/* bmw_large.c */
/*
This file is part of the AVR-Crypto-Lib.
- Copyright (C) 2009 Daniel Otte (daniel.otte@rub.de)
+ Copyright (C) 2006-2015 Daniel Otte (bg@nerilex.org)
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
/*
* \file bmw_large.c
* \author Daniel Otte
- * \email daniel.otte@rub.de
+ * \email bg@nerilex.org
* \date 2009-04-27
* \license GPLv3 or later
- *
+ *
*/
#include <stdint.h>
#include <avr/pgmspace.h>
#include "bmw_large.h"
-#define SHL64(a,n) ((a)<<(n))
-#define SHR64(a,n) ((a)>>(n))
-#define ROTL64(a,n) (((a)<<(n))|((a)>>(64-(n))))
-#define ROTR64(a,n) (((a)>>(n))|((a)<<(64-(n))))
+#define SHL64(a,n) shiftl64(a,n)
+#define SHR64(a,n) shiftr64(a,n)
+#define ROTL64(a,n) rotl64(a,n)
+#define ROTR64(a,n) rotr64(a,n)
+
+#define TWEAK 1
+#define BUG24 0
+#define F0_HACK 2
+#define DEBUG 0
-#define BUG24 0
-#define F0_HACK 1
-#define DEBUG 0
#if DEBUG
#include "cli.h"
-
- void ctx_dump(const bmw_large_ctx_t* ctx){
+
+ void ctx_dump(const bmw_large_ctx_t *ctx){
uint8_t i;
cli_putstr_P(PSTR("\r\n==== ctx dump ===="));
for(i=0; i<16;++i){
cli_putstr_P(PSTR("\r\n counter = "));
cli_hexdump(&(ctx->counter), 4);
}
-
- void dump_x(const uint64_t* q, uint8_t elements, char x){
+
+ void dump_x(const uint64_t *q, uint8_t elements, char x){
uint8_t i;
cli_putstr_P(PSTR("\r\n==== "));
cli_putc(x);
#define dump_x(a,b,c)
#endif
+static
+uint64_t rotl64(uint64_t a, uint8_t r){
+ return (a<<r)|(a>>(64-r));
+}
+
+static
+uint64_t rotr64(uint64_t a, uint8_t r){
+ return (a>>r)|(a<<(64-r));
+}
+
+static
+uint64_t shiftl64(uint64_t a, uint8_t r){
+ return (a<<r);
+}
+
+static
+uint64_t shiftr64(uint64_t a, uint8_t r){
+ return (a>>r);
+}
+
+static
uint64_t bmw_large_s0(uint64_t x){
uint64_t r;
r = SHR64(x, 1)
^ SHL64(x, 3)
^ ROTL64(x, 4)
^ ROTR64(x, 64-37);
- return r;
+ return r;
}
+static
uint64_t bmw_large_s1(uint64_t x){
uint64_t r;
r = SHR64(x, 1)
^ SHL64(x, 2)
^ ROTL64(x,13)
^ ROTR64(x,64-43);
- return r;
+ return r;
}
+static
uint64_t bmw_large_s2(uint64_t x){
uint64_t r;
r = SHR64(x, 2)
^ SHL64(x, 1)
^ ROTL64(x, 19)
^ ROTR64(x, 64-53);
- return r;
+ return r;
}
+static
uint64_t bmw_large_s3(uint64_t x){
uint64_t r;
r = SHR64(x, 2)
^ SHL64(x, 2)
^ ROTL64(x, 28)
^ ROTR64(x, 64-59);
- return r;
+ return r;
}
+static
uint64_t bmw_large_s4(uint64_t x){
uint64_t r;
r = SHR64(x, 1)
^ x;
- return r;
+ return r;
}
+static
uint64_t bmw_large_s5(uint64_t x){
uint64_t r;
r = SHR64(x, 2)
^ x;
- return r;
+ return r;
}
+static
uint64_t bmw_large_r1(uint64_t x){
uint64_t r;
r = ROTL64(x, 5);
- return r;
+ return r;
}
+static
uint64_t bmw_large_r2(uint64_t x){
uint64_t r;
r = ROTL64(x, 11);
- return r;
+ return r;
}
+static
uint64_t bmw_large_r3(uint64_t x){
uint64_t r;
r = ROTL64(x, 27);
- return r;
+ return r;
}
+static
uint64_t bmw_large_r4(uint64_t x){
uint64_t r;
r = ROTL64(x, 32);
- return r;
+ return r;
}
+static
uint64_t bmw_large_r5(uint64_t x){
uint64_t r;
r = ROTR64(x, 64-37);
- return r;
+ return r;
}
+static
uint64_t bmw_large_r6(uint64_t x){
uint64_t r;
r = ROTR64(x, 64-43);
- return r;
+ return r;
}
+static
uint64_t bmw_large_r7(uint64_t x){
uint64_t r;
r = ROTR64(x, 64-53);
- return r;
+ return r;
}
/*
#define K 0x0555555555555555LL
#define MASK 0xFFFFFFFFFFFFFFFFLL
static
-uint64_t k_lut[] PROGMEM = {
- 16LL*K, 17LL*K, 18LL*K, 19LL*K,
+const uint64_t k_lut[] PROGMEM = {
+ 16LL*K, 17LL*K, 18LL*K, 19LL*K,
20LL*K, 21LL*K, 22LL*K, 23LL*K,
24LL*K, 25LL*K, 26LL*K, 27LL*K,
28LL*K, 29LL*K, 30LL*K, 31LL*K };
-*/
+*/
/* the same as above but precomputed to avoid compiler warnings */
static
-uint64_t k_lut[] PROGMEM = {
+const uint64_t k_lut[] PROGMEM = {
0x5555555555555550LL, 0x5aaaaaaaaaaaaaa5LL, 0x5ffffffffffffffaLL,
0x655555555555554fLL, 0x6aaaaaaaaaaaaaa4LL, 0x6ffffffffffffff9LL,
0x755555555555554eLL, 0x7aaaaaaaaaaaaaa3LL, 0x7ffffffffffffff8LL,
0x955555555555554cLL, 0x9aaaaaaaaaaaaaa1LL, 0x9ffffffffffffff6LL,
0xa55555555555554bLL };
-uint64_t bmw_large_expand1(uint8_t j, const uint64_t* q, const void* m){
+static
+uint64_t bmw_large_expand1(uint8_t j, const uint64_t *q, const void *m, const void *h){
uint64_t(*s[])(uint64_t) = {bmw_large_s1, bmw_large_s2, bmw_large_s3, bmw_large_s0};
+ uint64_t a = 0;
union{
uint64_t v64;
uint32_t v32[2];
r.v32[0] = pgm_read_dword(((uint8_t*)k_lut+8*j));
r.v32[1] = pgm_read_dword(((uint8_t*)k_lut+8*j+4));
for(i=0; i<16; ++i){
- r.v64 += s[i%4](q[j+i]);
+ a += s[i%4](q[j+i]);
}
- r.v64 += ((uint64_t*)m)[j];
- r.v64 += ((uint64_t*)m)[j+3];
- r.v64 -= ((uint64_t*)m)[j+10];
- return r.v64;
+#if TWEAK
+ a += ( ROTL64(((uint64_t*)m)[(j)&0xf], ((j+ 0)&0xf)+1)
+ + ROTL64(((uint64_t*)m)[(j+3)&0xf], ((j+ 3)&0xf)+1)
+ + r.v64
+ - ROTL64(((uint64_t*)m)[(j+10)&0xf],((j+10)&0xf)+1)
+ ) ^ ((uint64_t*)h)[(j+7)&0xf];
+#else
+ a += ((uint64_t*)m)[j&0xf];
+ a += ((uint64_t*)m)[(j+3)&0xf];
+ a -= ((uint64_t*)m)[(j+10)&0xf];
+ a += r.v64;
+#endif
+ return a;
}
-uint64_t bmw_large_expand2(uint8_t j, const uint64_t* q, const void* m){
+static
+uint64_t bmw_large_expand2(uint8_t j, const uint64_t *q, const void *m, const void *h){
uint64_t(*rf[])(uint64_t) = {bmw_large_r1, bmw_large_r2, bmw_large_r3,
bmw_large_r4, bmw_large_r5, bmw_large_r6,
bmw_large_r7};
+ uint64_t a=0;
union{
uint64_t v64;
uint32_t v32[2];
r.v32[0] = pgm_read_dword(((uint8_t*)k_lut+8*j));
r.v32[1] = pgm_read_dword(((uint8_t*)k_lut+8*j+4));
for(i=0; i<14; i+=2){
- r.v64 += q[j+i];
+ a += q[j+i];
}
for(i=0; i<14; i+=2){
- r.v64 += rf[i/2](q[j+i+1]);
+ a += rf[i/2](q[j+i+1]);
+ }
+#if TWEAK
+ a += bmw_large_s4(q[j+14]);
+ a += bmw_large_s5(q[j+15]);
+#else
+ a += bmw_large_s5(q[j+14]);
+ a += bmw_large_s4(q[j+15]);
+#endif
+#if TWEAK
+ /*
+ if(j==(22-16)){
+ uint64_t t;
+ cli_putstr_P(PSTR("\n+++++++++ expand_2 ++++++++++++"));
+ dump_x(&a, 1, 'a');
+ dump_x(&r, 1, 'r');
+ t=ROTL64(((uint64_t*)m)[j], ((j+ 0)&0xf)+1);
+ dump_x(&t, 1, '0');
+ t=ROTL64(((uint64_t*)m)[j], ((j+ 3)&0xf)+1);
+ dump_x(&t, 1, '0');
+ t=ROTL64(((uint64_t*)m)[j], ((j+ 0)&0xf)+1);
+ dump_x(&t, 1, '0');
+
+ }
+ */
+ a += ( ROTL64(((uint64_t*)m)[(j)&0xf], ((j+ 0)&0xf)+1)
+ + ROTL64(((uint64_t*)m)[(j+3)&0xf], ((j+ 3)&0xf)+1)
+ + r.v64
+ - ROTL64(((uint64_t*)m)[(j+10)&0xf],((j+10)&0xf)+1)
+ ) ^ ((uint64_t*)h)[(j+7)&0xf];
+#else
+ a += ((uint64_t*)m)[j&0xf];
+ a += ((uint64_t*)m)[(j+3)&0xf];
+ a -= ((uint64_t*)m)[(j+10)&0xf];
+ a += r.v64;
+#endif
+ return a;
+}
+
+#if F0_HACK==2
+/* to understand this implementation take a look at f0-opt-table.txt */
+static const uint16_t hack_table[5] PROGMEM = { 0x0311, 0xDDB3, 0x2A79, 0x07AA, 0x51C2 };
+static const uint8_t offset_table[5] PROGMEM = { 4+16, 6+16, 9+16, 12+16, 13+16 };
+
+
+static
+void bmw_large_f0(uint64_t *q, const uint64_t *h, const void *m){
+ uint16_t hack_reg;
+ uint8_t i,j,c;
+ uint64_t(*s[])(uint64_t)={ bmw_large_s0, bmw_large_s1, bmw_large_s2,
+ bmw_large_s3, bmw_large_s4 };
+ for(i=0; i<16; ++i){
+ ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
+ }
+ dump_x(h, 16, 'T');
+ memset(q, 0, 8*16);
+ c=4;
+ do{
+ i=15;
+ j=pgm_read_byte(offset_table+c);
+ hack_reg=pgm_read_word(&(hack_table[c]));
+ do{
+ if(hack_reg&1){
+ q[i]-= h[j&15];
+ }else{
+ q[i]+= h[j&15];
+ }
+ --j;
+ hack_reg>>= 1;
+ }while(i--!=0);
+ }while(c--!=0);
+ dump_x(q, 16, 'W');
+ for(i=0; i<16; ++i){
+ q[i] = s[i%5](q[i]);
+ }
+#if TWEAK
+ for(i=0; i<16; ++i){
+ ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
}
- r.v64 += bmw_large_s5(q[j+14]);
- r.v64 += bmw_large_s4(q[j+15]);
- r.v64 += ((uint64_t*)m)[j];
- r.v64 += ((uint64_t*)m)[(j+3)%16];
- r.v64 -= ((uint64_t*)m)[(j+10)%16];
- return r.v64;
+ for(i=0; i<16; ++i){
+ q[i] += h[(i+1)&0xf];
+ }
+#endif /* TWEAK */
}
+#endif /* F0_HACK==2 */
-#if F0_HACK
+#if F0_HACK==1
static
-uint8_t f0_lut[] PROGMEM ={
+const uint8_t f0_lut[] PROGMEM ={
5<<1, ( 7<<1)+1, (10<<1)+0, (13<<1)+0, (14<<1)+0,
6<<1, ( 8<<1)+1, (11<<1)+0, (14<<1)+0, (15<<1)+1,
0<<1, ( 7<<1)+0, ( 9<<1)+0, (12<<1)+1, (15<<1)+0,
0<<1, ( 1<<1)+1, ( 8<<1)+0, (10<<1)+1, (13<<1)+0,
1<<1, ( 2<<1)+0, ( 9<<1)+0, (11<<1)+1, (14<<1)+1,
3<<1, ( 2<<1)+1, (10<<1)+0, (12<<1)+1, (15<<1)+0,
- 4<<1, ( 0<<1)+1, ( 3<<1)+1, (11<<1)+1, (13<<1)+0,
+ 4<<1, ( 0<<1)+1, ( 3<<1)+1, (11<<1)+1, (13<<1)+0,
1<<1, ( 4<<1)+1, ( 5<<1)+1, (12<<1)+1, (14<<1)+1,
2<<1, ( 5<<1)+1, ( 6<<1)+1, (13<<1)+0, (15<<1)+1,
0<<1, ( 3<<1)+1, ( 6<<1)+0, ( 7<<1)+1, (14<<1)+0,
12<<1, ( 4<<1)+1, ( 6<<1)+1, ( 9<<1)+1, (13<<1)+0
};
-void bmw_large_f0(uint64_t* q, uint64_t* h, const void* m){
+static
+void bmw_large_f0(uint64_t *q, const uint64_t *h, const void *m){
uint8_t i,j=-1,v,sign,l=0;
uint64_t(*s[])(uint64_t)={ bmw_large_s0, bmw_large_s1, bmw_large_s2,
bmw_large_s3, bmw_large_s4 };
for(i=0; i<16; ++i){
- h[i] ^= ((uint64_t*)m)[i];
+ ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
}
dump_x(h, 16, 'T');
// memset(q, 0, 4*16);
dump_x(q, 16, 'W');
for(i=0; i<16; ++i){
q[i] = s[i%5](q[i]);
- }
+ }
+#if TWEAK
+ for(i=0; i<16; ++i){
+ ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
+ }
+ for(i=0; i<16; ++i){
+ q[i] += h[(i+1)&0xf];
+ }
+#endif /* TWEAK */
}
+#endif /* F0_HACK==1 */
-#else
-void bmw_large_f0(uint64_t* q, uint64_t* h, const void* m){
+#if F0_HACK==0
+static
+void bmw_large_f0(uint64_t *q, const uint64_t *h, const void *m){
uint8_t i;
uint64_t(*s[])(uint64_t)={ bmw_large_s0, bmw_large_s1, bmw_large_s2,
bmw_large_s3, bmw_large_s4 };
for(i=0; i<16; ++i){
- h[i] ^= ((uint64_t*)m)[i];
+ ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
}
- dump_x(t, 16, 'T');
+// dump_x(t, 16, 'T');
q[ 0] = (h[ 5] - h[ 7] + h[10] + h[13] + h[14]);
q[ 1] = (h[ 6] - h[ 8] + h[11] + h[14] - h[15]);
q[ 2] = (h[ 0] + h[ 7] + h[ 9] - h[12] + h[15]);
q[ 3] = (h[ 0] - h[ 1] + h[ 8] - h[10] + h[13]);
q[ 4] = (h[ 1] + h[ 2] + h[ 9] - h[11] - h[14]);
q[ 5] = (h[ 3] - h[ 2] + h[10] - h[12] + h[15]);
- q[ 6] = (h[ 4] - h[ 0] - h[ 3] - h[11] + h[13]);
+ q[ 6] = (h[ 4] - h[ 0] - h[ 3] - h[11] + h[13]);
q[ 7] = (h[ 1] - h[ 4] - h[ 5] - h[12] - h[14]);
q[ 8] = (h[ 2] - h[ 5] - h[ 6] + h[13] - h[15]);
q[ 9] = (h[ 0] - h[ 3] + h[ 6] - h[ 7] + h[14]);
q[12] = (h[ 1] + h[ 3] - h[ 6] - h[ 9] + h[10]);
q[13] = (h[ 2] + h[ 4] + h[ 7] + h[10] + h[11]);
q[14] = (h[ 3] - h[ 5] + h[ 8] - h[11] - h[12]);
- q[15] = (h[12] - h[ 4] - h[ 6] - h[ 9] + h[13]);
+ q[15] = (h[12] - h[ 4] - h[ 6] - h[ 9] + h[13]);
dump_x(q, 16, 'W');
for(i=0; i<16; ++i){
q[i] = s[i%5](q[i]);
- }
+ }
+#if TWEAK
+ for(i=0; i<16; ++i){
+ ((uint64_t*)h)[i] ^= ((uint64_t*)m)[i];
+ }
+ for(i=0; i<16; ++i){
+ q[i] += h[(i+1)&0xf];
+ }
+#endif /* TWEAK */
+
}
-#endif
+#endif /* F0_HACK==0 */
-void bmw_large_f1(uint64_t* q, const void* m){
+static
+void bmw_large_f1(uint64_t *q, const void *m, const uint64_t *h){
uint8_t i;
- q[16] = bmw_large_expand1(0, q, m);
- q[17] = bmw_large_expand1(1, q, m);
+ q[16] = bmw_large_expand1(0, q, m, h);
+ q[17] = bmw_large_expand1(1, q, m, h);
for(i=2; i<16; ++i){
- q[16+i] = bmw_large_expand2(i, q, m);
+ q[16+i] = bmw_large_expand2(i, q, m, h);
}
}
-void bmw_large_f2(uint64_t* h, const uint64_t* q, const void* m){
+static
+void bmw_large_f2(uint64_t *h, const uint64_t *q, const void *m){
uint64_t xl=0, xh;
uint8_t i;
for(i=16;i<24;++i){
for(i=24;i<32;++i){
xh ^= q[i];
}
-#if DEBUG
+#if DEBUG
cli_putstr_P(PSTR("\r\n XL = "));
cli_hexdump_rev(&xl, 4);
cli_putstr_P(PSTR("\r\n XH = "));
h[15] += SHR64(xl, 2) ^ q[22] ^ q[15];
}
-void bmw_large_nextBlock(bmw_large_ctx_t* ctx, const void* block){
+void bmw_large_nextBlock(bmw_large_ctx_t *ctx, const void *block){
uint64_t q[32];
dump_x(block, 16, 'M');
bmw_large_f0(q, ctx->h, block);
dump_x(q, 16, 'Q');
- bmw_large_f1(q, block);
+ bmw_large_f1(q, block, ctx->h);
dump_x(q, 32, 'Q');
bmw_large_f2(ctx->h, q, block);
ctx->counter += 1;
ctx_dump(ctx);
}
-void bmw_large_lastBlock(bmw_large_ctx_t* ctx, const void* block, uint16_t length_b){
- uint8_t buffer[128];
+void bmw_large_lastBlock(bmw_large_ctx_t *ctx, const void *block, uint16_t length_b){
+ union {
+ uint8_t v8[128];
+ uint64_t v64[ 16];
+ } buffer;
while(length_b >= BMW_LARGE_BLOCKSIZE){
bmw_large_nextBlock(ctx, block);
length_b -= BMW_LARGE_BLOCKSIZE;
block = (uint8_t*)block + BMW_LARGE_BLOCKSIZE_B;
}
- memset(buffer, 0, 128);
- memcpy(buffer, block, (length_b+7)/8);
- buffer[length_b>>3] |= 0x80 >> (length_b&0x07);
+ memset(buffer.v8, 0, 128);
+ memcpy(buffer.v8, block, (length_b+7)/8);
+ buffer.v8[length_b>>3] |= 0x80 >> (length_b&0x07);
if(length_b+1>128*8-64){
- bmw_large_nextBlock(ctx, buffer);
- memset(buffer, 0, 128-8);
+ bmw_large_nextBlock(ctx, buffer.v8);
+ memset(buffer.v8, 0, 128-8);
ctx->counter -= 1;
}
- *((uint64_t*)&(buffer[128-8])) = (uint64_t)(ctx->counter*1024LL)+(uint64_t)length_b;
- bmw_large_nextBlock(ctx, buffer);
+ buffer.v64[15] = (uint64_t)(ctx->counter*1024LL)+(uint64_t)length_b;
+ bmw_large_nextBlock(ctx, buffer.v8);
+#if TWEAK
+ uint8_t i;
+ uint64_t q[32];
+ memset(buffer.v8, 0xaa, 128);
+ for(i=0; i<16; ++i){
+ buffer.v8[8*i] = i + 0xa0;
+ }
+ bmw_large_f0(q, buffer.v64, ctx->h);
+ bmw_large_f1(q, ctx->h, buffer.v64);
+ bmw_large_f2(buffer.v64, q, ctx->h);
+ memcpy(ctx->h, buffer.v8, 128);
+#endif
}
-void bmw384_init(bmw384_ctx_t* ctx){
+void bmw384_init(bmw384_ctx_t *ctx){
uint8_t i;
ctx->h[0] = 0x0001020304050607LL;
for(i=1; i<16; ++i){
ctx->h[i] = ctx->h[i-1]+ 0x0808080808080808LL;
}
-#if BUG24
+#if BUG24
ctx->h[6] = 0x3031323324353637LL;
#endif
ctx->counter=0;
ctx_dump(ctx);
}
-void bmw512_init(bmw512_ctx_t* ctx){
+void bmw512_init(bmw512_ctx_t *ctx){
uint8_t i;
ctx->h[0] = 0x8081828384858687LL;
for(i=1; i<16; ++i){
ctx_dump(ctx);
}
-void bmw384_nextBlock(bmw384_ctx_t* ctx, const void* block){
+void bmw384_nextBlock(bmw384_ctx_t *ctx, const void *block){
bmw_large_nextBlock(ctx, block);
}
-void bmw512_nextBlock(bmw512_ctx_t* ctx, const void* block){
+void bmw512_nextBlock(bmw512_ctx_t *ctx, const void *block){
bmw_large_nextBlock(ctx, block);
}
-void bmw384_lastBlock(bmw384_ctx_t* ctx, const void* block, uint16_t length_b){
+void bmw384_lastBlock(bmw384_ctx_t *ctx, const void *block, uint16_t length_b){
bmw_large_lastBlock(ctx, block, length_b);
}
-void bmw512_lastBlock(bmw512_ctx_t* ctx, const void* block, uint16_t length_b){
+void bmw512_lastBlock(bmw512_ctx_t *ctx, const void *block, uint16_t length_b){
bmw_large_lastBlock(ctx, block, length_b);
}
-void bmw384_ctx2hash(void* dest, const bmw384_ctx_t* ctx){
+void bmw384_ctx2hash(void *dest, const bmw384_ctx_t *ctx){
memcpy(dest, &(ctx->h[10]), 384/8);
}
-void bmw512_ctx2hash(void* dest, const bmw512_ctx_t* ctx){
+void bmw512_ctx2hash(void *dest, const bmw512_ctx_t *ctx){
memcpy(dest, &(ctx->h[8]), 512/8);
}
-void bmw384(void* dest, const void* msg, uint32_t length_b){
+void bmw384(void *dest, const void *msg, uint32_t length_b){
bmw_large_ctx_t ctx;
bmw384_init(&ctx);
while(length_b>=BMW_LARGE_BLOCKSIZE){
bmw384_ctx2hash(dest, &ctx);
}
-void bmw512(void* dest, const void* msg, uint32_t length_b){
+void bmw512(void *dest, const void *msg, uint32_t length_b){
bmw_large_ctx_t ctx;
bmw512_init(&ctx);
while(length_b>=BMW_LARGE_BLOCKSIZE){
projects / avr-crypto-lib.git / blobdiff