3 This file is part of the AVR-Crypto-Lib.
4 Copyright (C) 2012 Daniel Otte (daniel.otte@rub.de)
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 * \email daniel.otte@rub.de
24 * \license GPLv3 or later
29 #include "avr-asm-macros.S"
32 void keccak_theta (uint64_t *a, uint64_t *b){
34 for(i = 0; i < 5; ++i){
35 b[i][0] = a[0][i] ^ a[1][i] ^ a[2][i] ^ a[3][i] ^ a[4][i];
43 r24:r25 = a ; uint64_t a[5][5]
52 Z = r24:r25 + 7 + 4 * 40
102 for(i = 0; i < 5; ++i){
103 for(j = 0; j < 5; ++j){
104 a[j][i] ^= b[(4 + i) % 5][0];
107 for(i = 0; i < 5; ++i){
108 for(j = 0; j < 5; ++j){
109 a[j][i] ^= rotate64_1bit_left(b[(i + 1) % 5][0]);
117 /* a[0..4][0]{0..7} ^= b[4][0]{0..7} */
119 /* a[0..4][1]{0..7} ^= b[0][0]{0..7} */
120 subi XL, lo8(4 * 5 * 8 + 8)
121 sbci XH, hi8(4 * 5 * 8 + 8)
123 /* a[0..4][2]{0..7} ^= b[1][0]{0..7} */
126 /* a[0..4][3]{0..7} ^= b[2][0]{0..7} */
129 /* a[0..4][4]{0..7} ^= b[3][0]{0..7} */
140 .irp r, 0, 1, 2, 3, 4