mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-10 15:16:34 +00:00
1192 lines
53 KiB
C++
1192 lines
53 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <vapours.hpp>
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#include "crypto_update_impl.hpp"
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#ifdef ATMOSPHERE_IS_STRATOSPHERE
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#include <arm_neon.h>
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namespace ams::crypto::impl {
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/* Variable management macros. */
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#define DECLARE_ROUND_KEY_VAR(n) \
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const uint8x16_t round_key_##n = vld1q_u8(keys + (BlockSize * n))
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#define AES_ENC_DEC_OUTPUT_THREE_BLOCKS() \
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[tmp0]"+w"(tmp0), [tmp1]"+w"(tmp1), [tmp2]"+w"(tmp2)
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#define AES_ENC_DEC_OUTPUT_THREE_TWEAKS() \
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[tweak0]"+w"(tweak0), [tweak1]"+w"(tweak1), [tweak2]"+w"(tweak2)
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#define AES_ENC_DEC_OUTPUT_ONE_BLOCK() \
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[tmp0]"+w"(tmp0)
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#define AES_ENC_DEC_OUTPUT_ONE_TWEAK() \
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[tweak0]"+w"(tweak0)
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#define XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK() \
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[high]"=&r"(high), [low]"=&r"(low), [mask]"=&r"(mask)
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#define XTS_INCREMENT_INPUT_XOR() \
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[xorv]"r"(xorv)
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#define AES_ENC_DEC_INPUT_ROUND_KEY(n) \
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[round_key_##n]"w"(round_key_##n)
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/* AES Encryption macros. */
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#define AES_ENC_ROUND(n, i) \
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"aese %[tmp" #i "].16b, %[round_key_" #n "].16b\n" \
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"aesmc %[tmp" #i "].16b, %[tmp" #i "].16b\n"
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#define AES_ENC_SECOND_LAST_ROUND(n, i) \
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"aese %[tmp" #i "].16b, %[round_key_" #n "].16b\n"
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#define AES_ENC_LAST_ROUND(n, i) \
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"eor %[tmp" #i "].16b, %[tmp" #i "].16b, %[round_key_" #n "].16b\n"
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/* AES Decryption macros. */
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#define AES_DEC_ROUND(n, i) \
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"aesd %[tmp" #i "].16b, %[round_key_" #n "].16b\n" \
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"aesimc %[tmp" #i "].16b, %[tmp" #i "].16b\n"
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#define AES_DEC_SECOND_LAST_ROUND(n, i) \
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"aesd %[tmp" #i "].16b, %[round_key_" #n "].16b\n"
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#define AES_DEC_LAST_ROUND(n, i) \
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"eor %[tmp" #i "].16b, %[tmp" #i "].16b, %[round_key_" #n "].16b\n"
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namespace {
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/* TODO: Support non-Nintendo Endianness */
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ALWAYS_INLINE uint8x16_t MultiplyTweak(const uint8x16_t tweak) {
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/* TODO: Is the inline asm better than using intrinsics? */
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#if 1
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uint8x16_t mult;
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uint64_t high, low, mask;
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constexpr uint64_t xorv = 0x87ul;
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/* Use ASM. TODO: Better than using intrinsics? */
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__asm__ __volatile__ (
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"mov %[high], %[tweak].d[1]\n"
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"mov %[low], %[tweak].d[0]\n"
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"and %[mask], %[xorv], %[high], asr 63\n"
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"extr %[high], %[high], %[low], 63\n"
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"eor %[low], %[mask], %[low], lsl 1\n"
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"mov %[mult].d[1], %[high]\n"
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"mov %[mult].d[0], %[low]\n"
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: [mult]"=w"(mult),
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XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
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: [tweak]"w"(tweak),
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XTS_INCREMENT_INPUT_XOR()
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: "cc"
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);
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return mult;
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#else
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constexpr uint64_t XorMask = 0x87ul;
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const uint64x2_t tweak64 = vreinterpretq_u64_u8(tweak);
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const uint64_t high = vgetq_lane_u64(tweak64, 1);
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const uint64_t low = vgetq_lane_u64(tweak64, 0);
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const uint64_t mask = static_cast<int64_t>(high) >> (BITSIZEOF(uint64_t) - 1);
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return vreinterpretq_u8_u64(vcombine_u64(vmov_n_u64((low << 1) ^ (mask & XorMask)), vmov_n_u64((high << 1) | (low >> (BITSIZEOF(uint64_t) - 1)))));
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#endif
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}
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}
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size_t XtsModeImpl::UpdateGeneric(void *dst, size_t dst_size, const void *src, size_t src_size) {
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AMS_ASSERT(this->state == State_Initialized || this->state == State_Processing);
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return UpdateImpl<void>(this, dst, dst_size, src, src_size);
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}
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size_t XtsModeImpl::ProcessBlocksGeneric(u8 *dst, const u8 *src, size_t num_blocks) {
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size_t processed = BlockSize * (num_blocks - 1);
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if (this->state == State_Processing) {
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this->ProcessBlock(dst, this->last_block);
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dst += BlockSize;
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processed += BlockSize;
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}
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uint8x16_t tweak = vld1q_u8(this->tweak);
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while ((--num_blocks) > 0) {
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/* Xor */
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uint8x16_t block = vld1q_u8(src);
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src += BlockSize;
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block = veorq_u8(block, tweak);
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/* Encrypt */
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vst1q_u8(dst, block);
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this->cipher_func(dst, dst, this->cipher_ctx);
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block = vld1q_u8(dst);
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/* Xor */
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veorq_u8(block, tweak);
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vst1q_u8(dst, block);
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dst += BlockSize;
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/* Increment tweak. */
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tweak = MultiplyTweak(tweak);
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}
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vst1q_u8(this->tweak, tweak);
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std::memcpy(this->last_block, src, BlockSize);
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this->state = State_Processing;
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return processed;
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}
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template<> size_t XtsModeImpl::Update<AesEncryptor128>(void *dst, size_t dst_size, const void *src, size_t src_size) { return UpdateImpl<AesEncryptor128>(this, dst, dst_size, src, src_size); }
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template<> size_t XtsModeImpl::Update<AesEncryptor192>(void *dst, size_t dst_size, const void *src, size_t src_size) { return UpdateImpl<AesEncryptor192>(this, dst, dst_size, src, src_size); }
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template<> size_t XtsModeImpl::Update<AesEncryptor256>(void *dst, size_t dst_size, const void *src, size_t src_size) { return UpdateImpl<AesEncryptor256>(this, dst, dst_size, src, src_size); }
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template<> size_t XtsModeImpl::Update<AesDecryptor128>(void *dst, size_t dst_size, const void *src, size_t src_size) { return UpdateImpl<AesDecryptor128>(this, dst, dst_size, src, src_size); }
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template<> size_t XtsModeImpl::Update<AesDecryptor192>(void *dst, size_t dst_size, const void *src, size_t src_size) { return UpdateImpl<AesDecryptor192>(this, dst, dst_size, src, src_size); }
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template<> size_t XtsModeImpl::Update<AesDecryptor256>(void *dst, size_t dst_size, const void *src, size_t src_size) { return UpdateImpl<AesDecryptor256>(this, dst, dst_size, src, src_size); }
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template<>
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size_t XtsModeImpl::ProcessBlocks<AesEncryptor128>(u8 *dst, const u8 *src, size_t num_blocks) {
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/* Handle last buffered block. */
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size_t processed = (num_blocks - 1) * BlockSize;
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if (this->state == State_Processing) {
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this->ProcessBlock(dst, this->last_block);
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dst += BlockSize;
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processed += BlockSize;
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}
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/* Preload all round keys + iv into neon registers. */
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const u8 *keys = static_cast<const AesEncryptor128 *>(this->cipher_ctx)->GetRoundKey();
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DECLARE_ROUND_KEY_VAR(0);
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DECLARE_ROUND_KEY_VAR(1);
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DECLARE_ROUND_KEY_VAR(2);
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DECLARE_ROUND_KEY_VAR(3);
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DECLARE_ROUND_KEY_VAR(4);
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DECLARE_ROUND_KEY_VAR(5);
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DECLARE_ROUND_KEY_VAR(6);
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DECLARE_ROUND_KEY_VAR(7);
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DECLARE_ROUND_KEY_VAR(8);
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DECLARE_ROUND_KEY_VAR(9);
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DECLARE_ROUND_KEY_VAR(10);
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uint8x16_t tweak0 = vld1q_u8(this->tweak);
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constexpr uint64_t xorv = 0x87ul;
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uint64_t high, low, mask;
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/* Process three blocks at a time, when possible. */
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if (num_blocks > 3) {
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/* Multiply tweak twice. */
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uint8x16_t tweak1 = MultiplyTweak(tweak0);
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uint8x16_t tweak2 = MultiplyTweak(tweak1);
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do {
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/* Save tweaks for xor usage. */
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const uint8x16_t mask0 = tweak0;
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const uint8x16_t mask1 = tweak1;
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const uint8x16_t mask2 = tweak2;
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/* Read blocks in, XOR with tweaks. */
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uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src)); src += BlockSize;
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uint8x16_t tmp1 = veorq_u8(mask1, vld1q_u8(src)); src += BlockSize;
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uint8x16_t tmp2 = veorq_u8(mask2, vld1q_u8(src)); src += BlockSize;
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/* Actually do encryption, use optimized asm. */
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/* Interleave GF mult calculations with AES ones, to mask latencies. */
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__asm__ __volatile__ (
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AES_ENC_ROUND(0, 0) "mov %[high], %[tweak2].d[1]\n"
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AES_ENC_ROUND(0, 1) "mov %[low], %[tweak2].d[0]\n"
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AES_ENC_ROUND(0, 2) "and %[mask], %[xorv], %[high], asr 63\n"
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AES_ENC_ROUND(1, 0) "extr %[high], %[high], %[low], 63\n"
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AES_ENC_ROUND(1, 1) "eor %[low], %[mask], %[low], lsl 1\n"
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AES_ENC_ROUND(1, 2) "mov %[tweak0].d[1], %[high]\n"
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AES_ENC_ROUND(2, 0) "mov %[tweak0].d[0], %[low]\n"
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AES_ENC_ROUND(2, 1) "and %[mask], %[xorv], %[high], asr 63\n"
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AES_ENC_ROUND(2, 2) "extr %[high], %[high], %[low], 63\n"
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AES_ENC_ROUND(3, 0) "eor %[low], %[mask], %[low], lsl 1\n"
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AES_ENC_ROUND(3, 1) "mov %[tweak1].d[1], %[high]\n"
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AES_ENC_ROUND(3, 2) "mov %[tweak1].d[0], %[low]\n"
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AES_ENC_ROUND(4, 0) "and %[mask], %[xorv], %[high], asr 63\n"
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AES_ENC_ROUND(4, 1) "extr %[high], %[high], %[low], 63\n"
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AES_ENC_ROUND(4, 2) "eor %[low], %[mask], %[low], lsl 1\n"
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AES_ENC_ROUND(5, 0) "mov %[tweak2].d[1], %[high]\n"
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AES_ENC_ROUND(5, 1) "mov %[tweak2].d[0], %[low]\n"
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AES_ENC_ROUND(5, 2)
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AES_ENC_ROUND(6, 0) AES_ENC_ROUND(6, 1) AES_ENC_ROUND(6, 2)
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AES_ENC_ROUND(7, 0) AES_ENC_ROUND(7, 1) AES_ENC_ROUND(7, 2)
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AES_ENC_ROUND(8, 0) AES_ENC_ROUND(8, 1) AES_ENC_ROUND(8, 2)
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AES_ENC_SECOND_LAST_ROUND(9, 0) AES_ENC_SECOND_LAST_ROUND(9, 1) AES_ENC_SECOND_LAST_ROUND(9, 2)
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AES_ENC_LAST_ROUND(10, 0) AES_ENC_LAST_ROUND(10, 1) AES_ENC_LAST_ROUND(10, 2)
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: AES_ENC_DEC_OUTPUT_THREE_BLOCKS(),
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AES_ENC_DEC_OUTPUT_THREE_TWEAKS(),
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XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
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: XTS_INCREMENT_INPUT_XOR(),
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AES_ENC_DEC_INPUT_ROUND_KEY(0),
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AES_ENC_DEC_INPUT_ROUND_KEY(1),
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AES_ENC_DEC_INPUT_ROUND_KEY(2),
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AES_ENC_DEC_INPUT_ROUND_KEY(3),
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AES_ENC_DEC_INPUT_ROUND_KEY(4),
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AES_ENC_DEC_INPUT_ROUND_KEY(5),
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AES_ENC_DEC_INPUT_ROUND_KEY(6),
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AES_ENC_DEC_INPUT_ROUND_KEY(7),
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AES_ENC_DEC_INPUT_ROUND_KEY(8),
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AES_ENC_DEC_INPUT_ROUND_KEY(9),
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AES_ENC_DEC_INPUT_ROUND_KEY(10)
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: "cc"
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);
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/* XOR blocks. */
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tmp0 = veorq_u8(mask0, tmp0);
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tmp1 = veorq_u8(mask1, tmp1);
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tmp2 = veorq_u8(mask2, tmp2);
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/* Store to output. */
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vst1q_u8(dst, tmp0); dst += BlockSize;
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vst1q_u8(dst, tmp1); dst += BlockSize;
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vst1q_u8(dst, tmp2); dst += BlockSize;
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num_blocks -= 3;
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} while (num_blocks > 3);
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}
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while ((--num_blocks) > 0) {
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/* Save tweak for xor usage. */
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const uint8x16_t mask0 = tweak0;
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/* Read block in, XOR with tweak. */
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uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src));
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src += BlockSize;
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/* Actually do encryption, use optimized asm. */
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/* Interleave CTR calculations with AES ones, to mask latencies. */
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__asm__ __volatile__ (
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AES_ENC_ROUND(0, 0) "mov %[high], %[tweak0].d[1]\n"
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AES_ENC_ROUND(1, 0) "mov %[low], %[tweak0].d[0]\n"
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AES_ENC_ROUND(2, 0) "and %[mask], %[xorv], %[high], asr 63\n"
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AES_ENC_ROUND(3, 0) "extr %[high], %[high], %[low], 63\n"
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AES_ENC_ROUND(4, 0) "eor %[low], %[mask], %[low], lsl 1\n"
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AES_ENC_ROUND(5, 0) "mov %[tweak0].d[1], %[high]\n"
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AES_ENC_ROUND(6, 0) "mov %[tweak0].d[0], %[low]\n"
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AES_ENC_ROUND(7, 0)
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AES_ENC_ROUND(8, 0)
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AES_ENC_SECOND_LAST_ROUND(9, 0)
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AES_ENC_LAST_ROUND(10, 0)
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: AES_ENC_DEC_OUTPUT_ONE_BLOCK(),
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AES_ENC_DEC_OUTPUT_ONE_TWEAK(),
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XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
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: XTS_INCREMENT_INPUT_XOR(),
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AES_ENC_DEC_INPUT_ROUND_KEY(0),
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AES_ENC_DEC_INPUT_ROUND_KEY(1),
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AES_ENC_DEC_INPUT_ROUND_KEY(2),
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AES_ENC_DEC_INPUT_ROUND_KEY(3),
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AES_ENC_DEC_INPUT_ROUND_KEY(4),
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AES_ENC_DEC_INPUT_ROUND_KEY(5),
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AES_ENC_DEC_INPUT_ROUND_KEY(6),
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AES_ENC_DEC_INPUT_ROUND_KEY(7),
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AES_ENC_DEC_INPUT_ROUND_KEY(8),
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AES_ENC_DEC_INPUT_ROUND_KEY(9),
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AES_ENC_DEC_INPUT_ROUND_KEY(10)
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: "cc"
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);
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/* XOR blocks. */
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tmp0 = veorq_u8(mask0, tmp0);
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/* Store to output. */
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vst1q_u8(dst, tmp0);
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dst += BlockSize;
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}
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vst1q_u8(this->tweak, tweak0);
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std::memcpy(this->last_block, src, BlockSize);
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this->state = State_Processing;
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return processed;
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}
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template<>
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size_t XtsModeImpl::ProcessBlocks<AesEncryptor192>(u8 *dst, const u8 *src, size_t num_blocks) {
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/* Handle last buffered block. */
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size_t processed = (num_blocks - 1) * BlockSize;
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if (this->state == State_Processing) {
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this->ProcessBlock(dst, this->last_block);
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dst += BlockSize;
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processed += BlockSize;
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}
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/* Preload all round keys + iv into neon registers. */
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const u8 *keys = static_cast<const AesEncryptor192 *>(this->cipher_ctx)->GetRoundKey();
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DECLARE_ROUND_KEY_VAR(0);
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DECLARE_ROUND_KEY_VAR(1);
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DECLARE_ROUND_KEY_VAR(2);
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DECLARE_ROUND_KEY_VAR(3);
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DECLARE_ROUND_KEY_VAR(4);
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DECLARE_ROUND_KEY_VAR(5);
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DECLARE_ROUND_KEY_VAR(6);
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DECLARE_ROUND_KEY_VAR(7);
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DECLARE_ROUND_KEY_VAR(8);
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DECLARE_ROUND_KEY_VAR(9);
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DECLARE_ROUND_KEY_VAR(10);
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DECLARE_ROUND_KEY_VAR(11);
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DECLARE_ROUND_KEY_VAR(12);
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uint8x16_t tweak0 = vld1q_u8(this->tweak);
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constexpr uint64_t xorv = 0x87ul;
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uint64_t high, low, mask;
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/* Process three blocks at a time, when possible. */
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if (num_blocks > 3) {
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/* Multiply tweak twice. */
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uint8x16_t tweak1 = MultiplyTweak(tweak0);
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uint8x16_t tweak2 = MultiplyTweak(tweak1);
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do {
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/* Save tweaks for xor usage. */
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const uint8x16_t mask0 = tweak0;
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const uint8x16_t mask1 = tweak1;
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const uint8x16_t mask2 = tweak2;
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/* Read blocks in, XOR with tweaks. */
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uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src)); src += BlockSize;
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uint8x16_t tmp1 = veorq_u8(mask1, vld1q_u8(src)); src += BlockSize;
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uint8x16_t tmp2 = veorq_u8(mask2, vld1q_u8(src)); src += BlockSize;
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/* Actually do encryption, use optimized asm. */
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/* Interleave GF mult calculations with AES ones, to mask latencies. */
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__asm__ __volatile__ (
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AES_ENC_ROUND(0, 0) "mov %[high], %[tweak2].d[1]\n"
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AES_ENC_ROUND(0, 1) "mov %[low], %[tweak2].d[0]\n"
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AES_ENC_ROUND(0, 2) "and %[mask], %[xorv], %[high], asr 63\n"
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AES_ENC_ROUND(1, 0) "extr %[high], %[high], %[low], 63\n"
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AES_ENC_ROUND(1, 1) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_ENC_ROUND(1, 2) "mov %[tweak0].d[1], %[high]\n"
|
|
AES_ENC_ROUND(2, 0) "mov %[tweak0].d[0], %[low]\n"
|
|
AES_ENC_ROUND(2, 1) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_ENC_ROUND(2, 2) "extr %[high], %[high], %[low], 63\n"
|
|
AES_ENC_ROUND(3, 0) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_ENC_ROUND(3, 1) "mov %[tweak1].d[1], %[high]\n"
|
|
AES_ENC_ROUND(3, 2) "mov %[tweak1].d[0], %[low]\n"
|
|
AES_ENC_ROUND(4, 0) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_ENC_ROUND(4, 1) "extr %[high], %[high], %[low], 63\n"
|
|
AES_ENC_ROUND(4, 2) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_ENC_ROUND(5, 0) "mov %[tweak2].d[1], %[high]\n"
|
|
AES_ENC_ROUND(5, 1) "mov %[tweak2].d[0], %[low]\n"
|
|
AES_ENC_ROUND(5, 2)
|
|
AES_ENC_ROUND(6, 0) AES_ENC_ROUND(6, 1) AES_ENC_ROUND(6, 2)
|
|
AES_ENC_ROUND(7, 0) AES_ENC_ROUND(7, 1) AES_ENC_ROUND(7, 2)
|
|
AES_ENC_ROUND(8, 0) AES_ENC_ROUND(8, 1) AES_ENC_ROUND(8, 2)
|
|
AES_ENC_ROUND(9, 0) AES_ENC_ROUND(9, 1) AES_ENC_ROUND(9, 2)
|
|
AES_ENC_ROUND(10, 0) AES_ENC_ROUND(10, 1) AES_ENC_ROUND(10, 2)
|
|
AES_ENC_SECOND_LAST_ROUND(11, 0) AES_ENC_SECOND_LAST_ROUND(11, 1) AES_ENC_SECOND_LAST_ROUND(11, 2)
|
|
AES_ENC_LAST_ROUND(12, 0) AES_ENC_LAST_ROUND(12, 1) AES_ENC_LAST_ROUND(12, 2)
|
|
: AES_ENC_DEC_OUTPUT_THREE_BLOCKS(),
|
|
AES_ENC_DEC_OUTPUT_THREE_TWEAKS(),
|
|
XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
|
|
: XTS_INCREMENT_INPUT_XOR(),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(0),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(1),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(2),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(3),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(4),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(5),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(6),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(7),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(8),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(9),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(10),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(11),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(12)
|
|
: "cc"
|
|
);
|
|
|
|
/* XOR blocks. */
|
|
tmp0 = veorq_u8(mask0, tmp0);
|
|
tmp1 = veorq_u8(mask1, tmp1);
|
|
tmp2 = veorq_u8(mask2, tmp2);
|
|
|
|
/* Store to output. */
|
|
vst1q_u8(dst, tmp0); dst += BlockSize;
|
|
vst1q_u8(dst, tmp1); dst += BlockSize;
|
|
vst1q_u8(dst, tmp2); dst += BlockSize;
|
|
|
|
num_blocks -= 3;
|
|
} while (num_blocks > 3);
|
|
}
|
|
|
|
while ((--num_blocks) > 0) {
|
|
/* Save tweak for xor usage. */
|
|
const uint8x16_t mask0 = tweak0;
|
|
|
|
/* Read block in, XOR with tweak. */
|
|
uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src));
|
|
src += BlockSize;
|
|
|
|
/* Actually do encryption, use optimized asm. */
|
|
/* Interleave CTR calculations with AES ones, to mask latencies. */
|
|
__asm__ __volatile__ (
|
|
AES_ENC_ROUND(0, 0) "mov %[high], %[tweak0].d[1]\n"
|
|
AES_ENC_ROUND(1, 0) "mov %[low], %[tweak0].d[0]\n"
|
|
AES_ENC_ROUND(2, 0) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_ENC_ROUND(3, 0) "extr %[high], %[high], %[low], 63\n"
|
|
AES_ENC_ROUND(4, 0) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_ENC_ROUND(5, 0) "mov %[tweak0].d[1], %[high]\n"
|
|
AES_ENC_ROUND(6, 0) "mov %[tweak0].d[0], %[low]\n"
|
|
AES_ENC_ROUND(7, 0)
|
|
AES_ENC_ROUND(8, 0)
|
|
AES_ENC_ROUND(9, 0)
|
|
AES_ENC_ROUND(10, 0)
|
|
AES_ENC_SECOND_LAST_ROUND(11, 0)
|
|
AES_ENC_LAST_ROUND(12, 0)
|
|
: AES_ENC_DEC_OUTPUT_ONE_BLOCK(),
|
|
AES_ENC_DEC_OUTPUT_ONE_TWEAK(),
|
|
XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
|
|
: XTS_INCREMENT_INPUT_XOR(),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(0),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(1),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(2),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(3),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(4),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(5),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(6),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(7),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(8),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(9),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(10),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(11),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(12)
|
|
: "cc"
|
|
);
|
|
|
|
/* XOR blocks. */
|
|
tmp0 = veorq_u8(mask0, tmp0);
|
|
|
|
/* Store to output. */
|
|
vst1q_u8(dst, tmp0);
|
|
dst += BlockSize;
|
|
}
|
|
|
|
vst1q_u8(this->tweak, tweak0);
|
|
|
|
std::memcpy(this->last_block, src, BlockSize);
|
|
this->state = State_Processing;
|
|
|
|
return processed;
|
|
}
|
|
|
|
template<>
|
|
size_t XtsModeImpl::ProcessBlocks<AesEncryptor256>(u8 *dst, const u8 *src, size_t num_blocks) {
|
|
/* Handle last buffered block. */
|
|
size_t processed = (num_blocks - 1) * BlockSize;
|
|
|
|
if (this->state == State_Processing) {
|
|
this->ProcessBlock(dst, this->last_block);
|
|
dst += BlockSize;
|
|
processed += BlockSize;
|
|
}
|
|
|
|
/* Preload all round keys + iv into neon registers. */
|
|
const u8 *keys = static_cast<const AesEncryptor256 *>(this->cipher_ctx)->GetRoundKey();
|
|
DECLARE_ROUND_KEY_VAR(0);
|
|
DECLARE_ROUND_KEY_VAR(1);
|
|
DECLARE_ROUND_KEY_VAR(2);
|
|
DECLARE_ROUND_KEY_VAR(3);
|
|
DECLARE_ROUND_KEY_VAR(4);
|
|
DECLARE_ROUND_KEY_VAR(5);
|
|
DECLARE_ROUND_KEY_VAR(6);
|
|
DECLARE_ROUND_KEY_VAR(7);
|
|
DECLARE_ROUND_KEY_VAR(8);
|
|
DECLARE_ROUND_KEY_VAR(9);
|
|
DECLARE_ROUND_KEY_VAR(10);
|
|
DECLARE_ROUND_KEY_VAR(11);
|
|
DECLARE_ROUND_KEY_VAR(12);
|
|
DECLARE_ROUND_KEY_VAR(13);
|
|
DECLARE_ROUND_KEY_VAR(14);
|
|
uint8x16_t tweak0 = vld1q_u8(this->tweak);
|
|
constexpr uint64_t xorv = 0x87ul;
|
|
uint64_t high, low, mask;
|
|
|
|
/* Process three blocks at a time, when possible. */
|
|
if (num_blocks > 3) {
|
|
/* Multiply tweak twice. */
|
|
uint8x16_t tweak1 = MultiplyTweak(tweak0);
|
|
uint8x16_t tweak2 = MultiplyTweak(tweak1);
|
|
|
|
do {
|
|
/* Save tweaks for xor usage. */
|
|
const uint8x16_t mask0 = tweak0;
|
|
const uint8x16_t mask1 = tweak1;
|
|
const uint8x16_t mask2 = tweak2;
|
|
|
|
/* Read blocks in, XOR with tweaks. */
|
|
uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src)); src += BlockSize;
|
|
uint8x16_t tmp1 = veorq_u8(mask1, vld1q_u8(src)); src += BlockSize;
|
|
uint8x16_t tmp2 = veorq_u8(mask2, vld1q_u8(src)); src += BlockSize;
|
|
|
|
/* Actually do encryption, use optimized asm. */
|
|
/* Interleave GF mult calculations with AES ones, to mask latencies. */
|
|
__asm__ __volatile__ (
|
|
AES_ENC_ROUND(0, 0) "mov %[high], %[tweak2].d[1]\n"
|
|
AES_ENC_ROUND(0, 1) "mov %[low], %[tweak2].d[0]\n"
|
|
AES_ENC_ROUND(0, 2) "mov %[mask], #0x87\n"
|
|
AES_ENC_ROUND(1, 0) "and %[mask], %[mask], %[high], asr 63\n"
|
|
AES_ENC_ROUND(1, 1) "extr %[high], %[high], %[low], 63\n"
|
|
AES_ENC_ROUND(1, 2) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_ENC_ROUND(2, 0) "mov %[tweak0].d[1], %[high]\n"
|
|
AES_ENC_ROUND(2, 1) "mov %[tweak0].d[0], %[low]\n"
|
|
AES_ENC_ROUND(2, 2) "mov %[mask], #0x87\n"
|
|
AES_ENC_ROUND(3, 0) "and %[mask], %[mask], %[high], asr 63\n"
|
|
AES_ENC_ROUND(3, 1) "extr %[high], %[high], %[low], 63\n"
|
|
AES_ENC_ROUND(3, 2) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_ENC_ROUND(4, 0) "mov %[tweak1].d[1], %[high]\n"
|
|
AES_ENC_ROUND(4, 1) "mov %[tweak1].d[0], %[low]\n"
|
|
AES_ENC_ROUND(4, 2) "mov %[mask], #0x87\n"
|
|
AES_ENC_ROUND(5, 0) "and %[mask], %[mask], %[high], asr 63\n"
|
|
AES_ENC_ROUND(5, 1) "extr %[high], %[high], %[low], 63\n"
|
|
AES_ENC_ROUND(5, 2) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_ENC_ROUND(6, 0) "mov %[tweak2].d[1], %[high]\n"
|
|
AES_ENC_ROUND(6, 1) "mov %[tweak2].d[0], %[low]\n"
|
|
AES_ENC_ROUND(6, 2)
|
|
AES_ENC_ROUND(7, 0) AES_ENC_ROUND(7, 1) AES_ENC_ROUND(7, 2)
|
|
AES_ENC_ROUND(8, 0) AES_ENC_ROUND(8, 1) AES_ENC_ROUND(8, 2)
|
|
AES_ENC_ROUND(9, 0) AES_ENC_ROUND(9, 1) AES_ENC_ROUND(9, 2)
|
|
AES_ENC_ROUND(10, 0) AES_ENC_ROUND(10, 1) AES_ENC_ROUND(10, 2)
|
|
AES_ENC_ROUND(11, 0) AES_ENC_ROUND(11, 1) AES_ENC_ROUND(11, 2)
|
|
AES_ENC_ROUND(12, 0) AES_ENC_ROUND(12, 1) AES_ENC_ROUND(12, 2)
|
|
AES_ENC_SECOND_LAST_ROUND(13, 0) AES_ENC_SECOND_LAST_ROUND(13, 1) AES_ENC_SECOND_LAST_ROUND(13, 2)
|
|
AES_ENC_LAST_ROUND(14, 0) AES_ENC_LAST_ROUND(14, 1) AES_ENC_LAST_ROUND(14, 2)
|
|
: AES_ENC_DEC_OUTPUT_THREE_BLOCKS(),
|
|
AES_ENC_DEC_OUTPUT_THREE_TWEAKS(),
|
|
XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
|
|
: AES_ENC_DEC_INPUT_ROUND_KEY(0),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(1),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(2),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(3),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(4),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(5),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(6),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(7),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(8),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(9),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(10),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(11),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(12),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(13),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(14)
|
|
: "cc"
|
|
);
|
|
|
|
/* XOR blocks. */
|
|
tmp0 = veorq_u8(mask0, tmp0);
|
|
tmp1 = veorq_u8(mask1, tmp1);
|
|
tmp2 = veorq_u8(mask2, tmp2);
|
|
|
|
/* Store to output. */
|
|
vst1q_u8(dst, tmp0); dst += BlockSize;
|
|
vst1q_u8(dst, tmp1); dst += BlockSize;
|
|
vst1q_u8(dst, tmp2); dst += BlockSize;
|
|
|
|
num_blocks -= 3;
|
|
} while (num_blocks > 3);
|
|
}
|
|
|
|
while ((--num_blocks) > 0) {
|
|
/* Save tweak for xor usage. */
|
|
const uint8x16_t mask0 = tweak0;
|
|
|
|
/* Read block in, XOR with tweak. */
|
|
uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src));
|
|
src += BlockSize;
|
|
|
|
/* Actually do encryption, use optimized asm. */
|
|
/* Interleave CTR calculations with AES ones, to mask latencies. */
|
|
__asm__ __volatile__ (
|
|
AES_ENC_ROUND(0, 0) "mov %[high], %[tweak0].d[1]\n"
|
|
AES_ENC_ROUND(1, 0) "mov %[low], %[tweak0].d[0]\n"
|
|
AES_ENC_ROUND(2, 0) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_ENC_ROUND(3, 0) "extr %[high], %[high], %[low], 63\n"
|
|
AES_ENC_ROUND(4, 0) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_ENC_ROUND(5, 0) "mov %[tweak0].d[1], %[high]\n"
|
|
AES_ENC_ROUND(6, 0) "mov %[tweak0].d[0], %[low]\n"
|
|
AES_ENC_ROUND(7, 0)
|
|
AES_ENC_ROUND(8, 0)
|
|
AES_ENC_ROUND(9, 0)
|
|
AES_ENC_ROUND(10, 0)
|
|
AES_ENC_ROUND(11, 0)
|
|
AES_ENC_ROUND(12, 0)
|
|
AES_ENC_SECOND_LAST_ROUND(13, 0)
|
|
AES_ENC_LAST_ROUND(14, 0)
|
|
: AES_ENC_DEC_OUTPUT_ONE_BLOCK(),
|
|
AES_ENC_DEC_OUTPUT_ONE_TWEAK(),
|
|
XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
|
|
: XTS_INCREMENT_INPUT_XOR(),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(0),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(1),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(2),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(3),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(4),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(5),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(6),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(7),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(8),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(9),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(10),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(11),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(12),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(13),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(14)
|
|
: "cc"
|
|
);
|
|
|
|
/* XOR blocks. */
|
|
tmp0 = veorq_u8(mask0, tmp0);
|
|
|
|
/* Store to output. */
|
|
vst1q_u8(dst, tmp0);
|
|
dst += BlockSize;
|
|
}
|
|
|
|
vst1q_u8(this->tweak, tweak0);
|
|
|
|
std::memcpy(this->last_block, src, BlockSize);
|
|
this->state = State_Processing;
|
|
|
|
return processed;
|
|
}
|
|
|
|
template<>
|
|
size_t XtsModeImpl::ProcessBlocks<AesDecryptor128>(u8 *dst, const u8 *src, size_t num_blocks) {
|
|
/* Handle last buffered block. */
|
|
size_t processed = (num_blocks - 1) * BlockSize;
|
|
|
|
if (this->state == State_Processing) {
|
|
this->ProcessBlock(dst, this->last_block);
|
|
dst += BlockSize;
|
|
processed += BlockSize;
|
|
}
|
|
|
|
/* Preload all round keys + iv into neon registers. */
|
|
const u8 *keys = static_cast<const AesDecryptor128 *>(this->cipher_ctx)->GetRoundKey();
|
|
DECLARE_ROUND_KEY_VAR(0);
|
|
DECLARE_ROUND_KEY_VAR(1);
|
|
DECLARE_ROUND_KEY_VAR(2);
|
|
DECLARE_ROUND_KEY_VAR(3);
|
|
DECLARE_ROUND_KEY_VAR(4);
|
|
DECLARE_ROUND_KEY_VAR(5);
|
|
DECLARE_ROUND_KEY_VAR(6);
|
|
DECLARE_ROUND_KEY_VAR(7);
|
|
DECLARE_ROUND_KEY_VAR(8);
|
|
DECLARE_ROUND_KEY_VAR(9);
|
|
DECLARE_ROUND_KEY_VAR(10);
|
|
uint8x16_t tweak0 = vld1q_u8(this->tweak);
|
|
constexpr uint64_t xorv = 0x87ul;
|
|
uint64_t high, low, mask;
|
|
|
|
/* Process three blocks at a time, when possible. */
|
|
if (num_blocks > 3) {
|
|
/* Multiply tweak twice. */
|
|
uint8x16_t tweak1 = MultiplyTweak(tweak0);
|
|
uint8x16_t tweak2 = MultiplyTweak(tweak1);
|
|
|
|
do {
|
|
/* Save tweaks for xor usage. */
|
|
const uint8x16_t mask0 = tweak0;
|
|
const uint8x16_t mask1 = tweak1;
|
|
const uint8x16_t mask2 = tweak2;
|
|
|
|
/* Read blocks in, XOR with tweaks. */
|
|
uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src)); src += BlockSize;
|
|
uint8x16_t tmp1 = veorq_u8(mask1, vld1q_u8(src)); src += BlockSize;
|
|
uint8x16_t tmp2 = veorq_u8(mask2, vld1q_u8(src)); src += BlockSize;
|
|
|
|
/* Actually do encryption, use optimized asm. */
|
|
/* Interleave GF mult calculations with AES ones, to mask latencies. */
|
|
__asm__ __volatile__ (
|
|
AES_DEC_ROUND(10, 0) "mov %[high], %[tweak2].d[1]\n"
|
|
AES_DEC_ROUND(10, 1) "mov %[low], %[tweak2].d[0]\n"
|
|
AES_DEC_ROUND(10, 2) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_DEC_ROUND(9, 0) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(9, 1) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(9, 2) "mov %[tweak0].d[1], %[high]\n"
|
|
AES_DEC_ROUND(8, 0) "mov %[tweak0].d[0], %[low]\n"
|
|
AES_DEC_ROUND(8, 1) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_DEC_ROUND(8, 2) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(7, 0) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(7, 1) "mov %[tweak1].d[1], %[high]\n"
|
|
AES_DEC_ROUND(7, 2) "mov %[tweak1].d[0], %[low]\n"
|
|
AES_DEC_ROUND(6, 0) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_DEC_ROUND(6, 1) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(6, 2) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(5, 0) "mov %[tweak2].d[1], %[high]\n"
|
|
AES_DEC_ROUND(5, 1) "mov %[tweak2].d[0], %[low]\n"
|
|
AES_DEC_ROUND(5, 2)
|
|
AES_DEC_ROUND(4, 0) AES_DEC_ROUND(4, 1) AES_DEC_ROUND(4, 2)
|
|
AES_DEC_ROUND(3, 0) AES_DEC_ROUND(3, 1) AES_DEC_ROUND(3, 2)
|
|
AES_DEC_ROUND(2, 0) AES_DEC_ROUND(2, 1) AES_DEC_ROUND(2, 2)
|
|
AES_DEC_SECOND_LAST_ROUND(1, 0) AES_DEC_SECOND_LAST_ROUND(1, 1) AES_DEC_SECOND_LAST_ROUND(1, 2)
|
|
AES_DEC_LAST_ROUND(0, 0) AES_DEC_LAST_ROUND(0, 1) AES_DEC_LAST_ROUND(0, 2)
|
|
: AES_ENC_DEC_OUTPUT_THREE_BLOCKS(),
|
|
AES_ENC_DEC_OUTPUT_THREE_TWEAKS(),
|
|
XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
|
|
: XTS_INCREMENT_INPUT_XOR(),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(0),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(1),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(2),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(3),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(4),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(5),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(6),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(7),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(8),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(9),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(10)
|
|
: "cc"
|
|
);
|
|
|
|
/* XOR blocks. */
|
|
tmp0 = veorq_u8(mask0, tmp0);
|
|
tmp1 = veorq_u8(mask1, tmp1);
|
|
tmp2 = veorq_u8(mask2, tmp2);
|
|
|
|
/* Store to output. */
|
|
vst1q_u8(dst, tmp0); dst += BlockSize;
|
|
vst1q_u8(dst, tmp1); dst += BlockSize;
|
|
vst1q_u8(dst, tmp2); dst += BlockSize;
|
|
|
|
num_blocks -= 3;
|
|
} while (num_blocks > 3);
|
|
}
|
|
|
|
while ((--num_blocks) > 0) {
|
|
/* Save tweak for xor usage. */
|
|
const uint8x16_t mask0 = tweak0;
|
|
|
|
/* Read block in, XOR with tweak. */
|
|
uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src));
|
|
src += BlockSize;
|
|
|
|
/* Actually do encryption, use optimized asm. */
|
|
/* Interleave CTR calculations with AES ones, to mask latencies. */
|
|
__asm__ __volatile__ (
|
|
AES_DEC_ROUND(10, 0) "mov %[high], %[tweak0].d[1]\n"
|
|
AES_DEC_ROUND(9, 0) "mov %[low], %[tweak0].d[0]\n"
|
|
AES_DEC_ROUND(8, 0) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_DEC_ROUND(7, 0) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(6, 0) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(5, 0) "mov %[tweak0].d[1], %[high]\n"
|
|
AES_DEC_ROUND(4, 0) "mov %[tweak0].d[0], %[low]\n"
|
|
AES_DEC_ROUND(3, 0)
|
|
AES_DEC_ROUND(2, 0)
|
|
AES_DEC_SECOND_LAST_ROUND(1, 0)
|
|
AES_DEC_LAST_ROUND(0, 0)
|
|
: AES_ENC_DEC_OUTPUT_ONE_BLOCK(),
|
|
AES_ENC_DEC_OUTPUT_ONE_TWEAK(),
|
|
XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
|
|
: XTS_INCREMENT_INPUT_XOR(),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(0),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(1),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(2),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(3),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(4),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(5),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(6),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(7),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(8),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(9),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(10)
|
|
: "cc"
|
|
);
|
|
|
|
/* XOR blocks. */
|
|
tmp0 = veorq_u8(mask0, tmp0);
|
|
|
|
/* Store to output. */
|
|
vst1q_u8(dst, tmp0);
|
|
dst += BlockSize;
|
|
}
|
|
|
|
vst1q_u8(this->tweak, tweak0);
|
|
|
|
std::memcpy(this->last_block, src, BlockSize);
|
|
this->state = State_Processing;
|
|
|
|
return processed;
|
|
}
|
|
|
|
template<>
|
|
size_t XtsModeImpl::ProcessBlocks<AesDecryptor192>(u8 *dst, const u8 *src, size_t num_blocks) {
|
|
/* Handle last buffered block. */
|
|
size_t processed = (num_blocks - 1) * BlockSize;
|
|
|
|
if (this->state == State_Processing) {
|
|
this->ProcessBlock(dst, this->last_block);
|
|
dst += BlockSize;
|
|
processed += BlockSize;
|
|
}
|
|
|
|
/* Preload all round keys + iv into neon registers. */
|
|
const u8 *keys = static_cast<const AesDecryptor192 *>(this->cipher_ctx)->GetRoundKey();
|
|
DECLARE_ROUND_KEY_VAR(0);
|
|
DECLARE_ROUND_KEY_VAR(1);
|
|
DECLARE_ROUND_KEY_VAR(2);
|
|
DECLARE_ROUND_KEY_VAR(3);
|
|
DECLARE_ROUND_KEY_VAR(4);
|
|
DECLARE_ROUND_KEY_VAR(5);
|
|
DECLARE_ROUND_KEY_VAR(6);
|
|
DECLARE_ROUND_KEY_VAR(7);
|
|
DECLARE_ROUND_KEY_VAR(8);
|
|
DECLARE_ROUND_KEY_VAR(9);
|
|
DECLARE_ROUND_KEY_VAR(10);
|
|
DECLARE_ROUND_KEY_VAR(11);
|
|
DECLARE_ROUND_KEY_VAR(12);
|
|
uint8x16_t tweak0 = vld1q_u8(this->tweak);
|
|
constexpr uint64_t xorv = 0x87ul;
|
|
uint64_t high, low, mask;
|
|
|
|
/* Process three blocks at a time, when possible. */
|
|
if (num_blocks > 3) {
|
|
/* Multiply tweak twice. */
|
|
uint8x16_t tweak1 = MultiplyTweak(tweak0);
|
|
uint8x16_t tweak2 = MultiplyTweak(tweak1);
|
|
|
|
do {
|
|
/* Save tweaks for xor usage. */
|
|
const uint8x16_t mask0 = tweak0;
|
|
const uint8x16_t mask1 = tweak1;
|
|
const uint8x16_t mask2 = tweak2;
|
|
|
|
/* Read blocks in, XOR with tweaks. */
|
|
uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src)); src += BlockSize;
|
|
uint8x16_t tmp1 = veorq_u8(mask1, vld1q_u8(src)); src += BlockSize;
|
|
uint8x16_t tmp2 = veorq_u8(mask2, vld1q_u8(src)); src += BlockSize;
|
|
|
|
/* Actually do encryption, use optimized asm. */
|
|
/* Interleave GF mult calculations with AES ones, to mask latencies. */
|
|
__asm__ __volatile__ (
|
|
AES_DEC_ROUND(12, 0) "mov %[high], %[tweak2].d[1]\n"
|
|
AES_DEC_ROUND(12, 1) "mov %[low], %[tweak2].d[0]\n"
|
|
AES_DEC_ROUND(12, 2) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_DEC_ROUND(11, 0) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(11, 1) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(11, 2) "mov %[tweak0].d[1], %[high]\n"
|
|
AES_DEC_ROUND(10, 0) "mov %[tweak0].d[0], %[low]\n"
|
|
AES_DEC_ROUND(10, 1) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_DEC_ROUND(10, 2) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(9, 0) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(9, 1) "mov %[tweak1].d[1], %[high]\n"
|
|
AES_DEC_ROUND(9, 2) "mov %[tweak1].d[0], %[low]\n"
|
|
AES_DEC_ROUND(8, 0) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_DEC_ROUND(8, 1) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(8, 2) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(7, 0) "mov %[tweak2].d[1], %[high]\n"
|
|
AES_DEC_ROUND(7, 1) "mov %[tweak2].d[0], %[low]\n"
|
|
AES_DEC_ROUND(7, 2)
|
|
AES_DEC_ROUND(6, 0) AES_DEC_ROUND(6, 1) AES_DEC_ROUND(6, 2)
|
|
AES_DEC_ROUND(5, 0) AES_DEC_ROUND(5, 1) AES_DEC_ROUND(5, 2)
|
|
AES_DEC_ROUND(4, 0) AES_DEC_ROUND(4, 1) AES_DEC_ROUND(4, 2)
|
|
AES_DEC_ROUND(3, 0) AES_DEC_ROUND(3, 1) AES_DEC_ROUND(3, 2)
|
|
AES_DEC_ROUND(2, 0) AES_DEC_ROUND(2, 1) AES_DEC_ROUND(2, 2)
|
|
AES_DEC_SECOND_LAST_ROUND(1, 0) AES_DEC_SECOND_LAST_ROUND(1, 1) AES_DEC_SECOND_LAST_ROUND(1, 2)
|
|
AES_DEC_LAST_ROUND(0, 0) AES_DEC_LAST_ROUND(0, 1) AES_DEC_LAST_ROUND(0, 2)
|
|
: AES_ENC_DEC_OUTPUT_THREE_BLOCKS(),
|
|
AES_ENC_DEC_OUTPUT_THREE_TWEAKS(),
|
|
XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
|
|
: XTS_INCREMENT_INPUT_XOR(),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(0),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(1),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(2),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(3),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(4),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(5),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(6),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(7),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(8),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(9),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(10),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(11),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(12)
|
|
: "cc"
|
|
);
|
|
|
|
/* XOR blocks. */
|
|
tmp0 = veorq_u8(mask0, tmp0);
|
|
tmp1 = veorq_u8(mask1, tmp1);
|
|
tmp2 = veorq_u8(mask2, tmp2);
|
|
|
|
/* Store to output. */
|
|
vst1q_u8(dst, tmp0); dst += BlockSize;
|
|
vst1q_u8(dst, tmp1); dst += BlockSize;
|
|
vst1q_u8(dst, tmp2); dst += BlockSize;
|
|
|
|
num_blocks -= 3;
|
|
} while (num_blocks > 3);
|
|
}
|
|
|
|
while ((--num_blocks) > 0) {
|
|
/* Save tweak for xor usage. */
|
|
const uint8x16_t mask0 = tweak0;
|
|
|
|
/* Read block in, XOR with tweak. */
|
|
uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src));
|
|
src += BlockSize;
|
|
|
|
/* Actually do encryption, use optimized asm. */
|
|
/* Interleave CTR calculations with AES ones, to mask latencies. */
|
|
__asm__ __volatile__ (
|
|
AES_DEC_ROUND(12, 0) "mov %[high], %[tweak0].d[1]\n"
|
|
AES_DEC_ROUND(11, 0) "mov %[low], %[tweak0].d[0]\n"
|
|
AES_DEC_ROUND(10, 0) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_DEC_ROUND(9, 0) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(8, 0) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(7, 0) "mov %[tweak0].d[1], %[high]\n"
|
|
AES_DEC_ROUND(6, 0) "mov %[tweak0].d[0], %[low]\n"
|
|
AES_DEC_ROUND(5, 0)
|
|
AES_DEC_ROUND(4, 0)
|
|
AES_DEC_ROUND(3, 0)
|
|
AES_DEC_ROUND(2, 0)
|
|
AES_DEC_SECOND_LAST_ROUND(1, 0)
|
|
AES_DEC_LAST_ROUND(0, 0)
|
|
: AES_ENC_DEC_OUTPUT_ONE_BLOCK(),
|
|
AES_ENC_DEC_OUTPUT_ONE_TWEAK(),
|
|
XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
|
|
: XTS_INCREMENT_INPUT_XOR(),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(0),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(1),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(2),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(3),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(4),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(5),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(6),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(7),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(8),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(9),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(10),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(11),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(12)
|
|
: "cc"
|
|
);
|
|
|
|
/* XOR blocks. */
|
|
tmp0 = veorq_u8(mask0, tmp0);
|
|
|
|
/* Store to output. */
|
|
vst1q_u8(dst, tmp0);
|
|
dst += BlockSize;
|
|
}
|
|
|
|
vst1q_u8(this->tweak, tweak0);
|
|
|
|
std::memcpy(this->last_block, src, BlockSize);
|
|
this->state = State_Processing;
|
|
|
|
return processed;
|
|
}
|
|
|
|
template<>
|
|
size_t XtsModeImpl::ProcessBlocks<AesDecryptor256>(u8 *dst, const u8 *src, size_t num_blocks) {
|
|
/* Handle last buffered block. */
|
|
size_t processed = (num_blocks - 1) * BlockSize;
|
|
|
|
if (this->state == State_Processing) {
|
|
this->ProcessBlock(dst, this->last_block);
|
|
dst += BlockSize;
|
|
processed += BlockSize;
|
|
}
|
|
|
|
/* Preload all round keys + iv into neon registers. */
|
|
const u8 *keys = static_cast<const AesDecryptor256 *>(this->cipher_ctx)->GetRoundKey();
|
|
DECLARE_ROUND_KEY_VAR(0);
|
|
DECLARE_ROUND_KEY_VAR(1);
|
|
DECLARE_ROUND_KEY_VAR(2);
|
|
DECLARE_ROUND_KEY_VAR(3);
|
|
DECLARE_ROUND_KEY_VAR(4);
|
|
DECLARE_ROUND_KEY_VAR(5);
|
|
DECLARE_ROUND_KEY_VAR(6);
|
|
DECLARE_ROUND_KEY_VAR(7);
|
|
DECLARE_ROUND_KEY_VAR(8);
|
|
DECLARE_ROUND_KEY_VAR(9);
|
|
DECLARE_ROUND_KEY_VAR(10);
|
|
DECLARE_ROUND_KEY_VAR(11);
|
|
DECLARE_ROUND_KEY_VAR(12);
|
|
DECLARE_ROUND_KEY_VAR(13);
|
|
DECLARE_ROUND_KEY_VAR(14);
|
|
uint8x16_t tweak0 = vld1q_u8(this->tweak);
|
|
constexpr uint64_t xorv = 0x87ul;
|
|
uint64_t high, low, mask;
|
|
|
|
/* Process three blocks at a time, when possible. */
|
|
if (num_blocks > 3) {
|
|
/* Multiply tweak twice. */
|
|
uint8x16_t tweak1 = MultiplyTweak(tweak0);
|
|
uint8x16_t tweak2 = MultiplyTweak(tweak1);
|
|
|
|
do {
|
|
/* Save tweaks for xor usage. */
|
|
const uint8x16_t mask0 = tweak0;
|
|
const uint8x16_t mask1 = tweak1;
|
|
const uint8x16_t mask2 = tweak2;
|
|
|
|
/* Read blocks in, XOR with tweaks. */
|
|
uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src)); src += BlockSize;
|
|
uint8x16_t tmp1 = veorq_u8(mask1, vld1q_u8(src)); src += BlockSize;
|
|
uint8x16_t tmp2 = veorq_u8(mask2, vld1q_u8(src)); src += BlockSize;
|
|
|
|
/* Actually do encryption, use optimized asm. */
|
|
/* Interleave GF mult calculations with AES ones, to mask latencies. */
|
|
__asm__ __volatile__ (
|
|
AES_DEC_ROUND(14, 0) "mov %[high], %[tweak2].d[1]\n"
|
|
AES_DEC_ROUND(14, 1) "mov %[low], %[tweak2].d[0]\n"
|
|
AES_DEC_ROUND(14, 2) "mov %[mask], 0x87\n"
|
|
AES_DEC_ROUND(13, 0) "and %[mask], %[mask], %[high], asr 63\n"
|
|
AES_DEC_ROUND(13, 1) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(13, 2) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(12, 0) "mov %[tweak0].d[1], %[high]\n"
|
|
AES_DEC_ROUND(12, 1) "mov %[tweak0].d[0], %[low]\n"
|
|
AES_DEC_ROUND(12, 2) "mov %[mask], 0x87\n"
|
|
AES_DEC_ROUND(11, 0) "and %[mask], %[mask], %[high], asr 63\n"
|
|
AES_DEC_ROUND(11, 1) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(11, 2) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(10, 0) "mov %[tweak1].d[1], %[high]\n"
|
|
AES_DEC_ROUND(10, 1) "mov %[tweak1].d[0], %[low]\n"
|
|
AES_DEC_ROUND(10, 2) "mov %[mask], 0x87\n"
|
|
AES_DEC_ROUND(9, 0) "and %[mask], %[mask], %[high], asr 63\n"
|
|
AES_DEC_ROUND(9, 1) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(9, 2) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(8, 0) "mov %[tweak2].d[1], %[high]\n"
|
|
AES_DEC_ROUND(8, 1) "mov %[tweak2].d[0], %[low]\n"
|
|
AES_DEC_ROUND(8, 2)
|
|
AES_DEC_ROUND(7, 0) AES_DEC_ROUND(7, 1) AES_DEC_ROUND(7, 2)
|
|
AES_DEC_ROUND(6, 0) AES_DEC_ROUND(6, 1) AES_DEC_ROUND(6, 2)
|
|
AES_DEC_ROUND(5, 0) AES_DEC_ROUND(5, 1) AES_DEC_ROUND(5, 2)
|
|
AES_DEC_ROUND(4, 0) AES_DEC_ROUND(4, 1) AES_DEC_ROUND(4, 2)
|
|
AES_DEC_ROUND(3, 0) AES_DEC_ROUND(3, 1) AES_DEC_ROUND(3, 2)
|
|
AES_DEC_ROUND(2, 0) AES_DEC_ROUND(2, 1) AES_DEC_ROUND(2, 2)
|
|
AES_DEC_SECOND_LAST_ROUND(1, 0) AES_DEC_SECOND_LAST_ROUND(1, 1) AES_DEC_SECOND_LAST_ROUND(1, 2)
|
|
AES_DEC_LAST_ROUND(0, 0) AES_DEC_LAST_ROUND(0, 1) AES_DEC_LAST_ROUND(0, 2)
|
|
: AES_ENC_DEC_OUTPUT_THREE_BLOCKS(),
|
|
AES_ENC_DEC_OUTPUT_THREE_TWEAKS(),
|
|
XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
|
|
: AES_ENC_DEC_INPUT_ROUND_KEY(0),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(1),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(2),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(3),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(4),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(5),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(6),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(7),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(8),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(9),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(10),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(11),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(12),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(13),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(14)
|
|
: "cc"
|
|
);
|
|
|
|
/* XOR blocks. */
|
|
tmp0 = veorq_u8(mask0, tmp0);
|
|
tmp1 = veorq_u8(mask1, tmp1);
|
|
tmp2 = veorq_u8(mask2, tmp2);
|
|
|
|
/* Store to output. */
|
|
vst1q_u8(dst, tmp0); dst += BlockSize;
|
|
vst1q_u8(dst, tmp1); dst += BlockSize;
|
|
vst1q_u8(dst, tmp2); dst += BlockSize;
|
|
|
|
num_blocks -= 3;
|
|
} while (num_blocks > 3);
|
|
}
|
|
|
|
while ((--num_blocks) > 0) {
|
|
/* Save tweak for xor usage. */
|
|
const uint8x16_t mask0 = tweak0;
|
|
|
|
/* Read block in, XOR with tweak. */
|
|
uint8x16_t tmp0 = veorq_u8(mask0, vld1q_u8(src));
|
|
src += BlockSize;
|
|
|
|
/* Actually do encryption, use optimized asm. */
|
|
/* Interleave CTR calculations with AES ones, to mask latencies. */
|
|
__asm__ __volatile__ (
|
|
AES_DEC_ROUND(14, 0) "mov %[high], %[tweak0].d[1]\n"
|
|
AES_DEC_ROUND(13, 0) "mov %[low], %[tweak0].d[0]\n"
|
|
AES_DEC_ROUND(12, 0) "and %[mask], %[xorv], %[high], asr 63\n"
|
|
AES_DEC_ROUND(11, 0) "extr %[high], %[high], %[low], 63\n"
|
|
AES_DEC_ROUND(10, 0) "eor %[low], %[mask], %[low], lsl 1\n"
|
|
AES_DEC_ROUND(9, 0) "mov %[tweak0].d[1], %[high]\n"
|
|
AES_DEC_ROUND(8, 0) "mov %[tweak0].d[0], %[low]\n"
|
|
AES_DEC_ROUND(7, 0)
|
|
AES_DEC_ROUND(6, 0)
|
|
AES_DEC_ROUND(5, 0)
|
|
AES_DEC_ROUND(4, 0)
|
|
AES_DEC_ROUND(3, 0)
|
|
AES_DEC_ROUND(2, 0)
|
|
AES_DEC_SECOND_LAST_ROUND(1, 0)
|
|
AES_DEC_LAST_ROUND(0, 0)
|
|
: AES_ENC_DEC_OUTPUT_ONE_BLOCK(),
|
|
AES_ENC_DEC_OUTPUT_ONE_TWEAK(),
|
|
XTS_INCREMENT_OUTPUT_HIGH_LOW_MASK()
|
|
: XTS_INCREMENT_INPUT_XOR(),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(0),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(1),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(2),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(3),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(4),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(5),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(6),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(7),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(8),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(9),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(10),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(11),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(12),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(13),
|
|
AES_ENC_DEC_INPUT_ROUND_KEY(14)
|
|
: "cc"
|
|
);
|
|
|
|
/* XOR blocks. */
|
|
tmp0 = veorq_u8(mask0, tmp0);
|
|
|
|
/* Store to output. */
|
|
vst1q_u8(dst, tmp0);
|
|
dst += BlockSize;
|
|
}
|
|
|
|
vst1q_u8(this->tweak, tweak0);
|
|
|
|
std::memcpy(this->last_block, src, BlockSize);
|
|
this->state = State_Processing;
|
|
|
|
return processed;
|
|
}
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
/* TODO: Non-EL0 implementation. */
|
|
namespace ams::crypto::impl {
|
|
|
|
}
|
|
|
|
#endif
|
|
|