Created and Finished Part 1 of A3

a3_decrypter/decrypter/Cargo.lock

+[[package]]
+name = "decrypter"
+version = "0.1.0"
+

a3_decrypter/decrypter/src/main.rs

+
+
+fn codgen(seed: &mut u32) -> u32{
+    let n: u32 = seed.count_zeros();            // built-in count zeroes in n
+    let x: u32 = seed.rotate_left(30);          // rorate left by 30 bits
+    let y: u32 = (*seed as i32 >> 6) as u32;     // shift right by 6 bits
+     
+    *seed = x ^ y ^ n;
+    *seed ^ 0x464b713e 
+}
+
+
+fn decode(wordarr: &[u32], bytearr: &mut [u8], mut seed: &mut u32) -> u32{
+    let m: u32;
+    let mut r: u32;
+    let x: u32;
+    let y: u32;
+
+    x = !codgen(&mut seed); //1's complement is simply inverting the output
+    if wordarr[0] == 0 {
+        bytearr[0] = 0;
+        r = x;
+    } else {
+        y = decode(&wordarr[1..], &mut bytearr[1..], &mut seed);
+        m = x.wrapping_sub(y).wrapping_sub(wordarr[0]);
+        bytearr[0] = (((m & 0x000ff000) >> 13) as u8); //0b11111111000000000000; 
+        r = (!codgen(&mut seed)).wrapping_add(1);
+        r = x.wrapping_add(y).wrapping_add(m).wrapping_add(r).wrapping_add(5);
+    }
+
+    return r;
+
+}
+
 fn main() {
-    println!("Hello, world!");
+
+    //u8 plain[132];
+    let mut plain: [u8; 132] = [0; 132];
+
+    //abc
+    let abc: [u32; 4] = [0x9fdd9158, 0x85715808, 0xac73323a, 0];
+    let coded: [u32; 132] = [0x015e7a47, 0x2ef84ebb, 0x177a8db4, 0x1b722ff9, 0x5dc7cff0,
+        0x5dc9dea6, 0x1da0c15a, 0xe4c236a2, 0x3d16b0d0, 0x1f397842, 0xaae0d2ba, 0x11246674,
+        0x0845317f, 0xd5512dad, 0xb6184977, 0xd293a53e, 0x7d9c2716, 0xd917eae6, 0xd8852384,
+        0x286e46f9, 0xce566029, 0xcefe7daf, 0x62d726d4, 0x0dbaeb2d, 0x95f57c60, 0xed515141,
+        0x29b77d0f, 0x9f7b8d0c, 0x45a8395a, 0xfead2b72, 0x883d434c, 0xed8ddf60, 0xe51e65e4,
+        0x19bf6bb1, 0xfeb505ec, 0x662aa23c, 0xf6827cf8, 0xd1dc7a5c, 0x4fa5b066, 0x7ddd25a4,
+        0xa8ba8e8a, 0x72846227, 0xf8f636fb, 0x2b389a9c, 0xe4038bf6, 0x6e169877, 0xad028132,
+        0x84dbfe8c, 0x243762ff, 0x59c8f80c, 0xb6e0db4b, 0xedb8cab7, 0xcd4b39f6, 0xaf263741,
+        0x18d9965f, 0x1ab1f037, 0x5b458792, 0xc94d960d, 0xd45cedea, 0x2160aca3, 0x93c77766,
+        0x2d66e105, 0x9ff74d4f, 0x6dc22f21, 0x6b03d689, 0x5fc48de0, 0x1138f000, 0xccb58e57,
+        0xf9c8e200, 0x7ab26e3c, 0xc61dcb3e, 0x6aefccb0, 0x7a452f05, 0xa5cf0731, 0xa249383f,
+        0x628fe534, 0xcad81710, 0x7f616276, 0x3ce18308, 0xed4857ff, 0xd1e5b1d1, 0xc2e84dc2,
+        0xaa003742, 0xaf637488, 0x831afc48, 0x287a69a0, 0x6e04546e, 0x13dffa07, 0x3232fb10,
+        0xd69e2e09, 0x355d8dc7, 0xef902301, 0x9a89ac15, 0x967dc900, 0x08dc2b1c, 0x6b5be690,
+        0x894b0e02, 0xe26af9af, 0xa6fd3b23, 0xfcf213e5, 0x85217608, 0x7fd3be8b, 0xa2e757fb,
+        0x3717a341, 0x85ee426d, 0x394bb856, 0x12ac98c3, 0xec7d4ab5, 0x721b6989, 0x30e36360,
+        0xaa018403, 0x9ee61196, 0xa8697adc, 0x51e9d65a, 0x11023594, 0xc4c4b36b, 0xda80bf7a,
+        0xbd5a645e, 0x18cea918, 0xa723dda8, 0x0126c05e, 0x2962d48a, 0xd5f7d312, 0xb8947041,
+        0x7c1e2e9a, 0x945eeac3, 0x7110fb1c, 0xa7bc72cc, 0xdf47dfbb, 0x09a1c6c8, 0xc2e41061, 
+        0];
+
+    let mut test_seed: u32 = 0x3e944b9f;
+    let mut seed: u32 = 0x0e0657c1;
+    
+    let a: u32 = codgen(&mut test_seed);
+    let b: u32 = codgen(&mut test_seed);
+    let c: u32 = codgen(&mut test_seed);
+    println!("\nOutput Codgen:");
+    println!("{:x}", a);
+    println!("{:x}", b);
+    println!("{:x}", c);
+
+    let x: u32 = decode(&coded[..], &mut plain, &mut seed);
+
+//    for i in plain.iter() {
+//        println!("i> {}", i);
+//        if *i == 0 as u8 {
+//            break;
+//        }
+//    }
+
+    println!("\nComplete Output: {}", std::str::from_utf8(&plain[..]).unwrap());    
 }
+
+

a3_decrypter/decrypter/target/debug/.fingerprint/decrypter-af97aa99087703bd/bin-decrypter-af97aa99087703bd

+2b15e816d728436d
\ No newline at end of file

a3_decrypter/decrypter/target/debug/.fingerprint/decrypter-af97aa99087703bd/bin-decrypter-af97aa99087703bd.json

+{"rustc":16349303590983159748,"features":"[]","target":9934871626033517107,"profile":3630501895014908796,"path":1036222786711178230,"deps":[],"local":[{"MtimeBased":[[1525451812,809747580],".fingerprint/decrypter-af97aa99087703bd/dep-bin-decrypter-af97aa99087703bd"]}],"rustflags":[],"edition":"Edition2015"}
\ No newline at end of file

a3_decrypter/decrypter/target/debug/decrypter.d

+/home/rez/Studies/D7018e_Rust/rust_course/a3_decrypter/decrypter/target/debug/decrypter: /home/rez/Studies/D7018e_Rust/rust_course/a3_decrypter/decrypter/src/main.rs

a3_decrypter/decrypter/target/debug/deps/decrypter-af97aa99087703bd.d

+/home/rez/Studies/D7018e_Rust/rust_course/a3_decrypter/decrypter/target/debug/deps/decrypter-af97aa99087703bd: src/main.rs
+
+/home/rez/Studies/D7018e_Rust/rust_course/a3_decrypter/decrypter/target/debug/deps/decrypter-af97aa99087703bd.d: src/main.rs
+
+src/main.rs: