Merge pull request 'ReferenceImplementation' (#9) from ReferenceImplementation into master
Reviewed-on: https://gitlab-gepasp.in.tum.de/gra22s/team199/pulls/9 Reviewed-by: Thomas Florian <thomas.florian@tum.de>
This commit is contained in:
Thomas Florian
commit
859be7d54e
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@ -13,7 +13,8 @@
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"array": "c",
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"md2.h": "c",
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"io.h": "c",
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"md2_0.h": "c"
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"md2_0.h": "c",
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"md2_common.h": "c"
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},
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"editor.formatOnSave": true,
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"C_Cpp.default.includePath": [
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@ -1,11 +1,11 @@
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SRC = src/main.c src/helper.c src/io.c src/md2.c src/md2_impls/md2_common.c src/md2_impls/md2_0.c src/md2_impls/md2_1.c src/md2_impls/md2_2.c src/md2_impls/md2_3.c
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SRC = src/main.c src/helper.c src/io.c src/md2.c src/md2_impls/md2_common.c src/md2_impls/md2_0.c src/md2_impls/md2_1.c src/md2_impls/md2_2.c src/md2_impls/md2_3.c src/md2_impls/md2_reference/md2_reference.c
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OBJ = ${subst src,build,${SRC:.c=.o}}
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CC = gcc
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CFLAGS = -Ilib -ggdb -std=c11 -g -Wall -Wextra -no-pie -O3
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LDFLAGS = -pthread
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TESTFILES = t/10000 t/1 t/10 t/100 t/1000 #t/2000 t/5000 t/10000
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TESTFILES = t/1 t/2 t/5 t/10 t/20 t/50 t/100 t/1000 t/2000 t/5000 t/10000
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TESTFILES_SIZES = ${subst t/,,${TESTFILES}}
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all: md2
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@ -23,7 +23,7 @@ help:
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@echo - benchmarks: run benchmarks (only works on linux!)
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build/%.o: src/%.c
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@mkdir -p build/md2_impls
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@mkdir -p build/md2_impls/md2_reference
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${CC} -c ${CFLAGS} -o $@ $<
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md2: ${OBJ}
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@ -38,21 +38,29 @@ t/%:
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benchmarks.csv: md2 ${TESTFILES}
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@rm -f $@
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@for i in 0 1 2 3; do \
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@echo -n "Implementierung" > $@
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@for t in $(TESTFILES_SIZES); do \
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echo -n ";$$t" >> $@; \
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done
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@echo "" >> $@
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@for i in 0 1 2 3 4; do \
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echo ;\
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echo "=== Testing implementation $$i ===";\
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echo -n "Implementierung-$$i" >> $@; \
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for t in $(TESTFILES_SIZES); do \
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echo -n "- with $${t}MB ... "; \
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if ! rr=$$(./md2 t/$${t} -B1 -V$${i}); then \
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echo; \
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echo "SKIPPED!"; \
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echo "$${i};$${t};0" >> $@; \
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echo -n ";0" >> $@; \
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else \
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r=$$(echo $$rr | xargs | sed -e 's/.*took \(.*\) seconds.*/\1/'); \
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echo "$${r}s"; \
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echo "$${i};$${t};$${r}" >> $@; \
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echo -n ";$${r}" >> $@; \
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fi; \
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done; \
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echo "" >> $@; \
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echo "=== done ===";\
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echo;\
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done
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@ -0,0 +1,6 @@
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Implementierung;1;2;5;10;20;50;100
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Implementierung-0;0.092604;0.172133;0.422083;0.845732;1.687540;4.232703;8.501036
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Implementierung-1;0.084314;0.167799;0.431772;0.843568;1.708024;5.208127;10.147011
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Implementierung-2;0.097700;0.203661;0.567091;1.062895;2.141933;5.440520;10.342529
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Implementierung-3;0.099547;0.206932;0.546978;1.017148;2.077730;5.067994;9.962873
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Implementierung-4;0.117680;0.239349;0.616783;1.200482;2.356915;5.856234;11.647842
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@ -8,15 +8,6 @@
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#include <string.h>
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#include <sys/types.h>
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#include "../io.h"
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/**
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* @brief This implementation optimizes small operations and uses SIMD
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*
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* @param _ unused
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* @param filename name of the file to load
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* @param out
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*/
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void md2_hash_1(size_t len, const uint8_t buf[len], uint8_t out[16]);
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void md2_checksum_1(size_t len, uint8_t* buf);
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@ -10,13 +10,6 @@
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#include <sys/types.h>
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#include <unistd.h>
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/**
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* @brief Diese Implementierung benutzt Threads zum Berechnen des Hashs
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*
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* @param len
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* @param buf
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* @param out
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*/
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void md2_hash_3(size_t len, const uint8_t buf[len], uint8_t out[16]);
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#endif // MD2_3_H
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@ -0,0 +1,54 @@
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#ifndef MD2_REF_H
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#define MD2_REF_H
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/***********************************************************
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* WICHTIG:
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* Diese Implementierung wurde nicht von uns geschrieben,
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* sondern zu vergleichszwechen von der Referenz übernommen.
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* Quelle: https://datatracker.ietf.org/doc/html/rfc1319
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**********************************************************/
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#ifndef PROTOTYPES
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#define PROTOTYPES 0
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#endif
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/* POINTER defines a generic pointer type */
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typedef unsigned char *POINTER;
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/* UINT2 defines a two byte word */
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typedef unsigned short int UINT2;
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/* UINT4 defines a four byte word */
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typedef unsigned long int UINT4;
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/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
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If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
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returns an empty list.
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*/
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#if PROTOTYPES
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#define PROTO_LIST(list) list
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#else
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#define PROTO_LIST(list) ()
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#endif
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typedef struct {
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unsigned char state[16]; /* state */
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unsigned char checksum[16]; /* checksum */
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unsigned int count; /* number of bytes, modulo 16 */
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unsigned char buffer[16]; /* input buffer */
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} MD2_CTX;
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void MD2Init PROTO_LIST((MD2_CTX *));
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void MD2Update PROTO_LIST((MD2_CTX *, unsigned char *, unsigned int));
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void MD2Final PROTO_LIST((unsigned char[16], MD2_CTX *));
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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void md2_hash_ref(size_t len, const uint8_t buf[len], uint8_t out[16]);
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#endif // MD2_REF_H
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@ -5,6 +5,7 @@
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#include "../lib/md2_impls/md2_1.h"
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#include "../lib/md2_impls/md2_2.h"
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#include "../lib/md2_impls/md2_3.h"
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#include "../lib/md2_impls/md2_reference/md2_reference.h"
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md2_hash_func md2_hash;
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md2_checksum_func md2_checksum;
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@ -40,6 +41,11 @@ bool md2_choose_implementation(int i) {
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md2_checksum = NULL;
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return true;
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case 4:
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md2_hash = md2_hash_ref;
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md2_checksum = NULL;
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return true;
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default:
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return false;
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}
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@ -0,0 +1,215 @@
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/* MD2C.C - RSA Data Security, Inc., MD2 message-digest algorithm
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*/
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/***********************************************************
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* WICHTIG:
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* Diese Implementierung wurde nicht von uns geschrieben,
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* sondern zu vergleichszwechen von der Referenz übernommen.
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* Quelle: https://datatracker.ietf.org/doc/html/rfc1319
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**********************************************************/
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/* Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All
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rights reserved.
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License to copy and use this software is granted for
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non-commercial Internet Privacy-Enhanced Mail provided that it is
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identified as the "RSA Data Security, Inc. MD2 Message Digest
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Algorithm" in all material mentioning or referencing this software
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or this function.
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RSA Data Security, Inc. makes no representations concerning either
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the merchantability of this software or the suitability of this
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software for any particular purpose. It is provided "as is"
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without express or implied warranty of any kind.
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These notices must be retained in any copies of any part of this
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documentation and/or software.
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*/
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#include "../../../lib/md2_impls/md2_reference/md2_reference.h"
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static void MD2Transform PROTO_LIST((unsigned char[16], unsigned char[16],
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unsigned char[16]));
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static void MD2_memcpy PROTO_LIST((POINTER, POINTER, unsigned int));
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static void MD2_memset PROTO_LIST((POINTER, int, unsigned int));
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/* Permutation of 0..255 constructed from the digits of pi. It gives a
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"random" nonlinear byte substitution operation.
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*/
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static unsigned char PI_SUBST[256] = {
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41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
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19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188, 76,
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130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24, 138,
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23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251, 245, 142,
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187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63, 148, 194, 16,
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137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50, 39, 53, 62,
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204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165, 181, 209, 215,
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94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210, 150, 164, 125, 182,
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118, 252, 107, 226, 156, 116, 4, 241, 69, 157, 112, 89, 100, 113, 135,
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32, 134, 91, 207, 101, 230, 45, 168, 2, 27, 96, 37, 173, 174, 176,
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185, 246, 28, 70, 97, 105, 52, 64, 126, 15, 85, 71, 163, 35, 221,
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81, 175, 58, 195, 92, 249, 206, 186, 197, 234, 38, 44, 83, 13, 110,
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133, 40, 132, 9, 211, 223, 205, 244, 65, 129, 77, 82, 106, 220, 55,
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200, 108, 193, 171, 250, 36, 225, 123, 8, 12, 189, 177, 74, 120, 136,
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149, 139, 227, 99, 232, 109, 233, 203, 213, 254, 59, 0, 29, 57, 242,
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239, 183, 14, 102, 88, 208, 228, 166, 119, 114, 248, 235, 117, 75, 10,
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49, 68, 80, 180, 143, 237, 31, 26, 219, 153, 141, 51, 159, 17, 131,
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20};
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static unsigned char *PADDING[] = {
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(unsigned char *)"",
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(unsigned char *)"\001",
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(unsigned char *)"\002\002",
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(unsigned char *)"\003\003\003",
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(unsigned char *)"\004\004\004\004",
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(unsigned char *)"\005\005\005\005\005",
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(unsigned char *)"\006\006\006\006\006\006",
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(unsigned char *)"\007\007\007\007\007\007\007",
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(unsigned char *)"\010\010\010\010\010\010\010\010",
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(unsigned char *)"\011\011\011\011\011\011\011\011\011",
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(unsigned char *)"\012\012\012\012\012\012\012\012\012\012",
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(unsigned char *)"\013\013\013\013\013\013\013\013\013\013\013",
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(unsigned char *)"\014\014\014\014\014\014\014\014\014\014\014\014",
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(unsigned char *)"\015\015\015\015\015\015\015\015\015\015\015\015\015",
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(unsigned char *)"\016\016\016\016\016\016\016\016\016\016\016\016\016\016",
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(unsigned char
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*)"\017\017\017\017\017\017\017\017\017\017\017\017\017\017\017",
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(unsigned char
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*)"\020\020\020\020\020\020\020\020\020\020\020\020\020\020\020\020"};
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void md2_hash_ref(size_t len, const uint8_t buf[len], uint8_t out[16]) {
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MD2_CTX context;
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MD2Init(&context);
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MD2Update(&context, buf, len);
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MD2Final(out, &context);
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}
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/* MD2 initialization. Begins an MD2 operation, writing a new context.
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*/
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void MD2Init(context) MD2_CTX *context; /* context */
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{
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context->count = 0;
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MD2_memset((POINTER)context->state, 0, sizeof(context->state));
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MD2_memset((POINTER)context->checksum, 0, sizeof(context->checksum));
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}
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/* MD2 block update operation. Continues an MD2 message-digest
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operation, processing another message block, and updating the
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context.
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*/
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void MD2Update(context, input, inputLen) MD2_CTX *context; /* context */
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unsigned char *input; /* input block */
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unsigned int inputLen; /* length of input block */
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{
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unsigned int i, index, partLen;
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/* Update number of bytes mod 16 */
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index = context->count;
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context->count = (index + inputLen) & 0xf;
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partLen = 16 - index;
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/* Transform as many times as possible.
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*/
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if (inputLen >= partLen) {
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MD2_memcpy((POINTER)&context->buffer[index], (POINTER)input, partLen);
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MD2Transform(context->state, context->checksum, context->buffer);
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for (i = partLen; i + 15 < inputLen; i += 16)
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MD2Transform(context->state, context->checksum, &input[i]);
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index = 0;
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} else
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i = 0;
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/* Buffer remaining input */
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MD2_memcpy((POINTER)&context->buffer[index], (POINTER)&input[i],
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inputLen - i);
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}
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/* MD2 finalization. Ends an MD2 message-digest operation, writing the
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message digest and zeroizing the context.
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*/
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void MD2Final(digest, context)
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unsigned char digest[16]; /* message digest */
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MD2_CTX *context; /* context */
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{
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unsigned int index, padLen;
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/* Pad out to multiple of 16.
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*/
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index = context->count;
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padLen = 16 - index;
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MD2Update(context, PADDING[padLen], padLen);
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/* Extend with checksum */
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MD2Update(context, context->checksum, 16);
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/* Store state in digest */
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MD2_memcpy((POINTER)digest, (POINTER)context->state, 16);
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/* Zeroize sensitive information.
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*/
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MD2_memset((POINTER)context, 0, sizeof(*context));
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}
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/* MD2 basic transformation. Transforms state and updates checksum
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based on block.
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*/
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static void MD2Transform(state, checksum, block) unsigned char state[16];
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unsigned char checksum[16];
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unsigned char block[16];
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{
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unsigned int i, j, t;
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unsigned char x[48];
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/* Form encryption block from state, block, state ^ block.
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*/
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MD2_memcpy((POINTER)x, (POINTER)state, 16);
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MD2_memcpy((POINTER)x + 16, (POINTER)block, 16);
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for (i = 0; i < 16; i++) x[i + 32] = state[i] ^ block[i];
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/* Encrypt block (18 rounds).
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*/
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t = 0;
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for (i = 0; i < 18; i++) {
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for (j = 0; j < 48; j++) t = x[j] ^= PI_SUBST[t];
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t = (t + i) & 0xff;
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}
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/* Save new state */
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MD2_memcpy((POINTER)state, (POINTER)x, 16);
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/* Update checksum.
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*/
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t = checksum[15];
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for (i = 0; i < 16; i++) t = checksum[i] ^= PI_SUBST[block[i] ^ t];
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/* Zeroize sensitive information.
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*/
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MD2_memset((POINTER)x, 0, sizeof(x));
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}
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/* Note: Replace "for loop" with standard memcpy if possible.
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*/
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static void MD2_memcpy(output, input, len) POINTER output;
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POINTER input;
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unsigned int len;
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{
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unsigned int i;
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for (i = 0; i < len; i++) output[i] = input[i];
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}
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/* Note: Replace "for loop" with standard memset if possible.
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*/
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static void MD2_memset(output, value, len) POINTER output;
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int value;
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unsigned int len;
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{
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unsigned int i;
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for (i = 0; i < len; i++) ((char *)output)[i] = (char)value;
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}
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Reference in New Issue