3 This file is part of the AVR-Crypto-Lib.
4 Copyright (C) 2010 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/>.
26 void keccak_f1600(uint8_t a[200]);
28 void keccak_lastBlock(keccak_ctx_t* ctx, const void* block, uint16_t length_b){
30 while(length_b >= ctx->r){
31 keccak_nextBlock(ctx, block);
32 block = (uint8_t*)block + ctx->bs;
35 length_B = length_b / 8;
36 memxor(ctx->a, block, length_B);
39 /* we have some single bits */
41 t = ((uint8_t*)block)[length_B] >> (8 - (length_b & 7));
42 t |= 0x01 << (length_b & 7);
43 ctx->a[length_B] ^= t;
45 ctx->a[length_B] ^= 0x01;
47 if(length_b == ctx->r - 1){
50 ctx->a[ctx->bs - 1] ^= 0x80;