--- /dev/null
+/* bcal-cfb_bit.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2010 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#include <stdint.h>
+#include <string.h>
+#include "bcal-cfb_bit.h"
+#include "bcal-basic.h"
+
+static uint8_t read_bit(void* block, uint32_t index){
+ uint8_t r;
+ r=((uint8_t*)block)[index/8];
+ r=(r&(0x80>>(index&7)))?0xff:0x00;
+ return r;
+}
+
+static void write_bit(void* block, uint32_t index, uint8_t value){
+ if(value){
+ /* set bit */
+ ((uint8_t*)block)[index/8] |= 0x80>>(index&7);
+ }else{
+ /* clear bit */
+ ((uint8_t*)block)[index/8] &= ~(0x80>>(index&7));
+ }
+}
+
+uint8_t bcal_cfb_b_init(const bcdesc_t* desc, const void* key, uint16_t keysize, uint16_t size_b, bcal_cfb_b_ctx_t* ctx){
+ ctx->desc = (bcdesc_t*)desc;
+ ctx->blocksize_B = (bcal_cipher_getBlocksize_b(desc)+7)/8;
+ ctx->in_block=malloc(ctx->blocksize_B);
+ if(ctx->in_block==NULL){
+ return 0x11;
+ }
+ if(size_b>bcal_cipher_getBlocksize_b(desc)){
+ return 0x12;
+ }
+ ctx->size_b = size_b;
+ return bcal_cipher_init(desc, key, keysize, &(ctx->cctx));
+}
+
+void bcal_cfb_b_free(bcal_cfb_b_ctx_t* ctx){
+ free(ctx->in_block);
+ bcal_cipher_free(&(ctx->cctx));
+}
+
+void bcal_cfb_b_loadIV(const void* iv, bcal_cfb_b_ctx_t* ctx){
+ memcpy(ctx->in_block, iv, ctx->blocksize_B);
+}
+
+void bcal_cfb_b_encNext(void* block, uint8_t offset, bcal_cfb_b_ctx_t* ctx){
+ uint8_t tmp[ctx->blocksize_B];
+ offset &= 7;
+ memcpy(tmp, ctx->in_block, ctx->blocksize_B);
+ bcal_cipher_enc(tmp, &(ctx->cctx));
+ uint16_t i,j;
+ uint8_t a;
+ for(i=0; i<ctx->blocksize_B*8-ctx->size_b; ++i){
+ a = read_bit(ctx->in_block, i+ctx->size_b);
+ write_bit(ctx->in_block, i, a);
+ }
+ for(j=offset,i=0; i<ctx->size_b; ++i, ++j){
+ a = read_bit(tmp, i) ^ read_bit(block, j);
+ write_bit(ctx->in_block, ctx->blocksize_B*8-ctx->size_b+i, a);
+ write_bit(block, j, a);
+ }
+}
+
+void bcal_cfb_b_decNext(void* block, uint8_t offset, bcal_cfb_b_ctx_t* ctx){
+ uint8_t tmp[ctx->blocksize_B];
+ offset &= 7;
+ memcpy(tmp, ctx->in_block, ctx->blocksize_B);
+ bcal_cipher_enc(tmp, &(ctx->cctx));
+ uint16_t i,j;
+ uint8_t a,b;
+ for(i=0; i<ctx->blocksize_B*8-ctx->size_b; ++i){
+ a = read_bit(ctx->in_block, i+ctx->size_b);
+ write_bit(ctx->in_block, i, a);
+ }
+ for(j=offset,i=0; i<ctx->size_b; ++i, ++j){
+ a = read_bit(tmp, i);
+ b = read_bit(block, j);
+ a ^= b;
+ write_bit(ctx->in_block, ctx->blocksize_B*8-ctx->size_b+i, b);
+ write_bit(block, j, a);
+ }
+}
+
+void bcal_cfb_b_encMsg(const void* iv, void* msg, uint8_t offset, uint32_t msg_blocks, bcal_cfb_b_ctx_t* ctx){
+ bcal_cfb_b_loadIV(iv, ctx);
+ uint32_t addr;
+ addr = ((uint16_t)msg)*8+offset;
+ while(msg_blocks--){
+ msg = (void*)((uint16_t)(addr/8));
+ offset = addr&7;
+ bcal_cfb_b_encNext(msg, offset, ctx);
+ addr += ctx->size_b;
+ }
+}
+
+void bcal_cfb_b_decMsg(const void* iv, void* msg, uint8_t offset, uint32_t msg_blocks, bcal_cfb_b_ctx_t* ctx){
+ bcal_cfb_b_loadIV(iv, ctx);
+ uint32_t addr;
+ addr = ((uint16_t)msg)*8+offset;
+ while(msg_blocks--){
+ msg = (void*)((uint16_t)(addr/8));
+ offset = addr&7;
+ bcal_cfb_b_decNext(msg, offset, ctx);
+ addr += ctx->size_b;
+ }
+}
--- /dev/null
+/* bcal-cfb_bit.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2010 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdint.h>
+#include "bcal-basic.h"
+#include "blockcipher_descriptor.h"
+
+
+typedef struct{
+ bcdesc_t* desc;
+ bcgen_ctx_t cctx;
+ uint8_t* in_block;
+ uint8_t blocksize_B;
+ uint16_t size_b;
+} bcal_cfb_b_ctx_t;
+
+
+uint8_t bcal_cfb_b_init(const bcdesc_t* desc, const void* key, uint16_t keysize, uint16_t size_b, bcal_cfb_b_ctx_t* ctx);
+void bcal_cfb_b_free(bcal_cfb_b_ctx_t* ctx);
+void bcal_cfb_b_loadIV(const void* iv, bcal_cfb_b_ctx_t* ctx);
+void bcal_cfb_b_encNext(void* block, uint8_t offset, bcal_cfb_b_ctx_t* ctx);
+void bcal_cfb_b_decNext(void* block, uint8_t offset, bcal_cfb_b_ctx_t* ctx);
+void bcal_cfb_b_encMsg(const void* iv, void* msg, uint8_t offset, uint32_t msg_blocks, bcal_cfb_b_ctx_t* ctx);
+void bcal_cfb_b_decMsg(const void* iv, void* msg, uint8_t offset, uint32_t msg_blocks, bcal_cfb_b_ctx_t* ctx);
+
$(ALGO_NAME)_TEST_BIN := main-aes-test.o $(CLI_STD) \
nessie_bc_test.o nessie_common.o performance_test.o memxor.o \
bcal_aes128.o bcal_aes192.o bcal_aes256.o bcal-basic.o bcal-cbc.o \
- keysize_descriptor.o dump-asm.o dump-decl.o bcal-cfb_byte.o
+ keysize_descriptor.o dump-asm.o dump-decl.o bcal-cfb_byte.o \
+ bcal-cfb_bit.o
$(ALGO_NAME)_NESSIE_TEST := test nessie
$(ALGO_NAME)_PERFORMANCE_TEST := performance
$(ALGO_NAME)_TEST_BIN := main-aes-test.o $(CLI_STD) \
nessie_bc_test.o nessie_common.o performance_test.o memxor.o \
bcal_aes128.o bcal_aes192.o bcal_aes256.o bcal-basic.o bcal-cbc.o \
- keysize_descriptor.o dump-asm.o dump-decl.o bcal-cfb_byte.o
+ keysize_descriptor.o dump-asm.o dump-decl.o bcal-cfb_byte.o \
+ bcal-cfb_bit.o
$(ALGO_NAME)_NESSIE_TEST := test nessie
$(ALGO_NAME)_PERFORMANCE_TEST := performance
#include "bcal_aes256.h"
#include "bcal-cbc.h"
#include "bcal-cfb_byte.h"
+#include "bcal-cfb_bit.h"
#include <stdint.h>
#include <string.h>
}
+void testrun_aes128_cfb1(void){
+ uint8_t key[16];
+ uint8_t iv[16];
+ uint8_t plain[64];
+
+ bcal_cfb_b_ctx_t ctx;
+ uint8_t r;
+
+ memcpy_P(key, modes_key, 16);
+ memcpy_P(iv, modes_iv, 16);
+ memcpy_P(plain, modes_plain, 64);
+
+ cli_putstr_P(PSTR("\r\n** AES128-CFB1-TEST **"));
+ r = bcal_cfb_b_init(&aes128_desc, key, 128, 1, &ctx);
+ cli_putstr_P(PSTR("\r\n init = 0x"));
+ cli_hexdump(&r, 1);
+ cli_putstr_P(PSTR("\r\n key: "));
+ cli_hexdump(key, 128/8);
+ cli_putstr_P(PSTR("\r\n IV: "));
+ cli_hexdump(iv, 128/8);
+ cli_putstr_P(PSTR("\r\n plaintext:"));
+ cli_hexdump_block(plain, 2, 4, 8);
+ if(r)
+ return;
+ uint8_t i, bit_offset, byte_offset;
+ bcal_cfb_b_loadIV(iv, &ctx);
+ for(i=0; i<16; ++i){
+ byte_offset = i/8;
+ bit_offset = i&7;
+ cli_putstr_P(PSTR("\r\n plain bit: "));
+ cli_putc((plain[byte_offset]&(1<<(7-bit_offset)))?'1':'0');
+ bcal_cfb_b_encNext(plain+byte_offset, bit_offset, &ctx);
+ cli_putstr_P(PSTR("\r\n cipher bit: "));
+ cli_putc((plain[byte_offset]&(1<<(7-bit_offset)))?'1':'0');
+ }
+ cli_putstr_P(PSTR("\r\n ciphertext: "));
+ cli_hexdump_block(plain, 2, 4, 8);
+
+ bcal_cfb_b_loadIV(iv, &ctx);
+ for(i=0; i<16; ++i){
+ byte_offset = i/8;
+ bit_offset = i&7;
+ cli_putstr_P(PSTR("\r\n plain bit: "));
+ cli_putc((plain[byte_offset]&(1<<(7-bit_offset)))?'1':'0');
+ bcal_cfb_b_decNext(plain+byte_offset, bit_offset, &ctx);
+ cli_putstr_P(PSTR("\r\n cipher bit: "));
+ cli_putc((plain[byte_offset]&(1<<(7-bit_offset)))?'1':'0');
+ }
+ cli_putstr_P(PSTR("\r\n plaintext: "));
+ cli_hexdump_block(plain, 2, 4, 8);
+
+
+ bcal_cfb_b_encMsg(iv, plain, 0, 64*8, &ctx);
+ cli_putstr_P(PSTR("\r\n ciphertext: "));
+ cli_hexdump_block(plain, 64, 4, 8);
+
+ bcal_cfb_b_decMsg(iv, plain, 0, 64*8, &ctx);
+ cli_putstr_P(PSTR("\r\n plaintext: "));
+ cli_hexdump_block(plain, 64, 4, 8);
+
+ bcal_cfb_b_free(&ctx);
+
+}
/*****************************************************************************/
void testrun_performance_aes128(void){
const char testkey_str[] PROGMEM = "testkey";
const char testcbc_str[] PROGMEM = "testcbc";
const char testcfb8_str[] PROGMEM = "testcfb8";
+const char testcfb1_str[] PROGMEM = "testcfb1";
const char performance_str[] PROGMEM = "performance";
const char dump_str[] PROGMEM = "dump";
const char echo_str[] PROGMEM = "echo";
{ testkey_str, NULL, testrun_testkey_aes},
{ testcbc_str, NULL, testrun_aes128_cbc},
{ testcfb8_str, NULL, testrun_aes128_cfb8},
+ { testcfb1_str, NULL, testrun_aes128_cfb1},
{ performance_str, NULL, testrun_performance_aes},
{ dump_str, (void*)1, (void_fpt)dump},
{ echo_str, (void*)1, (void_fpt)echo_ctrl},
projects / avr-crypto-lib.git / commitdiff