AES_RETURN aes_decrypt_key192(const unsigned char *key, aes_decrypt_ctx cx[1])
{ uint_32t ss[7];
#if defined( d_vars )
d_vars;
#endif
cx->ks[v(48,(0))] = ss[0] = word_in(key, 0);
cx->ks[v(48,(1))] = ss[1] = word_in(key, 1);
cx->ks[v(48,(2))] = ss[2] = word_in(key, 2);
cx->ks[v(48,(3))] = ss[3] = word_in(key, 3);
#if DEC_UNROLL == NONE
cx->ks[v(48,(4))] = ss[4] = word_in(key, 4);
cx->ks[v(48,(5))] = ss[5] = word_in(key, 5);
{ uint_32t i;
for(i = 0; i < 7; ++i)
k6e(cx->ks, i);
k6ef(cx->ks, 7);
#if !(DEC_ROUND == NO_TABLES)
for(i = N_COLS; i < 12 * N_COLS; ++i)
cx->ks[i] = inv_mcol(cx->ks[i]);
#endif
}
#else
cx->ks[v(48,(4))] = ff(ss[4] = word_in(key, 4));
cx->ks[v(48,(5))] = ff(ss[5] = word_in(key, 5));
kdf6(cx->ks, 0); kd6(cx->ks, 1);
kd6(cx->ks, 2); kd6(cx->ks, 3);
kd6(cx->ks, 4); kd6(cx->ks, 5);
kd6(cx->ks, 6); kdl6(cx->ks, 7);
#endif
cx->inf.l = 0;
cx->inf.b[0] = 12 * 16;
#ifdef USE_VIA_ACE_IF_PRESENT
if(VIA_ACE_AVAILABLE)
cx->inf.b[1] = 0xff;
#endif
#if defined( AES_ERR_CHK )
return EXIT_SUCCESS;
#endif
}
static void
aes_decrypt_key192(const unsigned char *key, uint32_t rk[])
{
uint32_t ss[7];
#if defined(d_vars)
d_vars;
#endif
rk[v(48, (0))] = ss[0] = word_in(key, 0);
rk[v(48, (1))] = ss[1] = word_in(key, 1);
rk[v(48, (2))] = ss[2] = word_in(key, 2);
rk[v(48, (3))] = ss[3] = word_in(key, 3);
#ifdef DEC_KS_UNROLL
ss[4] = word_in(key, 4);
rk[v(48, (4))] = ff(ss[4]);
ss[5] = word_in(key, 5);
rk[v(48, (5))] = ff(ss[5]);
kdf6(rk, 0); kd6(rk, 1);
kd6(rk, 2); kd6(rk, 3);
kd6(rk, 4); kd6(rk, 5);
kd6(rk, 6); kdl6(rk, 7);
#else
rk[v(48, (4))] = ss[4] = word_in(key, 4);
rk[v(48, (5))] = ss[5] = word_in(key, 5);
{
uint32_t i;
for (i = 0; i < 7; ++i)
k6e(rk, i);
k6ef(rk, 7);
#if !(DEC_ROUND == NO_TABLES)
for (i = MAX_AES_NB; i < 12 * MAX_AES_NB; ++i)
rk[i] = inv_mcol(rk[i]);
#endif
}
#endif
}