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aria: clean up interface of internal macros

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This commit is contained in:
Manuel Pégourié-Gonnard 2018-02-20 13:59:05 +01:00
parent a6d639e553
commit e1ad7491c5
1 changed files with 10 additions and 19 deletions
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29
library/aria.c
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@ -78,9 +78,9 @@
// Affine Transform A
// (ra, rb, rc, rd) = state in/out
// (ta, tb, tc) = temporary variables
#define ARIA_A( ra, rb, rc, rd, ta, tb, tc ) { \
#define ARIA_A( ra, rb, rc, rd ) { \
uint32_t ta, tb, tc; \
ta = rb; \
rb = ra; \
ra = ARIA_FLIP1( ta ); \
@ -105,13 +105,13 @@
/* ARIA Round function ( Substitution Layer SLx + Affine Transform A )
* (ra, rb, rc, rd) = state in/out
* (sa, sb, sc, sd) = 256 8-bit S-Boxes (see below)
* (ta, tb, tc) = temporary variables
*
* By passing sb1, sb2, is1, is2 as S-Boxes you get SL1-then-A.
* By passing is1, is2, sb1, sb2 as S-Boxes you get SL2-then-A.
*/
#define ARIA_SLA( ra, rb, rc, rd, sa, sb, sc, sd, ta, tb, tc ) { \
#define ARIA_SLA( ra, rb, rc, rd, sa, sb, sc, sd ) { \
uint32_t ta, tb, tc; \
ta = ( (uint32_t) sc[(rb >> 16) & 0xFF]) ^ \
(((uint32_t) sd[ rb >> 24]) << 8) ^ \
(((uint32_t) sa[ rb & 0xFF]) << 16) ^ \
@ -257,14 +257,13 @@ static void aria_fo_xor( uint32_t r[4],
const uint32_t p[4], const uint32_t k[4], const uint32_t x[4] )
{
uint32_t a, b, c, d;
uint32_t t, u, v;
a = p[0] ^ k[0];
b = p[1] ^ k[1];
c = p[2] ^ k[2];
d = p[3] ^ k[3];
ARIA_SLA( a, b, c, d, aria_sb1, aria_sb2, aria_is1, aria_is2, t, u, v );
ARIA_SLA( a, b, c, d, aria_sb1, aria_sb2, aria_is1, aria_is2 );
r[0] = a ^ x[0];
r[1] = b ^ x[1];
@ -278,14 +277,13 @@ static void aria_fe_xor(uint32_t r[4],
const uint32_t p[4], const uint32_t k[4], const uint32_t x[4] )
{
uint32_t a, b, c, d;
uint32_t t, u, v;
a = p[0] ^ k[0];
b = p[1] ^ k[1];
c = p[2] ^ k[2];
d = p[3] ^ k[3];
ARIA_SLA( a, b, c, d, aria_is1, aria_is2, aria_sb1, aria_sb2, t, u, v );
ARIA_SLA( a, b, c, d, aria_is1, aria_is2, aria_sb1, aria_sb2 );
r[0] = a ^ x[0];
r[1] = b ^ x[1];
@ -385,7 +383,6 @@ int mbedtls_aria_setkey_dec(mbedtls_aria_context *ctx,
const unsigned char *key, unsigned int keybits)
{
int i, j, k, ret;
uint32_t t, u, v;
ret = mbedtls_aria_setkey_enc( ctx, key, keybits );
if( ret != 0 )
@ -396,7 +393,7 @@ int mbedtls_aria_setkey_dec(mbedtls_aria_context *ctx,
{
for( k = 0; k < 4; k++ )
{
t = ctx->rk[i][k];
uint32_t t = ctx->rk[i][k];
ctx->rk[i][k] = ctx->rk[j][k];
ctx->rk[j][k] = t;
}
@ -404,10 +401,7 @@ int mbedtls_aria_setkey_dec(mbedtls_aria_context *ctx,
// apply affine transform to middle keys
for (i = 1; i < ctx->nr; i++ )
{
ARIA_A( ctx->rk[i][0], ctx->rk[i][1], ctx->rk[i][2], ctx->rk[i][3],
t, u, v );
}
ARIA_A( ctx->rk[i][0], ctx->rk[i][1], ctx->rk[i][2], ctx->rk[i][3] );
return 0;
}
@ -422,7 +416,6 @@ int mbedtls_aria_crypt_ecb( mbedtls_aria_context *ctx,
int i;
uint32_t a, b, c, d;
uint32_t t, u, v;
( (void) mode );
@ -439,8 +432,7 @@ int mbedtls_aria_crypt_ecb( mbedtls_aria_context *ctx,
c ^= ctx->rk[i][2];
d ^= ctx->rk[i][3];
i++;
ARIA_SLA( a, b, c, d,
aria_sb1, aria_sb2, aria_is1, aria_is2, t, u, v );
ARIA_SLA( a, b, c, d, aria_sb1, aria_sb2, aria_is1, aria_is2 );
a ^= ctx->rk[i][0];
b ^= ctx->rk[i][1];
@ -450,8 +442,7 @@ int mbedtls_aria_crypt_ecb( mbedtls_aria_context *ctx,
if (i >= ctx->nr)
break;
ARIA_SLA( a, b, c, d,
aria_is1, aria_is2, aria_sb1, aria_sb2, t, u, v );
ARIA_SLA( a, b, c, d, aria_is1, aria_is2, aria_sb1, aria_sb2 );
}
// final substitution