public class main {
/*
install_pcm
seed="45 82 0A"
real_key="3B 15 E1"

install_pcm_again
seed="36 F0 F7"
real_key="C9 4E C9"

sjb
 */
	public static void main(String[] args) {

		String seed = "7A 6B 61";
		String real_key = "96 11 73";

		System.out.println("Observed seed: "+seed);
		int s1 = 0x3f;
		int s2 = 0x9e;
		int s3 = 0x78;
		int s4 = 0xc5;
		int s5 = 0x96;

		int seed_int = (Integer.parseInt(seed.substring(0, 2),16)<<16) + (Integer.parseInt(seed.substring(3, 5),16)<<8)+(Integer.parseInt(seed.substring(6,8),16));

		int or_ed_seed = ((seed_int & 0xFF0000) >> 16) | (seed_int & 0xFF00) | (s1 << 24) | (seed_int & 0xff) << 16;

		int mucked_value = 0xc541a9;

		int test;
		int a_bit,v9,v8,v10;
		for(int i = 0 ; i<32; i++) {
			a_bit = ((or_ed_seed >> i) & 1 ^ mucked_value & 1) << 23;
			v9 = v10 = v8 = a_bit | (mucked_value >> 1);
			mucked_value = v10 & 0xEF6FD7 | ((((v9 & 0x100000) >> 20) ^ ((v8 & 0x800000) >> 23)) << 20) | (((((mucked_value >> 1) & 0x8000) >> 15) ^ ((v8 & 0x800000) >> 23)) << 15) | (((((mucked_value >> 1) & 0x1000) >> 12) ^ ((v8 & 0x800000) >> 23)) << 12) | 32 * ((((mucked_value >> 1) & 0x20) >> 5) ^ ((v8 & 0x800000) >> 23)) | 8 * ((((mucked_value >> 1) & 8) >> 3) ^ ((v8 & 0x800000) >> 23));
		}

		int v11,v12,v13,v14;
		for(int j = 0; j<32; j++) {
			v11 = ((((s5 << 24) | (s4 << 16) | s2 | (s3 << 8)) >> j) & 1 ^ mucked_value & 1) << 23;
			v12 = v11 | (mucked_value >> 1);
			v13 = v11 | (mucked_value >> 1);
			v14 = v11 | (mucked_value >> 1);
			mucked_value = v14 & 0xEF6FD7 | ((((v13 & 0x100000) >> 20) ^ ((v12 & 0x800000) >> 23)) << 20) | (((((mucked_value >> 1) & 0x8000) >> 15) ^ ((v12 & 0x800000) >> 23)) << 15) | (((((mucked_value >> 1) & 0x1000) >> 12) ^ ((v12 & 0x800000) >> 23)) << 12) | 32 * ((((mucked_value >> 1) & 0x20) >> 5) ^ ((v12 & 0x800000) >> 23)) | 8 * ((((mucked_value >> 1) & 8) >> 3) ^ ((v12 & 0x800000) >> 23));
		}

		int key = ((mucked_value & 0xF0000) >> 16) | 16 * (mucked_value & 0xF) | ((((mucked_value & 0xF00000) >> 20) | ((mucked_value & 0xF000) >> 8)) << 8) | ((mucked_value & 0xFF0) >> 4 << 16);
		System.out.printf("Computed key: %x \n", key);
		System.out.println("observed key:"+real_key);

	}




}