%.lst: %.elf
$(OBJDUMP) -h -S $< > $@
+%.lst: %.o
+ $(OBJDUMP) -h -S $< > $@
+
# Rules for building the .text rom images
%.hex: %.elf
#ifndef NOEKEON_NO_ENC
; === noekeon_enc ===
;
-; param1: pointer to buffer/state (r24,r25)
+; param1: pointer to buffer (r24,r25)
; param2: pointer to k (r22,r23)
;
.global noekeon_enc
--- /dev/null
+/* noekeon_cbc_enc.S */
+/*
+ This file is part of the Crypto-avr-lib/microcrypt-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/>.
+*/
+/*
+ * \author Daniel Otte
+ * \email daniel.otte@rub.de
+ * \date 2008-08-06
+ * \license GPLv3 or later
+ *
+ *
+ *
+ */
+
+.macro push_ p1:req p2:vararg
+ push \p1
+.ifnb \p2
+ push_ \p2
+.endif
+.endm
+
+.macro pop_ p1:req p2:vararg
+ pop \p1
+.ifnb \p2
+ pop_ \p2
+.endif
+.endm
+
+.extern noekeon_enc
+
+/*
+ * void noekeon_cbc_enc(void* buffer, uint8_t block_cnt, const void* key)
+ */
+
+/* param buffer is passed in r24:r25
+ * param block_cnt is passed in r22 (r23 is 0)
+ * param key is passed in r20:r21
+ */
+.global noekeon_cbc_enc
+ noekeon_cbc_enc:
+ push r22
+ movw r22, r20
+ push_ r22, r23, r24, r25
+ rcall noekeon_enc
+1:
+ pop_ r27, r26, r23, r22
+ pop r16 /* bloc counter */
+ dec r16
+ breq 9f
+ push r16
+ /* xor blocks */
+ movw r30, r26
+ adiw r30, 16
+ ldi r16, 16
+2:
+ ld r17, X+
+ ld r18, Z
+ eor r18, r17
+ st Z+, r18
+ dec r16
+ brne 2b
+
+ /* call encryption function; X points to our new block */
+ push_ r22, r23, r26, r27
+ movw r24, r26
+ rcall noekeon_enc
+ rjmp 1b
+9:
+ ret
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
--- /dev/null
+#ifndef NOEKEON_CBC_ENC_H_
+#define NOEKEON_CBC_ENC_H_
+
+#include <stdint.h>
+#include "noekeon.h"
+
+void noekeon_cbc_enc(void* buffer, uint8_t block_cnt, const void* key);
+
+#endif /*NOEKEON_CBC_ENC_H_*/
--- /dev/null
+/* noekeon_ctr.S */
+/*
+ This file is part of the Crypto-avr-lib/microcrypt-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/>.
+*/
+/*
+ * \author Daniel Otte
+ * \email daniel.otte@rub.de
+ * \date 2008-08-06
+ * \license GPLv3 or later
+ *
+ *
+ *
+ */
+
+.extern noekeon_enc
+
+/*
+ * void noekeon_ctr_next(void* buffer, const noekeon_ctr_ctx_t* ctx);
+ */
+.global noekeon_ctr_next
+/*
+ * param buffer passed in r24:r25
+ * param ctx passed in r22:r23
+ */
+noekeon_ctr_next:
+ /* copy counter to buffer */
+ movw r26, r24 /* copy buffer pointer to X */
+ movw r30, r22 /* copy counter pointer to Z */
+ ldi r16, 16
+1:
+ ld r0, Z+
+ st X+, r0
+ dec r16
+ brne 1b
+ /* increment counter */
+ movw r30, r22 /* copy counter pointer to Z */
+ ldi r17, 1
+ ldi r16, 15
+ ld r0, Z
+ add r0, r17
+ st Z+, r0
+1:
+ ld r0, Z
+ adc r0, r1
+ st Z+, r0
+ dec r16
+ brne 1b
+ /* call encryption routine */
+ /* we can leave the first param as is, but have to adjust the second to point to the key */
+ //adiw r22, 16
+ ldi r16, 16
+ add r22, r16
+ adc r23, r0
+// rcall noekeon_enc
+// ret
+ rjmp noekeon_enc /* noekeon_enc will return for us */
--- /dev/null
+/* noekeon_ctr.h */
+/*
+ This file is part of the Crypto-avr-lib/microcrypt-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/>.
+*/
+/*
+ * \author Daniel Otte
+ * \email daniel.otte@rub.de
+ * \date 2008-08-06
+ * \license GPLv3 or later
+ *
+ *
+ *
+ */
+
+#ifndef NOEKEON_CTR_H_
+#define NOEKEON_CTR_H_
+
+#include <stdint.h>
+#include "noekeon.h"
+
+typedef struct{
+ uint8_t counter[16];
+ uint8_t key[16];
+}noekeon_ctr_ctx_t;
+
+void noekeon_ctr_next(void* buffer, const noekeon_ctr_ctx_t* ctx);
+
+#endif /*NOEKEON_CTR_H_*/
--- /dev/null
+/* noekeon_omac.S */
+/*
+ This file is part of the Crypto-avr-lib/microcrypt-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/>.
+*/
+/*
+ * \author Daniel Otte
+ * \email daniel.otte@rub.de
+ * \date 2008-08-06
+ * \license GPLv3 or later
+ *
+ *
+ *
+ */
+
+#include <avr/io.h>
+
+
+.macro push_ p1:req, p2:vararg
+ push \p1
+.ifnb \p2
+ push_ \p2
+.endif
+.endm
+
+.macro pop_ p1:req, p2:vararg
+ pop \p1
+.ifnb \p2
+ pop_ \p2
+.endif
+.endm
+
+.macro push_range from:req, to:req
+ push \from
+.if \to-\from
+ push_range "(\from+1)",\to
+.endif
+.endm
+
+.macro pop_range from:req, to:req
+ pop \to
+.if \to-\from
+ pop_range \from,"(\to-1)"
+.endif
+.endm
+
+.macro stack_alloc size:req, reg1=r30, reg2=r31
+ in \reg1, _SFR_IO_ADDR(SPL)
+ in \reg2, _SFR_IO_ADDR(SPH)
+ sbiw r30, \size
+ out _SFR_IO_ADDR(SPH), \reg2
+ out _SFR_IO_ADDR(SPL), \reg1
+.endm
+
+.macro stack_free size:req, reg1=r30, reg2=r31
+ in \reg1, _SFR_IO_ADDR(SPL)
+ in \reg2, _SFR_IO_ADDR(SPH)
+ adiw r30, \size
+ out _SFR_IO_ADDR(SPH), \reg2
+ out _SFR_IO_ADDR(SPL), \reg1
+.endm
+
+push_r18_r27_func:
+ pop r31
+ pop r30
+ push_range 18, 27
+ ijmp
+
+pop_r18_r27_func:
+ pop r31
+ pop r30
+ pop_range 18, 27
+ ijmp
+
+.extern noekeon_enc
+
+/*
+ * void noekeon_omac(void* dest, const void* msg, uint16_t msglength_b,
+ * const void* key, uint8_t t)
+ */
+
+/* param dest is passed in r24:r25
+ * param msg is passed in r22:r23
+ * param msglength_b is passed in r20:r21
+ * param key is passed in r18:r19
+ * param t is passed in r16
+ */
+.global noekeon_omac
+noekeon_omac:
+ stack_alloc 48
+ ldi r17, 48
+1:
+ st Z+, r1
+ dec r17
+ brne 1b
+ sbiw r30, 48
+ mov r26, r22
+ mov r22, r18
+ mov r18, r24
+ mov r24, r30
+ cpi r16, 0xff
+ breq 2f
+ st Z, r16
+ rcall push_r18_r27_func
+ rcall noekeon_enc
+ rcall pop_r18_r27_func
+ movw r30, r24
+2:
+ tst r21
+ brne fullblock
+ cpi r20, 128+1
+ brlo lastblock
+fullblock:
+ /* copy block to stack buffer */
+ ldi r16, 16
+1:
+ ld r0, X+
+ ld r17, Z
+ eor r0, r17
+ st Z+, r0
+ dec r16
+ brne 1b
+ rcall push_r18_r27_func
+ rcall noekeon_enc
+ rcall pop_r18_r27_func
+ movw r30, r24
+ subi r20, 128
+ sbci r21, 0
+ rjmp 2
+lastblock:
+ adiw r24, 16
+ rcall push_r18_r27_func
+ rcall noekeon_enc
+ rcall pop_r18_r27_func
+
+ bst r20, 6 /* set t bit if msglength_b%128==0*/
+2:
+ ldi r16, 16
+ clc
+ movw r30, r24 /* z points to encrypted null vector (L) */
+1:
+ ld r0, Z
+ rol r0
+ st Z+, r0
+ dec r16
+ brne 1b
+ brtc 2f
+ clt
+ rjmp 2b
+2: /* B/P has been calculated */
+ ldi r16, 16
+ sbiw r30, 32
+3:
+ ld r0, Z
+ ldd r17, Z+16
+ eor r0, r17
+ st Z+, r0
+ dec r16
+ brne 3b
+ /* B/P has been xored into stack buffer */
+ /* now we have to xor-in the remaining message */
+ mov r16, r20
+ subi r16, -7
+ lsr r16
+ lsr r16
+ lsr r16 /* r 1*/
+ sbiw r30, 16
+4:
+ ld r0, X+
+ ld r17, Z
+ eor r0, r17
+ st Z+, r0
+ dec r16
+ brne 4b
+ /* now we have only to insert the 1 at the end of message if msglength_b%128 != 0 */
+ sbiw r30, 1
+ andi r20, 0x07
+ breq 7f
+ ldi r17, 1
+5:
+ dec r20
+ breq 6f
+ lsl r17
+ rjmp 5b
+6:
+ ld r0, Z
+ eor r0, r17
+ st Z, r0
+7:
+ call noekeon_enc
+ stack_free 48
+ ret
+
+
+
+
+
+
+
+
+
+
+
+
--- /dev/null
+#ifndef NOEKEON_OMAC_H_
+#define NOEKEON_OMAC_H_
+
+#include "noekeon.h"
+#include <stdint.h>
+
+void noekeon_omac(void* dest, const void* msg, uint16_t msglength_b,
+ const void* key, uint8_t t);
+
+#endif /*NOEKEON_OMAC_H_*/
projects / avr-crypto-lib.git / commitdiff