void rijndaelDecrypt_Final(const u32 rk[/*44*/], u8 pt[16], int rank)
{
//printf("In AES final thread\n");
float tempArray[4];
int i = 0;
u32 s[4], t0 = 0, t1 = 0, t2 = 0, t3 = 0;
int Nr = 10;
int * s_sign = (int*)s;
MPI_Recv(s_sign, 4, MPI_INT, rank - 1, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
ROUND(9, &t0, &t1, &t2, &t3, s[0], s[1], s[2], s[3], rk);
/*
* apply last round and
* map cipher state to byte array block:
*/
rk += Nr << 2;
s[0] = TD41(t0) ^ TD42(t3) ^ TD43(t2) ^ TD44(t1) ^ rk[0];
PUTU32(pt , s[0]);
s[1] = TD41(t1) ^ TD42(t0) ^ TD43(t3) ^ TD44(t2) ^ rk[1];
PUTU32(pt + 4, s[1]);
s[2] = TD41(t2) ^ TD42(t1) ^ TD43(t0) ^ TD44(t3) ^ rk[2];
PUTU32(pt + 8, s[2]);
s[3] = TD41(t3) ^ TD42(t2) ^ TD43(t1) ^ TD44(t0) ^ rk[3];
PUTU32(pt + 12, s[3]);
for(i=0; i <4; i++)
{
union {
float f;
unsigned char b[4];
} u;
u.b[3] = pt[4*i+0];
u.b[2] = pt[4*i+1];
u.b[1] = pt[4*i+2];
u.b[0] = pt[4*i+3];
tempArray[i] = u.f;
//printf("%f ",tempArray[i]);
}
//printf("\n");
//for(i = 1; i <= 4; i++)
//printf("Sent the values to %d\n", rank + 1);
MPI_Send(tempArray, 4, MPI_FLOAT, rank + 1, 0, MPI_COMM_WORLD);
}
void rijndaelDecrypt_Final(const u32 rk[/*44*/], u8 pt[16], int rank)
{
u32 s[4], t0 = 0, t1 = 0, t2 = 0, t3 = 0;
int Nr = 10;
int * s_sign = (int*)s;
MPI_Recv(s_sign, 4, MPI_INT, rank - 1, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
//printf("read:rank %d val: %#x,%#x,%#x,%#x\n",rank,s_sign[0],s_sign[1],s_sign[2],s_sign[3]);
ROUND(9, &t0, &t1, &t2, &t3, s[0], s[1], s[2], s[3], rk);
/*
* apply last round and
* map cipher state to byte array block:
*/
rk += Nr << 2;
s[0] = TD41(t0) ^ TD42(t3) ^ TD43(t2) ^ TD44(t1) ^ rk[0];
PUTU32(pt , s[0]);
s[1] = TD41(t1) ^ TD42(t0) ^ TD43(t3) ^ TD44(t2) ^ rk[1];
PUTU32(pt + 4, s[1]);
s[2] = TD41(t2) ^ TD42(t1) ^ TD43(t0) ^ TD44(t3) ^ rk[2];
PUTU32(pt + 8, s[2]);
s[3] = TD41(t3) ^ TD42(t2) ^ TD43(t1) ^ TD44(t0) ^ rk[3];
PUTU32(pt + 12, s[3]);
/*
s[0] = TE41(t0) ^ TE42(t1) ^ TE43(t2) ^ TE44(t3) ^ rk[8];
PUTU32(ct , s[0]);
s[1] = TE41(t1) ^ TE42(t2) ^ TE43(t3) ^ TE44(t0) ^ rk[9];
PUTU32(ct + 4, s[1]);
s[2] = TE41(t2) ^ TE42(t3) ^ TE43(t0) ^ TE44(t1) ^ rk[10];
PUTU32(ct + 8, s[2]);
s[3] = TE41(t3) ^ TE42(t0) ^ TE43(t1) ^ TE44(t2) ^ rk[11];
PUTU32(ct + 12, s[3]);
*/
}
void rijndaelDecrypt(const u32 rk[/*44*/], const u8 ct[16], u8 pt[16])
{
u32 s0, s1, s2, s3, t0, t1, t2, t3;
const int Nr = 10;
#ifndef FULL_UNROLL
int r;
#endif /* ?FULL_UNROLL */
/*
* map byte array block to cipher state
* and add initial round key:
*/
s0 = GETU32(ct ) ^ rk[0];
s1 = GETU32(ct + 4) ^ rk[1];
s2 = GETU32(ct + 8) ^ rk[2];
s3 = GETU32(ct + 12) ^ rk[3];
#define ROUND(i,d,s) \
d##0 = TD0(s##0) ^ TD1(s##3) ^ TD2(s##2) ^ TD3(s##1) ^ rk[4 * i]; \
d##1 = TD0(s##1) ^ TD1(s##0) ^ TD2(s##3) ^ TD3(s##2) ^ rk[4 * i + 1]; \
d##2 = TD0(s##2) ^ TD1(s##1) ^ TD2(s##0) ^ TD3(s##3) ^ rk[4 * i + 2]; \
d##3 = TD0(s##3) ^ TD1(s##2) ^ TD2(s##1) ^ TD3(s##0) ^ rk[4 * i + 3]
#ifdef FULL_UNROLL
ROUND(1,t,s);
ROUND(2,s,t);
ROUND(3,t,s);
ROUND(4,s,t);
ROUND(5,t,s);
ROUND(6,s,t);
ROUND(7,t,s);
ROUND(8,s,t);
ROUND(9,t,s);
rk += Nr << 2;
#else /* !FULL_UNROLL */
/* Nr - 1 full rounds: */
r = Nr >> 1;
for (;;) {
ROUND(1,t,s);
rk += 8;
if (--r == 0)
break;
ROUND(0,s,t);
}
#endif /* ?FULL_UNROLL */
#undef ROUND
/*
* apply last round and
* map cipher state to byte array block:
*/
s0 = TD41(t0) ^ TD42(t3) ^ TD43(t2) ^ TD44(t1) ^ rk[0];
PUTU32(pt , s0);
s1 = TD41(t1) ^ TD42(t0) ^ TD43(t3) ^ TD44(t2) ^ rk[1];
PUTU32(pt + 4, s1);
s2 = TD41(t2) ^ TD42(t1) ^ TD43(t0) ^ TD44(t3) ^ rk[2];
PUTU32(pt + 8, s2);
s3 = TD41(t3) ^ TD42(t2) ^ TD43(t1) ^ TD44(t0) ^ rk[3];
PUTU32(pt + 12, s3);
}