+++ /dev/null
-/* bcal_present.c */
-/*
- This file is part of the ARM-Crypto-Lib.
- Copyright (C) 2006-2010 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/>.
-*/
-/**
- * \file bcal_present.c
- * \email daniel.otte@rub.de
- * \author Daniel Otte
- * \date 2009-01-09
- * \license GPLv3 or later
- *
- */
-
-#include <stdlib.h>
-#include "blockcipher_descriptor.h"
-#include "present.h"
-#include "keysize_descriptor.h"
-
-const char present_str[] = "Present";
-
-const uint8_t present_keysize_desc[] = { KS_TYPE_LIST, 1, KS_INT(80),
- KS_TYPE_TERMINATOR };
-
-const bcdesc_t present_desc = {
- BCDESC_TYPE_BLOCKCIPHER,
- BC_INIT_TYPE_1,
- present_str,
- sizeof(present_ctx_t),
- 64,
- {(void_fpt)present_init},
- {(void_fpt)present_enc},
- {(void_fpt)present_dec},
- (bc_free_fpt)NULL,
- present_keysize_desc
-};
-
-
+++ /dev/null
-/* bcal_present.h */
-/*
- This file is part of the ARM-Crypto-Lib.
- Copyright (C) 2008 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/>.
-*/
-/**
- * \file bcal_present.h
- * \email daniel.otte@rub.de
- * \author Daniel Otte
- * \date 2009-01-09
- * \license GPLv3 or later
- *
- */
-
-#include "blockcipher_descriptor.h"
-#include "present.h"
-#include "keysize_descriptor.h"
-
-extern const bcdesc_t present_desc;
--- /dev/null
+/* bcal_present.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+/**
+ * \file bcal_present.c
+ * \email daniel.otte@rub.de
+ * \author Daniel Otte
+ * \date 2009-01-09
+ * \license GPLv3 or later
+ *
+ */
+
+#include <stdlib.h>
+#include "blockcipher_descriptor.h"
+#include "present128.h"
+#include "keysize_descriptor.h"
+
+const char present128_str[] = "Present128";
+
+const uint8_t present128_keysize_desc[] = { KS_TYPE_LIST, 1, KS_INT(128),
+ KS_TYPE_TERMINATOR };
+
+const bcdesc_t present128_desc = {
+ BCDESC_TYPE_BLOCKCIPHER,
+ BC_INIT_TYPE_2,
+ present128_str,
+ sizeof(present128_ctx_t),
+ 64,
+ {(void_fpt)present128_init},
+ {(void_fpt)present128_enc},
+ {(void_fpt)present128_dec},
+ (bc_free_fpt)NULL,
+ present128_keysize_desc
+};
+
--- /dev/null
+/* bcal_present.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+/**
+ * \file bcal_present.h
+ * \email daniel.otte@rub.de
+ * \author Daniel Otte
+ * \date 2009-01-09
+ * \license GPLv3 or later
+ *
+ */
+
+#include "blockcipher_descriptor.h"
+#include "present128.h"
+#include "keysize_descriptor.h"
+
+extern const bcdesc_t present128_desc;
--- /dev/null
+/* bcal_present.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+/**
+ * \file bcal_present.c
+ * \email daniel.otte@rub.de
+ * \author Daniel Otte
+ * \date 2009-01-09
+ * \license GPLv3 or later
+ *
+ */
+
+#include <stdlib.h>
+#include "blockcipher_descriptor.h"
+#include "present80.h"
+#include "keysize_descriptor.h"
+
+const char present80_str[] = "Present80";
+
+const uint8_t present80_keysize_desc[] = { KS_TYPE_LIST, 1, KS_INT(80),
+ KS_TYPE_TERMINATOR };
+
+const bcdesc_t present80_desc = {
+ BCDESC_TYPE_BLOCKCIPHER,
+ BC_INIT_TYPE_2,
+ present80_str,
+ sizeof(present80_ctx_t),
+ 64,
+ {(void_fpt)present80_init},
+ {(void_fpt)present80_enc},
+ {(void_fpt)present80_dec},
+ (bc_free_fpt)NULL,
+ present80_keysize_desc
+};
+
+
--- /dev/null
+/* bcal_present.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+/**
+ * \file bcal_present.h
+ * \email daniel.otte@rub.de
+ * \author Daniel Otte
+ * \date 2009-01-09
+ * \license GPLv3 or later
+ *
+ */
+
+#include "blockcipher_descriptor.h"
+#include "present80.h"
+#include "keysize_descriptor.h"
+
+extern const bcdesc_t present80_desc;
+++ /dev/null
-/* present.c */
-/*
- This file is part of the ARM-Crypto-Lib.
- Copyright (C) 2006-2010 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/>.
-*/
-/**
- * present.c
- * a implementation of the PRESENT block-cipher
- * author: Daniel Otte
- * email: daniel.otte@rub.de
- * license: GPLv3
- *
- * */
-
-#include <string.h>
-#include <stdint.h>
-#include "present.h"
-
-static uint8_t sbox(uint8_t b){
- const uint8_t sb[]={ 0xC, 0x5, 0x6, 0xB,
- 0x9, 0x0, 0xA, 0xD,
- 0x3, 0xE, 0xF, 0x8,
- 0x4, 0x7, 0x1, 0x2 };
- return (((sb[b>>4])<<4)|(sb[b&0xf]));
-}
-
-static uint8_t sbox_inv(uint8_t b){
- const uint8_t sb[]={ 0x5, 0xE, 0xF, 0x8,
- 0xC, 0x1, 0x2, 0xD,
- 0xB, 0x4, 0x6, 0x3,
- 0x0, 0x7, 0x9, 0xA };
- return (((sb[b>>4])<<4)|(sb[b&0xf]));
-}
-
-#define SHR_O(a) c=(a)&1; (a)>>=1;
-#define SHR_I(a) (a)=(c?0x8000:0x0000) | ((a)>>1);
-
-static void p(uint16_t* o, uint8_t* i){
- uint8_t c;
- uint8_t m,n;
- for(m=0; m<8; ++m){
- for(n=0; n<2; ++n){
- SHR_O(i[m]);
- SHR_I(o[0]);
- SHR_O(i[m]);
- SHR_I(o[1]);
- SHR_O(i[m]);
- SHR_I(o[2]);
- SHR_O(i[m]);
- SHR_I(o[3]);
- }
- }
-}
-
-static void p_inv(uint8_t* o, uint8_t* i){
- uint8_t tmp[8];
- p((uint16_t*)tmp, i);
- p((uint16_t*)o, tmp);
-}
-
-void present_init(const uint8_t* key, uint8_t keysize_b, present_ctx_t* ctx){
- uint8_t tmp[2];
- union __attribute__((packed)) {
- uint8_t v8[10];
- uint64_t v64;
- uint16_t v16[5];
- struct __attribute__((packed)) {
- uint8_t v8[1];
- uint16_t v16[4];
- } off1;
- } b;
- uint8_t i;
- memcpy(b.v8, key, 10);
- memcpy(&(ctx->k[0]), b.v8+2, 8);
- for(i=1; i<32; ++i){
- /* rotate buffer 19 right */
- memcpy(tmp, b.v8, 2);
- memmove(b.v8, b.v8+2, 8);
- memcpy(b.v8+8, tmp, 2);
- /* three shifts to do*/
- tmp[1]=b.v8[0];
- b.v64 >>= 3;
- b.v16[4] >>= 3;
- b.v8[9] |= tmp[1]<<5;
- b.v8[7] |= tmp[0]<<5;
- /* rotating done now substitution */
- b.v8[9] = (sbox(b.v8[9])&0xF0) | ((b.v8[9])&0x0F);
- /* xor with round counter */
- b.off1.v16[0] ^= (uint16_t)i<<7;
- memcpy(&(ctx->k[i]), b.v8+2, 8);
- }
-}
-
-void present_enc(void* buffer, present_ctx_t* ctx){
- uint8_t i,j,tmp[8];
- for(i=0; i<31; ++i){
- *((uint64_t*)buffer) ^= ctx->k[i];
- for(j=0; j<8; ++j){
- tmp[j] = sbox(((uint8_t*)buffer)[j]);
- }
- p((uint16_t*)buffer, tmp);
- }
- *((uint64_t*)buffer) ^= ctx->k[31];
-}
-
-
-void present_dec(void* buffer, present_ctx_t* ctx){
- uint8_t j,tmp[8];
- int8_t i;
- *((uint64_t*)buffer) ^= ctx->k[31];
-
- for(i=30; i>=0; --i){
- p_inv(tmp, (uint8_t*)buffer);
- for(j=0; j<8; ++j){
- ((uint8_t*)buffer)[j] = sbox_inv(tmp[j]);
- }
- *((uint64_t*)buffer) ^= ctx->k[i];
- }
-}
+++ /dev/null
-/* present.h */
-/*
- This file is part of the ARM-Crypto-Lib.
- Copyright (C) 2008 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/>.
-*/
-#ifndef PRESENT_H_
-#define PRESENT_H_
-
-#include <stdint.h>
-
-typedef struct present_ctx_st{
- uint64_t k[32];
-} present_ctx_t;
-
-
-void present_init(const uint8_t* key, uint8_t keysize_b, present_ctx_t* ctx);
-void present_enc(void* buffer, present_ctx_t* ctx);
-void present_dec(void* buffer, present_ctx_t* ctx);
-
-
-#endif /*PRESENT_H_*/
--- /dev/null
+/* present128.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+/**
+ * present128.c
+ * a implementation of the PRESENT block-cipher
+ * author: Daniel Otte
+ * email: daniel.otte@rub.de
+ * license: GPLv3
+ *
+ * */
+
+#include <string.h>
+#include <stdint.h>
+#include "memxor.h"
+#include "present_common.h"
+#include "present128.h"
+
+static
+void key_update_128(uint8_t* buffer, uint8_t round){
+ uint8_t j;
+ uint8_t t8;
+ union __attribute__((packed)){
+ uint8_t v8[2];
+ uint16_t v16;
+ } tmp;
+ /* rotate buffer 67 right */
+ for(j=0; j<8; ++j){
+ tmp.v8[0] = buffer[j];
+ buffer[j] = buffer[j + 8];
+ buffer[j + 8] = tmp.v8[0];
+ }
+ j=0;
+ t8 = (uint16_t)buffer[15] << (5);
+ do{
+ tmp.v8[1] = buffer[j];
+ tmp.v16 >>= 3;
+ buffer[j] = tmp.v8[1] | t8;
+ t8 = tmp.v8[0] & 0xe0;
+ }while(++j<16);
+ /* rotating done now substitution */
+ buffer[0] = present_sbox(buffer[0]);
+ /* xor with round counter */
+ buffer[8] ^= round << 6;
+ buffer[7] ^= round >> 2;
+}
+
+
+static
+void key_update_128_inv(uint8_t* buffer, uint8_t round){
+ uint8_t j;
+ uint8_t t8;
+ union __attribute__((packed)){
+ uint8_t v8[2];
+ uint16_t v16;
+ } tmp;
+ /* xor with round counter */
+ buffer[8] ^= round << 6;
+ buffer[7] ^= round >> 2;
+
+ /* rotating done now substitution */
+ buffer[0] = present_sbox_inv(buffer[0]);
+
+ /* rotate buffer 67 left */
+ for(j=0; j<8; ++j){
+ tmp.v8[0] = buffer[j];
+ buffer[j] = buffer[j + 8];
+ buffer[j + 8] = tmp.v8[0];
+ }
+ j=15;
+ t8 = (uint16_t)buffer[0] >> (5);
+ do{
+ tmp.v8[0] = buffer[j];
+ tmp.v16 <<= 3;
+ buffer[j] = tmp.v8[0] | t8;
+ t8 = tmp.v8[1] & 0x07;
+ }while(j--);
+}
+
+void present128_init(const uint8_t* key, uint8_t keysize_b, present128_ctx_t* ctx){
+ uint8_t i;
+ memcpy(ctx->fwd_key, key, 16);
+ memcpy(ctx->rev_key, key, 16);
+ for(i=1; i<32; ++i){
+ key_update_128(ctx->rev_key, i);
+ }
+}
+
+void present128_enc(void* buffer, present128_ctx_t* ctx){
+ present_generic_enc(buffer, (uint8_t*)ctx, 16, key_update_128);
+}
+
+void present128_dec(void* buffer, present128_ctx_t* ctx){
+ present_generic_dec(buffer, (uint8_t*)ctx, 16, key_update_128_inv);
+}
+
+/*
+void present128_enc(void* buffer, present128_ctx_t* ctx){
+ uint8_t i,j,tmp[8], k[16];
+ memcpy(k, ctx->fwd_key, 16);
+ memxor(buffer, k, 8);
+ for(i=1; i<32; ++i){
+ j = 7;
+ do{
+ tmp[j] = present_sbox(((uint8_t*)buffer)[j]);
+ }while(j--);
+ present_p(buffer, tmp);
+ key_update_128(k, i);
+ memxor(buffer, k, 8);
+ }
+}
+
+void present128_dec(void* buffer, present128_ctx_t* ctx){
+ uint8_t j,tmp[8], k[16];
+ uint8_t i;
+ memcpy(k, ctx->rev_key, 16);
+ memxor(buffer, k, 8);
+ i = 31;
+ do{
+ present_p(tmp, buffer);
+ present_p(buffer, tmp);
+ j = 7;
+ do{
+ ((uint8_t*)buffer)[j] = present_sbox_inv(((uint8_t*)buffer)[j]);
+ }while(j--);
+ key_update_128_inv(k, i);
+ memxor(buffer, k, 8);
+ }while(--i);
+}
+*/
--- /dev/null
+/* present128.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+#ifndef PRESENT128_H_
+#define PRESENT128_H_
+
+#include <stdint.h>
+
+typedef struct __attribute__((packed)) present128_ctx_st {
+ uint8_t fwd_key[16];
+ uint8_t rev_key[16];
+} present128_ctx_t;
+
+
+void present128_init(const uint8_t* key, uint8_t keysize_b, present128_ctx_t* ctx);
+void present128_enc(void* buffer, present128_ctx_t* ctx);
+void present128_dec(void* buffer, present128_ctx_t* ctx);
+
+
+#endif /*PRESENT128_H_*/
--- /dev/null
+/* present80.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+/**
+ * present80.c
+ * a implementation of the PRESENT block-cipher
+ * author: Daniel Otte
+ * email: daniel.otte@rub.de
+ * license: GPLv3
+ *
+ * */
+
+#include <string.h>
+#include <stdint.h>
+#include "memxor.h"
+#include "present_common.h"
+#include "present80.h"
+
+static
+void key_update(uint8_t* buffer, uint8_t round){
+ uint8_t j;
+ union __attribute__((packed)){
+ uint8_t v8[2];
+ uint16_t v16;
+ } tmp;
+ /* rotate buffer 19 right */
+ tmp.v16 = ((uint16_t*)buffer)[4];
+ j=4;
+ do{
+ ((uint16_t*)buffer)[j] = ((uint16_t*)buffer)[j-1];
+ }while(--j);
+ ((uint16_t*)buffer)[0] = tmp.v16;
+ uint8_t t8;
+ j=0;
+ t8 = (uint16_t)buffer[9] << (5);
+ do{
+ tmp.v8[1] = buffer[j];
+ tmp.v16 >>= 3;
+ buffer[j] = tmp.v8[1] | t8;
+ t8 = tmp.v8[0] & 0xe0;
+ }while(++j<10);
+ /* rotating done now substitution */
+ buffer[0] = (present_sbox(buffer[0])&0xF0) | ((buffer[0])&0x0F);
+ /* xor with round counter */
+ buffer[8] ^= round << 7;
+ buffer[7] ^= round >> 1;
+}
+
+static
+void key_update_inv(uint8_t* buffer, uint8_t round){
+ uint8_t j;
+ union __attribute__((packed)){
+ uint8_t v8[2];
+ uint16_t v16;
+ } tmp;
+ /* xor with round counter */
+ buffer[8] ^= round << 7;
+ buffer[7] ^= round >> 1;
+ /* rotating done now substitution */
+ buffer[0] = (present_sbox_inv(buffer[0])&0xF0) | ((buffer[0])&0x0F);
+ /* rotate buffer 19 left */
+ tmp.v16 = ((uint16_t*)buffer)[0];
+ j=0;
+ do{
+ ((uint16_t*)buffer)[j] = ((uint16_t*)buffer)[j+1];
+ }while(++j<4);
+ ((uint16_t*)buffer)[4] = tmp.v16;
+ uint8_t t8;
+ j=9;
+ t8 = (uint16_t)buffer[0] >> (5);
+ do{
+ tmp.v8[0] = buffer[j];
+ tmp.v16 <<= 3;
+ buffer[j] = tmp.v8[0] | t8;
+ t8 = tmp.v8[1] & 0x07;
+ }while(j--);
+}
+
+void present80_init(const uint8_t* key, uint8_t keysize_b, present80_ctx_t* ctx){
+ uint8_t i;
+ memcpy(ctx->fwd_key, key, 10);
+ memcpy(ctx->rev_key, key, 10);
+ for(i=1; i<32; ++i){
+ key_update(ctx->rev_key, i);
+ }
+}
+
+void present80_enc(void* buffer, present80_ctx_t* ctx){
+ present_generic_enc(buffer, (uint8_t*)ctx, 10, key_update);
+}
+
+void present80_dec(void* buffer, present80_ctx_t* ctx){
+ present_generic_dec(buffer, (uint8_t*)ctx, 10, key_update_inv);
+}
+
+/*
+void present80_enc(void* buffer, present80_ctx_t* ctx){
+ uint8_t i,j,tmp[8], k[10];
+ memcpy(k, ctx->fwd_key, 10);
+ memxor(buffer, k, 8);
+ for(i=1; i<32; ++i){
+ j = 7;
+ do{
+ tmp[j] = present_sbox(((uint8_t*)buffer)[j]);
+ }while(j--);
+ present_p(buffer, tmp);
+ key_update(k, i);
+ memxor(buffer, k, 8);
+ }
+}
+
+void present80_dec(void* buffer, present80_ctx_t* ctx){
+ uint8_t j,tmp[8], k[10];
+ uint8_t i;
+ memcpy(k, ctx->rev_key, 10);
+ memxor(buffer, k, 8);
+ i = 31;
+ do{
+ present_p(tmp, buffer);
+ present_p(buffer, tmp);
+ j = 7;
+ do{
+ ((uint8_t*)buffer)[j] = sbox_inv(((uint8_t*)buffer)[j]);
+ }while(j--);
+ key_update_inv(k, i);
+ memxor(buffer, k, 8);
+ }while(--i);
+}
+*/
--- /dev/null
+/* present.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+#ifndef PRESENT80_COMMON_H_
+#define PRESENT80_COMMON_H_
+
+#include <stdint.h>
+
+typedef struct __attribute__((packed)) present80_ctx_st {
+ uint8_t fwd_key[10];
+ uint8_t rev_key[10];
+} present80_ctx_t;
+
+
+void present80_init(const uint8_t* key, uint8_t keysize_b, present80_ctx_t* ctx);
+void present80_enc(void* buffer, present80_ctx_t* ctx);
+void present80_dec(void* buffer, present80_ctx_t* ctx);
+
+#endif /*PRESENT80_H_*/
--- /dev/null
+/* present_common.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+/**
+ * present_common.c
+ * a implementation of the PRESENT block-cipher
+ * author: Daniel Otte
+ * email: daniel.otte@rub.de
+ * license: GPLv3
+ *
+ * */
+
+#include <string.h>
+#include <stdint.h>
+#include "memxor.h"
+
+uint8_t present_sbox(uint8_t b){
+ static const uint8_t sb[] = {
+ 0xC, 0x5, 0x6, 0xB,
+ 0x9, 0x0, 0xA, 0xD,
+ 0x3, 0xE, 0xF, 0x8,
+ 0x4, 0x7, 0x1, 0x2
+ };
+ return ((sb[b >> 4]) << 4) | (sb[b & 0xf]);
+}
+
+uint8_t present_sbox_inv(uint8_t b){
+ static const uint8_t sb[] = {
+ 0x5, 0xE, 0xF, 0x8,
+ 0xC, 0x1, 0x2, 0xD,
+ 0xB, 0x4, 0x6, 0x3,
+ 0x0, 0x7, 0x9, 0xA
+ };
+ return ((sb[b >> 4]) << 4) | (sb[b & 0xf]);
+}
+
+void present_p(uint8_t* o, uint8_t* i){
+ uint8_t m,n=0,idx=0;
+ for(m=0; m<64; ++m){
+ o[idx] <<= 1;
+ o[idx] |= i[n] >> 7;
+ i[n] <<= 1;
+ idx = (idx + 2) & 7;
+ if((m & 7) == 7){
+ ++n;
+ }
+ if(m == 31){
+ idx += 1;
+ }
+ }
+}
+
+
+void present_generic_enc(void* buffer, uint8_t* ctx, uint8_t ksize_B,
+ void(*update)(uint8_t*, uint8_t)){
+ uint8_t i,j,tmp[8], k[ksize_B];
+ memcpy(k, ctx, ksize_B);
+ memxor(buffer, k, 8);
+ for(i=1; i<32; ++i){
+ j = 7;
+ do{
+ tmp[j] = present_sbox(((uint8_t*)buffer)[j]);
+ }while(j--);
+ present_p(buffer, tmp);
+ update(k, i);
+ memxor(buffer, k, 8);
+ }
+}
+
+void present_generic_dec(void* buffer, uint8_t* ctx, uint8_t ksize_B,
+ void(*update)(uint8_t*, uint8_t)){
+ uint8_t j,tmp[8], k[ksize_B];
+ uint8_t i;
+ memcpy(k, ctx + ksize_B, ksize_B);
+ memxor(buffer, k, 8);
+ i = 31;
+ do{
+ present_p(tmp, buffer);
+ present_p(buffer, tmp);
+ j = 7;
+ do{
+ ((uint8_t*)buffer)[j] = present_sbox_inv(((uint8_t*)buffer)[j]);
+ }while(j--);
+ update(k, i);
+ memxor(buffer, k, 8);
+ }while(--i);
+}
+
--- /dev/null
+/* present_common.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+#ifndef PRESENT_COMMON_H_
+#define PRESENT_COMMON_H_
+
+#include <stdint.h>
+
+uint8_t present_sbox(uint8_t b);
+uint8_t present_sbox_inv(uint8_t b);
+void present_p(uint8_t* o, uint8_t* i);
+
+void present_generic_enc(void* buffer, uint8_t* ctx, uint8_t ksize_B,
+ void(*update)(uint8_t*, uint8_t));
+void present_generic_dec(void* buffer, uint8_t* ctx, uint8_t ksize_B,
+ void(*update)(uint8_t*, uint8_t));
+
+#endif /*PRESENT_H_*/
--- /dev/null
+/* present.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+/**
+ * present.c
+ * a implementation of the PRESENT block-cipher
+ * author: Daniel Otte
+ * email: daniel.otte@rub.de
+ * license: GPLv3
+ *
+ * */
+
+#include <string.h>
+#include <stdint.h>
+#include "present_speed.h"
+
+static
+void key_update(uint8_t* buffer, uint8_t round){
+ uint8_t j;
+ union __attribute__((packed)){
+ uint8_t v8[2];
+ uint16_t v16;
+ } tmp;
+ /* rotate buffer 19 right */
+ tmp.v16 = ((uint16_t*)buffer)[4];
+ j=4;
+ do{
+ ((uint16_t*)buffer)[j] = ((uint16_t*)buffer)[j-1];
+ }while(--j);
+ ((uint16_t*)buffer)[0] = tmp.v16;
+ uint8_t t8;
+ j=0;
+ t8 = (uint16_t)buffer[9] << (5);
+ do{
+ tmp.v8[1] = buffer[j];
+ tmp.v16 >>= 3;
+ buffer[j] = tmp.v8[1] | t8;
+ t8 = tmp.v8[0] & 0xe0;
+ }while(++j<10);
+ /* rotating done now substitution */
+ buffer[0] = (present_sbox(buffer[0])&0xF0) | ((buffer[0])&0x0F);
+ /* xor with round counter */
+ buffer[8] ^= round << 7;
+ buffer[7] ^= round >> 1;
+}
+
+void present_init(const uint8_t* key, uint8_t keysize_b, present_ctx_t* ctx){
+ uint8_t i,key_buffer[10];
+ memcpy(key_buffer, key, 10);
+ memcpy(&(ctx->k[0]), key_buffer, 8);
+ for(i=1; i<32; ++i){
+ key_update(key_buffer, i);
+ memcpy(&(ctx->k[i]), key_buffer, 8);
+ }
+}
+
+
+void present_enc(void* buffer, present_ctx_t* ctx){
+ uint8_t i,j,tmp[8];
+ for(i=0; i<31; ++i){
+ *((uint64_t*)buffer) ^= ctx->k[i];
+ memxor(buffer, &ctx->k[i], 8);
+ j = 7;
+ do{
+ tmp[j] = present_sbox(((uint8_t*)buffer)[j]);
+ }while(j--);
+ present_p(buffer, tmp);
+ }
+ memxor(buffer, &ctx->k[31], 8);
+}
+
+
+void present_dec(void* buffer, present_ctx_t* ctx){
+ uint8_t j,tmp[8];
+ uint8_t i;
+ memxor(buffer, &ctx->k[31], 8);
+ i = 30;
+ do{
+ present_p(tmp, buffer);
+ present_p(buffer, tmp);
+ j = 7;
+ do{
+ ((uint8_t*)buffer)[j] = present_sbox_inv(((uint8_t*)buffer)[j]);
+ }while(j--);
+ memxor(buffer, &ctx->k[i], 8);
+ }while(i--);
+}
--- /dev/null
+/* present.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 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/>.
+*/
+#ifndef PRESENT_H_
+#define PRESENT_H_
+
+#include <stdint.h>
+
+typedef struct present_ctx_st{
+ uint64_t k[32];
+} present_ctx_t;
+
+
+void present_init(const uint8_t* key, uint8_t keysize_b, present_ctx_t* ctx);
+void present_enc(void* buffer, present_ctx_t* ctx);
+void present_dec(void* buffer, present_ctx_t* ctx);
+
+
+#endif /*PRESENT_H_*/
projects / arm-crypto-lib.git / commitdiff