Function subshift

libavutil/aes.c:55–62

}

static void subshift(uint8_t s0[2][16], int s, const uint8_t *box){
    uint8_t (*s1)[16]= s0[0] - s;
    uint8_t (*s3)[16]= s0[0] + s;
    s0[0][0]=box[s0[1][ 0]]; s0[0][ 4]=box[s0[1][ 4]]; s0[0][ 8]=box[s0[1][ 8]]; s0[0][12]=box[s0[1][12]];
    s1[0][3]=box[s1[1][ 7]]; s1[0][ 7]=box[s1[1][11]]; s1[0][11]=box[s1[1][15]]; s1[0][15]=box[s1[1][ 3]];
    s0[0][2]=box[s0[1][10]]; s0[0][10]=box[s0[1][ 2]]; s0[0][ 6]=box[s0[1][14]]; s0[0][14]=box[s0[1][ 6]];
    s3[0][1]=box[s3[1][13]]; s3[0][13]=box[s3[1][ 9]]; s3[0][ 9]=box[s3[1][ 5]]; s3[0][ 5]=box[s3[1][ 1]];
}

static inline int mix_core(uint32_t multbl[4][256], int a, int b, int c, int d){
#if CONFIG_SMALL