int encode_data(unsigned char *dst, int dst_len,
unsigned char *src, int src_len, int rand)
{
int i, b, x, srcb_len=src_len<<3;
unsigned char *srcb = malloc(srcb_len * sizeof *srcb);
if(dst_len != (src_len<<3))
return(-1);
// store bits into srcb
x=0;
memset(srcb, 0, srcb_len);
for(i=0; i<src_len; i++) {
for(b=0; b<8; b++) {
srcb[x] = ENCODE_BIT(srcb[x], src[i], b);
x++;
}
}
// Shuffle bytes randomly if necessary
if(rand == 1)
prng_array_shuffle(srcb, (unsigned int)srcb_len);
// Set destination bits
for(i=0; i<dst_len; i++) {
dst[i] = ENCODE_BIT(dst[i], srcb[i], 7);
}
free(srcb);
return(0);
}
void
BIO_Stdio_Encode_Bit (int bit, stdio_bitio_state * bs)
{
ENCODE_CONTINUE (*bs)
ENCODE_BIT (bit);
ENCODE_PAUSE (*bs)
}
