4]) {
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uint32_t ret;
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GFp_memcpy(&ret, in, 4);
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return ret;
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}
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static uint64_t load_u64_le(const uint8_t in[8]) {
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uint64_t ret;
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GFp_memcpy(&ret, in, 8);
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return ret;
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}
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static void store_u64_le(uint8_t out[8], uint64_t v) {
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GFp_memcpy(out, &v, 8);
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}
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typedef __m128i xmmi;
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static const alignas(16) uint32_t poly1305_x64_sse2_message_mask[4] = {
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(1 << 26) - 1, 0, (1 << 26) - 1, 0};
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static const alignas(16) uint32_t poly1305_x64_sse2_5[4] = {5, 0, 5, 0};
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static const alignas(16) uint32_t poly1305_x64_sse2_1shl128[4] = {
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(1 << 24), 0, (1 << 24), 0};
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static inline uint128_t add128(uint128_t a, uint128_t b) { return a + b; }
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static inline uint128_t add128_64(uint128_t a, uint64_t b) { return a + b; }
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static inline uint128_t mul64x64_128(uint64_t a, uint64_t b) {
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return (uint128_t)a * b;
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}
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static inline uint64_t lo128(uint128_t a) { return (uint64_t)a; }
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static inline uint64_t shr128(uint128_t v, const int shift) {
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return (uint64_t)(v >> shift);
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}
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static inline uint64_t shr128_pair(uint64_t hi, uint64_t lo, const int shift) {
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return (uint64_t)((((uint128_t)hi << 64) | lo) >> shift);
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}
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typedef struct poly1305_power_t {
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union {
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xmmi v;
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uint64_t u[2];
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uint32_t d[4];
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} R20, R21, R22, R23, R24, S21, S22, S23, S24;
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} poly1305_power;
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typedef struct poly1305_state_internal_t {
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poly1305_power P[2]; /* 288 bytes, top 32 bit halves unused = 144
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bytes of free storage */
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union {
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xmmi H[5]; // 80 bytes
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uint64_t HH[10];
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};
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// uint64_t r0,r1,r2; [24 bytes]
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// uint64_t pad0,pad1; [16 bytes]
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uint64_t started; // 8 bytes
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uint64_t leftover; // 8 bytes
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uint8_t buffer[64]; // 64 bytes
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} poly1305_state_internal; /* 448 bytes total + 63 bytes for
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alignment = 511 bytes raw */
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OPENSSL_STATIC_ASSERT(sizeof(poly1305_state_internal) <= sizeof(poly1305_state),
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"poly1305_state isn't large enough to hold aligned poly1305_state_internal");
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static inline poly1305_state_internal *poly1305_aligned_state(
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poly1305_state *state) {
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dev_assert_secret(((uintptr_t)state & 63) == 0);
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return (poly1305_state_internal *)(((uint64_t)state + 63) & ~63);
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}
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static inline size_t poly1305_min(size_t a, size_t b) {
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return (a < b) ? a : b;
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}
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void GFp_poly1305_init(poly1305_state *state, const uint8_t key[32]) {
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poly1305_state_internal *st = poly1305_aligned_state(state);
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poly1305_power *p;
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uint64_t r0, r1, r2;
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uint64_t t0, t1;
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// clamp key
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t0 = load_u64_le(key + 0);
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t1 = load_u64_le(key + 8);
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r0 = t0 & 0xffc0fffffff;
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t0 >>= 44;
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t0 |= t1 << 20;
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r1 = t0 & 0xfffffc0ffff;
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t1 >>= 24;
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r2 = t1 & 0x00ffffffc0f;
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// store r in un-used space of st->P[1]
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p = &st->P[1];
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p->R20.d[1] = (uint32_t)(r0);
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p->R20.d[3] = (uint32_t)(r0 >> 32);
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p->R21.d[1] = (uint32_t)(r1);
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p->R21.d[3] = (uint32_t)(r1 >> 32);
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p->R22.d[1] = (uint32_t)(r2);
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p->R22.d[3] = (uint32_t)(r2 >> 32);
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// store pad
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p->R23.d[1] = load_u32_le(key + 16);
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p->R23.d[3] = load_u32_le(key + 20);
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p->R24.d[1] = load_u32_le(key + 24);
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p->R24.d[3] = load_u32_le(key + 28);
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// H = 0
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st->H[0] = _mm_setzero_si128();
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st->H[1] = _mm_setzero_si128();
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st->H[2] = _mm_setzero_si128();
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st->H[3] = _mm_setzero_si128();
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st->H[4] = _mm_setzero_si128();
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st->started = 0;
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st->leftover = 0;
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}
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static void poly1305_first_block(poly1305_state_internal *st,
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const uint8_t *m) {
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const xmmi MMASK = _mm_load_si128((const xmmi *)poly1305_x64_sse2_message_mask);
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const xmmi FIVE = _mm_load_si128((const xmmi *)poly1305_x64_sse2_5);
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const xmmi HIBIT = _mm_load_si128((const xmmi *)poly1305_x64_sse2_1shl128);
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xmmi T5, T6;
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poly1305_power *p;
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uint128_t d[3];
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uint64_t r0, r1, r2;
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uint64_t r20, r21, r22, s22;
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uint64_t pad0, pad1;
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uint64_t c;
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uint64_t i;
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// pull out stored info
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p = &st->P[1];
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r0 = ((uint64_t)p->R20.d[3] << 32) | (uint64_t)p->R20.d[1];
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r1 = ((uint64_t)p->R21.d[3] << 32) | (uint64_t)p->R21.d[1];
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r2 = ((uint64_t)p->R22.d[3] << 32) | (uint64_t)p->R22.d[1];
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pad0 = ((uint64_t)p->R23.d[3] << 32) | (uint64_t)p->R23.d[1];
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pad1 = ((uint64_t)p->R24.d[3] << 32) | (uint64_t)p->R24.d[1];
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// compute powers r^2,r^4
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r20 = r0;
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r21 = r1;
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r22 = r2;
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for (i = 0; i < 2; i++) {
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s22 = r22 * (5 << 2);
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d[0] = add128(mul64x64_128(r20, r20), mul64x64_128(r21 * 2, s22));
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d[1] = add128(mul64x64_128(r22, s22), mul64x64_128(r20 * 2, r21));
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d[2] = add128(mul64x64_128(r21, r21), mul64x64_128(r22 * 2, r20));
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r20 = lo128(d[0]) & 0xfffffffffff;
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c = shr128(d[0], 44);
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d[1] = add128_64(d[1], c);
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r21 = lo128(d[1]) & 0xfffffffffff;
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c = shr128(d[1], 44);
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d[2] = add128_64(d[2], c);
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r22 = lo128(d[2]) & 0x3ffffffffff;
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c = shr128(d[2], 42);
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r20 += c * 5;
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c = (r20 >> 44);
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r20 = r20 & 0xfffffffffff;
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r21 += c;
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p->R20.v = _mm_shuffle_epi32(_mm_cvtsi32_si128((uint32_t)(r20)&0x3ffffff),
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_MM_SHUFFLE(1, 0, 1, 0));
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p->R21.v = _mm_shuffle_epi32(
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_mm_cvtsi32_si128((uint32_t)((r20 >> 26) | (r21 << 18)) & 0x3ffffff),
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_MM_SHUFFLE(1, 0, 1, 0));
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p->R22.v =
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_mm_shuffle_epi32(_mm_cvtsi32_si128((uint32_t)((r21 >> 8)) & 0x3ffffff),
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_MM_SHUFFLE(1, 0, 1, 0));
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p->R23.v = _mm_shuffle_epi32(
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_mm_cvtsi32_si128((uint32_t)((r21 >> 34) | (r22 << 10)) & 0x3ffffff),
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_MM_SHUFFLE(1, 0, 1, 0));
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p->R24.v = _mm_shuffle_epi32(_mm_cvtsi32_si128((uint32_t)((r22 >> 16))),
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_MM_SHUFFLE(1, 0, 1, 0));
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p->S21.v = _mm_mul_epu32(p->R21.v, FIVE);
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p->S22.v = _mm_mul_epu32(p->R22.v, FIVE);
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p->S23.v = _mm_mul_epu32(p->R23.v, FIVE);
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p->S24.v = _mm_mul_epu32(p->R24.v, FIVE);
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p--;
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}
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// put saved info back
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p = &st->P[1];
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p->R20.d[1] = (uint32_t)(r0);
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p->R20.d[3] = (uint32_t)(r0 >> 32);
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p->R21.d[1] = (uint32_t)(r1);
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p->R21.d[3] = (uint32_t)(r1 >> 32);
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p->R22.d[1] = (uint32_t)(r2);
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p->R22.d[3] = (uint32_t)(r2 >> 32);
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p->R23.d[1] = (uint32_t)(pad0);
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p->R23.d[3] = (uint32_t)(pad0 >> 32);
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p->R24.d[1] = (uint32_t)(pad1);
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p->R24.d[3] = (uint32_t)(pad1 >> 32);
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// H = [Mx,My]
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T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 0)),
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_mm_loadl_epi64((const xmmi *)(m + 16)));
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T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 8)),
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_mm_loadl_epi64((const xmmi *)(m + 24)));
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st->H[0] = _mm_and_si128(MMASK, T5);
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st->H[1] = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
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T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
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st->H[2] = _mm_and_si128(MMASK, T5);
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st->H[3] = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
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st->H[4] = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
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}
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static void poly1305_blocks(poly1305_state_internal *st, const uint8_t *m,
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size_t bytes) {
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const xmmi MMASK = _mm_load_si128((const xmmi *)poly1305_x64_sse2_message_mask);
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const xmmi FIVE = _mm_load_si128((const xmmi *)poly1305_x64_sse2_5);
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const xmmi HIBIT = _mm_load_si128((const xmmi *)poly1305_x64_sse2_1shl128);
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poly1305_power *p;
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xmmi H0, H1, H2, H3, H4;
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xmmi T0, T1, T2, T3, T4, T5, T6;
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xmmi M0, M1, M2, M3, M4;
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xmmi C1, C2;
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H0 = st->H[0];
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H1 = st->H[1];
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H2 = st->H[2];
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H3 = st->H[3];
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H4 = st->H[4];
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while (bytes >= 64) {
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// H *= [r^4,r^4]
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p = &st->P[0];
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T0 = _mm_mul_epu32(H0, p->R20.v);
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T1 = _mm_mul_epu32(H0, p->R21.v);
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T2 = _mm_mul_epu32(H0, p->R22.v);
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T3 = _mm_mul_epu32(H0, p->R23.v);
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T4 = _mm_mul_epu32(H0, p->R24.v);
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T5 = _mm_mul_epu32(H1, p->S24.v);
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T6 = _mm_mul_epu32(H1, p->R20.v);
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T0 = _mm_add_epi64(T0, T5);
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T1 = _mm_add_epi64(T1, T6);
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T5 = _mm_mul_epu32(H2, p->S23.v);
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T6 = _mm_mul_epu32(H2, p->S24.v);
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T0 = _mm_add_epi64(T0, T5);
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T1 = _mm_add_epi64(T1, T6);
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T5 = _mm_mul_epu32(H3, p->S22.v);
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T6 = _mm_mul_epu32(H3, p->S23.v);
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T0 = _mm_add_epi64(T0, T5);
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T1 = _mm_add_epi64(T1, T6);
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T5 = _mm_mul_epu32(H4, p->S21.v);
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T6 = _mm_mul_epu32(H4, p->S22.v);
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T0 = _mm_add_epi64(T0, T5);
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T1 = _mm_add_epi64(T1, T6);
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T5 = _mm_mul_epu32(H1, p->R21.v);
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T6 = _mm_mul_epu32(H1, p->R22.v);
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T2 = _mm_add_epi64(T2, T5);
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T3 = _mm_add_epi64(T3, T6);
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T5 = _mm_mul_epu32(H2, p->R20.v);
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T6 = _mm_mul_epu32(H2, p->R21.v);
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T2 = _mm_add_epi64(T2, T5);
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T3 = _mm_add_epi64(T3, T6);
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T5 = _mm_mul_epu32(H3, p->S24.v);
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T6 = _mm_mul_epu32(H3, p->R20.v);
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T2 = _mm_add_epi64(T2, T5);
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T3 = _mm_add_epi64(T3, T6);
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T5 = _mm_mul_epu32(H4, p->S23.v);
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T6 = _mm_mul_epu32(H4, p->S24.v);
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T2 = _mm_add_epi64(T2, T5);
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T3 = _mm_add_epi64(T3, T6);
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T5 = _mm_mul_epu32(H1, p->R23.v);
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T4 = _mm_add_epi64(T4, T5);
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T5 = _mm_mul_epu32(H2, p->R22.v);
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T4 = _mm_add_epi64(T4, T5);
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T5 = _mm_mul_epu32(H3, p->R21.v);
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T4 = _mm_add_epi64(T4, T5);
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T5 = _mm_mul_epu32(H4, p->R20.v);
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T4 = _mm_add_epi64(T4, T5);
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// H += [Mx,My]*[r^2,r^2]
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T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 0)),
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_mm_loadl_epi64((const xmmi *)(m + 16)));
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T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 8)),
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_mm_loadl_epi64((const xmmi *)(m + 24)));
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M0 = _mm_and_si128(MMASK, T5);
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M1 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
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T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
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M2 = _mm_and_si128(MMASK, T5);
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M3 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
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M4 = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
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p = &st->P[1];
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T5 = _mm_mul_epu32(M0, p->R20.v);
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T6 = _mm_mul_epu32(M0, p->R21.v);
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T0 = _mm_add_epi64(T0, T5);
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T1 = _mm_add_epi64(T1, T6);
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T5 = _mm_mul_epu32(M1, p->S24.v);
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T6 = _mm_mul_epu32(M1, p->R20.v);
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T0 = _mm_add_epi64(T0, T5);
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T1 = _mm_add_epi64(T1, T6);
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T5 = _mm_mul_epu32(M2, p->S23.v);
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T6 = _mm_mul_epu32(M2, p->S24.v);
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T0 = _mm_add_epi64(T0, T5);
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T1 = _mm_add_epi64(T1, T6);
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T5 = _mm_mul_epu32(M3, p->S22.v);
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T6 = _mm_mul_epu32(M3, p->S23.v);
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T0 = _mm_add_epi64(T0, T5);
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T1 = _mm_add_epi64(T1, T6);
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T5 = _mm_mul_epu32(M4, p->S21.v);
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T6 = _mm_mul_epu32(M4, p->S22.v);
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T0 = _mm_add_epi64(T0, T5);
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T1 = _mm_add_epi64(T1, T6);
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T5 = _mm_mul_epu32(M0, p->R22.v);
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T6 = _mm_mul_epu32(M0, p->R23.v);
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T2 = _mm_add_epi64(T2, T5);
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T3 = _mm_add_epi64(T3, T6);
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T5 = _mm_mul_epu32(M1, p->R21.v);
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T6 = _mm_mul_epu32(M1, p->R22.v);
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T2 = _mm_add_epi64(T2, T5);
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T3 = _mm_add_epi64(T3, T6);
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T5 = _mm_mul_epu32(M2, p->R20.v);
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T6 = _mm_mul_epu32(M2, p->R21.v);
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T2 = _mm_add_epi64(T2, T5);
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T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(M3, p->S24.v);
|
|
T6 = _mm_mul_epu32(M3, p->R20.v);
|
|
T2 = _mm_add_epi64(T2, T5);
|
|
T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(M4, p->S23.v);
|
|
T6 = _mm_mul_epu32(M4, p->S24.v);
|
|
T2 = _mm_add_epi64(T2, T5);
|
|
T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(M0, p->R24.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
T5 = _mm_mul_epu32(M1, p->R23.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
T5 = _mm_mul_epu32(M2, p->R22.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
T5 = _mm_mul_epu32(M3, p->R21.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
T5 = _mm_mul_epu32(M4, p->R20.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
|
|
// H += [Mx,My]
|
|
T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 32)),
|
|
_mm_loadl_epi64((const xmmi *)(m + 48)));
|
|
T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 40)),
|
|
_mm_loadl_epi64((const xmmi *)(m + 56)));
|
|
M0 = _mm_and_si128(MMASK, T5);
|
|
M1 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
|
|
T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
|
|
M2 = _mm_and_si128(MMASK, T5);
|
|
M3 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
|
|
M4 = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
|
|
|
|
T0 = _mm_add_epi64(T0, M0);
|
|
T1 = _mm_add_epi64(T1, M1);
|
|
T2 = _mm_add_epi64(T2, M2);
|
|
T3 = _mm_add_epi64(T3, M3);
|
|
T4 = _mm_add_epi64(T4, M4);
|
|
|
|
// reduce
|
|
C1 = _mm_srli_epi64(T0, 26);
|
|
C2 = _mm_srli_epi64(T3, 26);
|
|
T0 = _mm_and_si128(T0, MMASK);
|
|
T3 = _mm_and_si128(T3, MMASK);
|
|
T1 = _mm_add_epi64(T1, C1);
|
|
T4 = _mm_add_epi64(T4, C2);
|
|
C1 = _mm_srli_epi64(T1, 26);
|
|
C2 = _mm_srli_epi64(T4, 26);
|
|
T1 = _mm_and_si128(T1, MMASK);
|
|
T4 = _mm_and_si128(T4, MMASK);
|
|
T2 = _mm_add_epi64(T2, C1);
|
|
T0 = _mm_add_epi64(T0, _mm_mul_epu32(C2, FIVE));
|
|
C1 = _mm_srli_epi64(T2, 26);
|
|
C2 = _mm_srli_epi64(T0, 26);
|
|
T2 = _mm_and_si128(T2, MMASK);
|
|
T0 = _mm_and_si128(T0, MMASK);
|
|
T3 = _mm_add_epi64(T3, C1);
|
|
T1 = _mm_add_epi64(T1, C2);
|
|
C1 = _mm_srli_epi64(T3, 26);
|
|
T3 = _mm_and_si128(T3, MMASK);
|
|
T4 = _mm_add_epi64(T4, C1);
|
|
|
|
// H = (H*[r^4,r^4] + [Mx,My]*[r^2,r^2] + [Mx,My])
|
|
H0 = T0;
|
|
H1 = T1;
|
|
H2 = T2;
|
|
H3 = T3;
|
|
H4 = T4;
|
|
|
|
m += 64;
|
|
bytes -= 64;
|
|
}
|
|
|
|
st->H[0] = H0;
|
|
st->H[1] = H1;
|
|
st->H[2] = H2;
|
|
st->H[3] = H3;
|
|
st->H[4] = H4;
|
|
}
|
|
|
|
static size_t poly1305_combine(poly1305_state_internal *st, const uint8_t *m,
|
|
size_t bytes) {
|
|
const xmmi MMASK = _mm_load_si128((const xmmi *)poly1305_x64_sse2_message_mask);
|
|
const xmmi HIBIT = _mm_load_si128((const xmmi *)poly1305_x64_sse2_1shl128);
|
|
const xmmi FIVE = _mm_load_si128((const xmmi *)poly1305_x64_sse2_5);
|
|
|
|
poly1305_power *p;
|
|
xmmi H0, H1, H2, H3, H4;
|
|
xmmi M0, M1, M2, M3, M4;
|
|
xmmi T0, T1, T2, T3, T4, T5, T6;
|
|
xmmi C1, C2;
|
|
|
|
uint64_t r0, r1, r2;
|
|
uint64_t t0, t1, t2, t3, t4;
|
|
uint64_t c;
|
|
size_t consumed = 0;
|
|
|
|
H0 = st->H[0];
|
|
H1 = st->H[1];
|
|
H2 = st->H[2];
|
|
H3 = st->H[3];
|
|
H4 = st->H[4];
|
|
|
|
// p = [r^2,r^2]
|
|
p = &st->P[1];
|
|
|
|
if (bytes >= 32) {
|
|
// H *= [r^2,r^2]
|
|
T0 = _mm_mul_epu32(H0, p->R20.v);
|
|
T1 = _mm_mul_epu32(H0, p->R21.v);
|
|
T2 = _mm_mul_epu32(H0, p->R22.v);
|
|
T3 = _mm_mul_epu32(H0, p->R23.v);
|
|
T4 = _mm_mul_epu32(H0, p->R24.v);
|
|
T5 = _mm_mul_epu32(H1, p->S24.v);
|
|
T6 = _mm_mul_epu32(H1, p->R20.v);
|
|
T0 = _mm_add_epi64(T0, T5);
|
|
T1 = _mm_add_epi64(T1, T6);
|
|
T5 = _mm_mul_epu32(H2, p->S23.v);
|
|
T6 = _mm_mul_epu32(H2, p->S24.v);
|
|
T0 = _mm_add_epi64(T0, T5);
|
|
T1 = _mm_add_epi64(T1, T6);
|
|
T5 = _mm_mul_epu32(H3, p->S22.v);
|
|
T6 = _mm_mul_epu32(H3, p->S23.v);
|
|
T0 = _mm_add_epi64(T0, T5);
|
|
T1 = _mm_add_epi64(T1, T6);
|
|
T5 = _mm_mul_epu32(H4, p->S21.v);
|
|
T6 = _mm_mul_epu32(H4, p->S22.v);
|
|
T0 = _mm_add_epi64(T0, T5);
|
|
T1 = _mm_add_epi64(T1, T6);
|
|
T5 = _mm_mul_epu32(H1, p->R21.v);
|
|
T6 = _mm_mul_epu32(H1, p->R22.v);
|
|
T2 = _mm_add_epi64(T2, T5);
|
|
T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(H2, p->R20.v);
|
|
T6 = _mm_mul_epu32(H2, p->R21.v);
|
|
T2 = _mm_add_epi64(T2, T5);
|
|
T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(H3, p->S24.v);
|
|
T6 = _mm_mul_epu32(H3, p->R20.v);
|
|
T2 = _mm_add_epi64(T2, T5);
|
|
T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(H4, p->S23.v);
|
|
T6 = _mm_mul_epu32(H4, p->S24.v);
|
|
T2 = _mm_add_epi64(T2, T5);
|
|
T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(H1, p->R23.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
T5 = _mm_mul_epu32(H2, p->R22.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
T5 = _mm_mul_epu32(H3, p->R21.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
T5 = _mm_mul_epu32(H4, p->R20.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
|
|
// H += [Mx,My]
|
|
T5 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 0)),
|
|
_mm_loadl_epi64((const xmmi *)(m + 16)));
|
|
T6 = _mm_unpacklo_epi64(_mm_loadl_epi64((const xmmi *)(m + 8)),
|
|
_mm_loadl_epi64((const xmmi *)(m + 24)));
|
|
M0 = _mm_and_si128(MMASK, T5);
|
|
M1 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
|
|
T5 = _mm_or_si128(_mm_srli_epi64(T5, 52), _mm_slli_epi64(T6, 12));
|
|
M2 = _mm_and_si128(MMASK, T5);
|
|
M3 = _mm_and_si128(MMASK, _mm_srli_epi64(T5, 26));
|
|
M4 = _mm_or_si128(_mm_srli_epi64(T6, 40), HIBIT);
|
|
|
|
T0 = _mm_add_epi64(T0, M0);
|
|
T1 = _mm_add_epi64(T1, M1);
|
|
T2 = _mm_add_epi64(T2, M2);
|
|
T3 = _mm_add_epi64(T3, M3);
|
|
T4 = _mm_add_epi64(T4, M4);
|
|
|
|
// reduce
|
|
C1 = _mm_srli_epi64(T0, 26);
|
|
C2 = _mm_srli_epi64(T3, 26);
|
|
T0 = _mm_and_si128(T0, MMASK);
|
|
T3 = _mm_and_si128(T3, MMASK);
|
|
T1 = _mm_add_epi64(T1, C1);
|
|
T4 = _mm_add_epi64(T4, C2);
|
|
C1 = _mm_srli_epi64(T1, 26);
|
|
C2 = _mm_srli_epi64(T4, 26);
|
|
T1 = _mm_and_si128(T1, MMASK);
|
|
T4 = _mm_and_si128(T4, MMASK);
|
|
T2 = _mm_add_epi64(T2, C1);
|
|
T0 = _mm_add_epi64(T0, _mm_mul_epu32(C2, FIVE));
|
|
C1 = _mm_srli_epi64(T2, 26);
|
|
C2 = _mm_srli_epi64(T0, 26);
|
|
T2 = _mm_and_si128(T2, MMASK);
|
|
T0 = _mm_and_si128(T0, MMASK);
|
|
T3 = _mm_add_epi64(T3, C1);
|
|
T1 = _mm_add_epi64(T1, C2);
|
|
C1 = _mm_srli_epi64(T3, 26);
|
|
T3 = _mm_and_si128(T3, MMASK);
|
|
T4 = _mm_add_epi64(T4, C1);
|
|
|
|
// H = (H*[r^2,r^2] + [Mx,My])
|
|
H0 = T0;
|
|
H1 = T1;
|
|
H2 = T2;
|
|
H3 = T3;
|
|
H4 = T4;
|
|
|
|
consumed = 32;
|
|
}
|
|
|
|
// finalize, H *= [r^2,r]
|
|
r0 = ((uint64_t)p->R20.d[3] << 32) | (uint64_t)p->R20.d[1];
|
|
r1 = ((uint64_t)p->R21.d[3] << 32) | (uint64_t)p->R21.d[1];
|
|
r2 = ((uint64_t)p->R22.d[3] << 32) | (uint64_t)p->R22.d[1];
|
|
|
|
p->R20.d[2] = (uint32_t)(r0)&0x3ffffff;
|
|
p->R21.d[2] = (uint32_t)((r0 >> 26) | (r1 << 18)) & 0x3ffffff;
|
|
p->R22.d[2] = (uint32_t)((r1 >> 8)) & 0x3ffffff;
|
|
p->R23.d[2] = (uint32_t)((r1 >> 34) | (r2 << 10)) & 0x3ffffff;
|
|
p->R24.d[2] = (uint32_t)((r2 >> 16));
|
|
p->S21.d[2] = p->R21.d[2] * 5;
|
|
p->S22.d[2] = p->R22.d[2] * 5;
|
|
p->S23.d[2] = p->R23.d[2] * 5;
|
|
p->S24.d[2] = p->R24.d[2] * 5;
|
|
|
|
// H *= [r^2,r]
|
|
T0 = _mm_mul_epu32(H0, p->R20.v);
|
|
T1 = _mm_mul_epu32(H0, p->R21.v);
|
|
T2 = _mm_mul_epu32(H0, p->R22.v);
|
|
T3 = _mm_mul_epu32(H0, p->R23.v);
|
|
T4 = _mm_mul_epu32(H0, p->R24.v);
|
|
T5 = _mm_mul_epu32(H1, p->S24.v);
|
|
T6 = _mm_mul_epu32(H1, p->R20.v);
|
|
T0 = _mm_add_epi64(T0, T5);
|
|
T1 = _mm_add_epi64(T1, T6);
|
|
T5 = _mm_mul_epu32(H2, p->S23.v);
|
|
T6 = _mm_mul_epu32(H2, p->S24.v);
|
|
T0 = _mm_add_epi64(T0, T5);
|
|
T1 = _mm_add_epi64(T1, T6);
|
|
T5 = _mm_mul_epu32(H3, p->S22.v);
|
|
T6 = _mm_mul_epu32(H3, p->S23.v);
|
|
T0 = _mm_add_epi64(T0, T5);
|
|
T1 = _mm_add_epi64(T1, T6);
|
|
T5 = _mm_mul_epu32(H4, p->S21.v);
|
|
T6 = _mm_mul_epu32(H4, p->S22.v);
|
|
T0 = _mm_add_epi64(T0, T5);
|
|
T1 = _mm_add_epi64(T1, T6);
|
|
T5 = _mm_mul_epu32(H1, p->R21.v);
|
|
T6 = _mm_mul_epu32(H1, p->R22.v);
|
|
T2 = _mm_add_epi64(T2, T5);
|
|
T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(H2, p->R20.v);
|
|
T6 = _mm_mul_epu32(H2, p->R21.v);
|
|
T2 = _mm_add_epi64(T2, T5);
|
|
T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(H3, p->S24.v);
|
|
T6 = _mm_mul_epu32(H3, p->R20.v);
|
|
T2 = _mm_add_epi64(T2, T5);
|
|
T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(H4, p->S23.v);
|
|
T6 = _mm_mul_epu32(H4, p->S24.v);
|
|
T2 = _mm_add_epi64(T2, T5);
|
|
T3 = _mm_add_epi64(T3, T6);
|
|
T5 = _mm_mul_epu32(H1, p->R23.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
T5 = _mm_mul_epu32(H2, p->R22.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
T5 = _mm_mul_epu32(H3, p->R21.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
T5 = _mm_mul_epu32(H4, p->R20.v);
|
|
T4 = _mm_add_epi64(T4, T5);
|
|
|
|
C1 = _mm_srli_epi64(T0, 26);
|
|
C2 = _mm_srli_epi64(T3, 26);
|
|
T0 = _mm_and_si128(T0, MMASK);
|
|
T3 = _mm_and_si128(T3, MMASK);
|
|
T1 = _mm_add_epi64(T1, C1);
|
|
T4 = _mm_add_epi64(T4, C2);
|
|
C1 = _mm_srli_epi64(T1, 26);
|
|
C2 = _mm_srli_epi64(T4, 26);
|
|
T1 = _mm_and_si128(T1, MMASK);
|
|
T4 = _mm_and_si128(T4, MMASK);
|
|
T2 = _mm_add_epi64(T2, C1);
|
|
T0 = _mm_add_epi64(T0, _mm_mul_epu32(C2, FIVE));
|
|
C1 = _mm_srli_epi64(T2, 26);
|
|
C2 = _mm_srli_epi64(T0, 26);
|
|
T2 = _mm_and_si128(T2, MMASK);
|
|
T0 = _mm_and_si128(T0, MMASK);
|
|
T3 = _mm_add_epi64(T3, C1);
|
|
T1 = _mm_add_epi64(T1, C2);
|
|
C1 = _mm_srli_epi64(T3, 26);
|
|
T3 = _mm_and_si128(T3, MMASK);
|
|
T4 = _mm_add_epi64(T4, C1);
|
|
|
|
// H = H[0]+H[1]
|
|
H0 = _mm_add_epi64(T0, _mm_srli_si128(T0, 8));
|
|
H1 = _mm_add_epi64(T1, _mm_srli_si128(T1, 8));
|
|
H2 = _mm_add_epi64(T2, _mm_srli_si128(T2, 8));
|
|
H3 = _mm_add_epi64(T3, _mm_srli_si128(T3, 8));
|
|
H4 = _mm_add_epi64(T4, _mm_srli_si128(T4, 8));
|
|
|
|
t0 = _mm_cvtsi128_si32(H0);
|
|
c = (t0 >> 26);
|
|
t0 &= 0x3ffffff;
|
|
t1 = _mm_cvtsi128_si32(H1) + c;
|
|
c = (t1 >> 26);
|
|
t1 &= 0x3ffffff;
|
|
t2 = _mm_cvtsi128_si32(H2) + c;
|
|
c = (t2 >> 26);
|
|
t2 &= 0x3ffffff;
|
|
t3 = _mm_cvtsi128_si32(H3) + c;
|
|
c = (t3 >> 26);
|
|
t3 &= 0x3ffffff;
|
|
t4 = _mm_cvtsi128_si32(H4) + c;
|
|
c = (t4 >> 26);
|
|
t4 &= 0x3ffffff;
|
|
t0 = t0 + (c * 5);
|
|
c = (t0 >> 26);
|
|
t0 &= 0x3ffffff;
|
|
t1 = t1 + c;
|
|
|
|
st->HH[0] = ((t0) | (t1 << 26)) & UINT64_C(0xfffffffffff);
|
|
st->HH[1] = ((t1 >> 18) | (t2 << 8) | (t3 << 34)) & UINT64_C(0xfffffffffff);
|
|
st->HH[2] = ((t3 >> 10) | (t4 << 16)) & UINT64_C(0x3ffffffffff);
|
|
|
|
return consumed;
|
|
}
|
|
|
|
void GFp_poly1305_update(poly1305_state *state, const uint8_t *m,
|
|
size_t bytes) {
|
|
poly1305_state_internal *st = poly1305_aligned_state(state);
|
|
size_t want;
|
|
|
|
// Work around a C language bug. See https://crbug.com/1019588.
|
|
if (bytes == 0) {
|
|
return;
|
|
}
|
|
|
|
// need at least 32 initial bytes to start the accelerated branch
|
|
if (!st->started) {
|
|
if ((st->leftover == 0) && (bytes > 32)) {
|
|
poly1305_first_block(st, m);
|
|
m += 32;
|
|
bytes -= 32;
|
|
} else {
|
|
want = poly1305_min(32 - st->leftover, bytes);
|
|
GFp_memcpy(st->buffer + st->leftover, m, want);
|
|
bytes -= want;
|
|
m += want;
|
|
st->leftover += want;
|
|
if ((st->leftover < 32) || (bytes == 0)) {
|
|
return;
|
|
}
|
|
poly1305_first_block(st, st->buffer);
|
|
st->leftover = 0;
|
|
}
|
|
st->started = 1;
|
|
}
|
|
|
|
// handle leftover
|
|
if (st->leftover) {
|
|
want = poly1305_min(64 - st->leftover, bytes);
|
|
GFp_memcpy(st->buffer + st->leftover, m, want);
|
|
bytes -= want;
|
|
m += want;
|
|
st->leftover += want;
|
|
if (st->leftover < 64) {
|
|
return;
|
|
}
|
|
poly1305_blocks(st, st->buffer, 64);
|
|
st->leftover = 0;
|
|
}
|
|
|
|
// process 64 byte blocks
|
|
if (bytes >= 64) {
|
|
want = (bytes & ~63);
|
|
poly1305_blocks(st, m, want);
|
|
m += want;
|
|
bytes -= want;
|
|
}
|
|
|
|
if (bytes) {
|
|
GFp_memcpy(st->buffer + st->leftover, m, bytes);
|
|
st->leftover += bytes;
|
|
}
|
|
}
|
|
|
|
void GFp_poly1305_finish(poly1305_state *state, uint8_t mac[16]) {
|
|
poly1305_state_internal *st = poly1305_aligned_state(state);
|
|
size_t leftover = st->leftover;
|
|
uint8_t *m = st->buffer;
|
|
uint128_t d[3];
|
|
uint64_t h0, h1, h2;
|
|
uint64_t t0, t1;
|
|
uint64_t g0, g1, g2, c, nc;
|
|
uint64_t r0, r1, r2, s1, s2;
|
|
poly1305_power *p;
|
|
|
|
if (st->started) {
|
|
size_t consumed = poly1305_combine(st, m, leftover);
|
|
leftover -= consumed;
|
|
m += consumed;
|
|
}
|
|
|
|
// st->HH will either be 0 or have the combined result
|
|
h0 = st->HH[0];
|
|
h1 = st->HH[1];
|
|
h2 = st->HH[2];
|
|
|
|
p = &st->P[1];
|
|
r0 = ((uint64_t)p->R20.d[3] << 32) | (uint64_t)p->R20.d[1];
|
|
r1 = ((uint64_t)p->R21.d[3] << 32) | (uint64_t)p->R21.d[1];
|
|
r2 = ((uint64_t)p->R22.d[3] << 32) | (uint64_t)p->R22.d[1];
|
|
s1 = r1 * (5 << 2);
|
|
s2 = r2 * (5 << 2);
|
|
|
|
if (leftover < 16) {
|
|
goto poly1305_donna_atmost15bytes;
|
|
}
|
|
|
|
poly1305_donna_atleast16bytes:
|
|
t0 = load_u64_le(m + 0);
|
|
t1 = load_u64_le(m + 8);
|
|
h0 += t0 & 0xfffffffffff;
|
|
t0 = shr128_pair(t1, t0, 44);
|
|
h1 += t0 & 0xfffffffffff;
|
|
h2 += (t1 >> 24) | ((uint64_t)1 << 40);
|
|
|
|
poly1305_donna_mul:
|
|
d[0] = add128(add128(mul64x64_128(h0, r0), mul64x64_128(h1, s2)),
|
|
mul64x64_128(h2, s1));
|
|
d[1] = add128(add128(mul64x64_128(h0, r1), mul64x64_128(h1, r0)),
|
|
mul64x64_128(h2, s2));
|
|
d[2] = add128(add128(mul64x64_128(h0, r2), mul64x64_128(h1, r1)),
|
|
mul64x64_128(h2, r0));
|
|
h0 = lo128(d[0]) & 0xfffffffffff;
|
|
c = shr128(d[0], 44);
|
|
d[1] = add128_64(d[1], c);
|
|
h1 = lo128(d[1]) & 0xfffffffffff;
|
|
c = shr128(d[1], 44);
|
|
d[2] = add128_64(d[2], c);
|
|
h2 = lo128(d[2]) & 0x3ffffffffff;
|
|
c = shr128(d[2], 42);
|
|
h0 += c * 5;
|
|
|
|
m += 16;
|
|
leftover -= 16;
|
|
if (leftover >= 16) {
|
|
goto poly1305_donna_atleast16bytes;
|
|
}
|
|
|
|
// final bytes
|
|
poly1305_donna_atmost15bytes:
|
|
if (!leftover) {
|
|
goto poly1305_donna_finish;
|
|
}
|
|
|
|
m[leftover++] = 1;
|
|
GFp_memset(m + leftover, 0, 16 - leftover);
|
|
leftover = 16;
|
|
|
|
t0 = load_u64_le(m + 0);
|
|
t1 = load_u64_le(m + 8);
|
|
h0 += t0 & 0xfffffffffff;
|
|
t0 = shr128_pair(t1, t0, 44);
|
|
h1 += t0 & 0xfffffffffff;
|
|
h2 += (t1 >> 24);
|
|
|
|
goto poly1305_donna_mul;
|
|
|
|
poly1305_donna_finish:
|
|
c = (h0 >> 44);
|
|
h0 &= 0xfffffffffff;
|
|
h1 += c;
|
|
c = (h1 >> 44);
|
|
h1 &= 0xfffffffffff;
|
|
h2 += c;
|
|
c = (h2 >> 42);
|
|
h2 &= 0x3ffffffffff;
|
|
h0 += c * 5;
|
|
|
|
g0 = h0 + 5;
|
|
c = (g0 >> 44);
|
|
g0 &= 0xfffffffffff;
|
|
g1 = h1 + c;
|
|
c = (g1 >> 44);
|
|
g1 &= 0xfffffffffff;
|
|
g2 = h2 + c - ((uint64_t)1 << 42);
|
|
|
|
c = (g2 >> 63) - 1;
|
|
nc = ~c;
|
|
h0 = (h0 & nc) | (g0 & c);
|
|
h1 = (h1 & nc) | (g1 & c);
|
|
h2 = (h2 & nc) | (g2 & c);
|
|
|
|
// pad
|
|
t0 = ((uint64_t)p->R23.d[3] << 32) | (uint64_t)p->R23.d[1];
|
|
t1 = ((uint64_t)p->R24.d[3] << 32) | (uint64_t)p->R24.d[1];
|
|
h0 += (t0 & 0xfffffffffff);
|
|
c = (h0 >> 44);
|
|
h0 &= 0xfffffffffff;
|
|
t0 = shr128_pair(t1, t0, 44);
|
|
h1 += (t0 & 0xfffffffffff) + c;
|
|
c = (h1 >> 44);
|
|
h1 &= 0xfffffffffff;
|
|
t1 = (t1 >> 24);
|
|
h2 += (t1)+c;
|
|
|
|
store_u64_le(mac + 0, ((h0) | (h1 << 44)));
|
|
store_u64_le(mac + 8, ((h1 >> 20) | (h2 << 24)));
|
|
}
|
|
|
|
#endif // BORINGSSL_HAS_UINT128 && OPENSSL_X86_64
|