DataHoarder
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141 lines
4.2 KiB
Go
141 lines
4.2 KiB
Go
/*
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Copyright (c) 2019 DERO Foundation. All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package aes
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import (
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"git.gammaspectra.live/P2Pool/go-randomx/v3/keys"
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"unsafe"
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)
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// HashAes1Rx4
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//
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// Calculate a 512-bit hash of 'input' using 4 lanes of AES.
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// The input is treated as a set of round keys for the encryption
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// of the initial state.
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//
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// 'inputSize' must be a multiple of 64.
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//
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// For a 2 MiB input, this has the same security as 32768-round
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// AES encryption.
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//
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// Hashing throughput: >20 GiB/s per CPU core with hardware AES
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func HashAes1Rx4(input []byte, output *[64]byte) {
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if len(input)%64 != 0 {
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panic("unsupported")
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}
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// states are copied
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states := keys.AesHash1R_State
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for input_ptr := 0; input_ptr < len(input); input_ptr += 64 {
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in := (*[4][4]uint32)(unsafe.Pointer(unsafe.SliceData(input[input_ptr:])))
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aesroundtrip_encdec(&states, in)
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}
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aesroundtrip_encdec1(&states, &keys.AesHash1R_XKeys[0])
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aesroundtrip_encdec1(&states, &keys.AesHash1R_XKeys[1])
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copy(output[:], (*[64]byte)(unsafe.Pointer(&states))[:])
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}
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// FillAes1Rx4
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//
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// Fill 'output' with pseudorandom data based on 512-bit 'state'.
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// The state is encrypted using a single AES round per 16 bytes of output
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// in 4 lanes.
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//
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// 'output' size must be a multiple of 64.
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//
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// The modified state is written back to 'state' to allow multiple
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// calls to this function.
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func FillAes1Rx4(state *[64]byte, output []byte) {
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if len(output)%len(state) != 0 {
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panic("unsupported")
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}
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// Reference to state without copying
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states := (*[4][4]uint32)(unsafe.Pointer(state))
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for outptr := 0; outptr < len(output); outptr += len(state) {
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aesroundtrip_decenc(states, &keys.AesGenerator1R_Keys)
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copy(output[outptr:], state[:])
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}
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}
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var fillAes4Rx4Keys0 = [4][4]uint32{
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keys.AesGenerator4R_Keys[0],
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keys.AesGenerator4R_Keys[0],
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keys.AesGenerator4R_Keys[4],
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keys.AesGenerator4R_Keys[4],
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}
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var fillAes4Rx4Keys1 = [4][4]uint32{
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keys.AesGenerator4R_Keys[1],
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keys.AesGenerator4R_Keys[1],
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keys.AesGenerator4R_Keys[5],
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keys.AesGenerator4R_Keys[5],
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}
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var fillAes4Rx4Keys2 = [4][4]uint32{
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keys.AesGenerator4R_Keys[2],
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keys.AesGenerator4R_Keys[2],
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keys.AesGenerator4R_Keys[6],
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keys.AesGenerator4R_Keys[6],
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}
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var fillAes4Rx4Keys3 = [4][4]uint32{
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keys.AesGenerator4R_Keys[3],
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keys.AesGenerator4R_Keys[3],
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keys.AesGenerator4R_Keys[7],
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keys.AesGenerator4R_Keys[7],
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}
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// FillAes4Rx4 used to generate final program
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func FillAes4Rx4(state [64]byte, output []byte) {
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if len(output)%len(state) != 0 {
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panic("unsupported")
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}
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// state is copied on caller
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// Copy state
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states := (*[4][4]uint32)(unsafe.Pointer(&state))
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for outptr := 0; outptr < len(output); outptr += len(state) {
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aesroundtrip_decenc(states, &fillAes4Rx4Keys0)
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aesroundtrip_decenc(states, &fillAes4Rx4Keys1)
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aesroundtrip_decenc(states, &fillAes4Rx4Keys2)
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aesroundtrip_decenc(states, &fillAes4Rx4Keys3)
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copy(output[outptr:], state[:])
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}
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}
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