Add tests + testvectos from blake2b

src/crypto/generichash/mod.rs

@@ -108,3 +108,94 @@ impl State {
         result
     }
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    #[cfg(not(feature = "std"))]
+    use prelude::*;
+
+    #[test]
+    fn test_vector_1() {
+        // hash of empty string
+        let x = [];
+        let h_expected = [
+            0x0e, 0x57, 0x51, 0xc0, 0x26, 0xe5, 0x43, 0xb2, 0xe8, 0xab, 0x2e,
+            0xb0, 0x60, 0x99, 0xda, 0xa1, 0xd1, 0xe5, 0xdf, 0x47, 0x77, 0x8f,
+            0x77, 0x87, 0xfa, 0xab, 0x45, 0xcd, 0xf1, 0x2f, 0xe3, 0xa8,
+        ];
+        let mut hasher = State::new(32, None).unwrap();
+        hasher.update(&x);
+        let h = hasher.finalize();
+        assert!(h.as_ref() == h_expected);
+    }
+
+    #[test]
+    fn test_vector_2() {
+        // The quick brown fox jumps over the lazy dog
+        let x = [
+            0x54, 0x68, 0x65, 0x20, 0x71, 0x75, 0x69, 0x63, 0x6b, 0x20, 0x62,
+            0x72, 0x6f, 0x77, 0x6e, 0x20, 0x66, 0x6f, 0x78, 0x20, 0x6a, 0x75,
+            0x6d, 0x70, 0x73, 0x20, 0x6f, 0x76, 0x65, 0x72, 0x20, 0x74, 0x68,
+            0x65, 0x20, 0x6c, 0x61, 0x7a, 0x79, 0x20, 0x64, 0x6f, 0x67,
+        ];
+        let h_expected = [
+            0x01, 0x71, 0x8c, 0xec, 0x35, 0xcd, 0x3d, 0x79, 0x6d, 0xd0, 0x00,
+            0x20, 0xe0, 0xbf, 0xec, 0xb4, 0x73, 0xad, 0x23, 0x45, 0x7d, 0x06,
+            0x3b, 0x75, 0xef, 0xf2, 0x9c, 0x0f, 0xfa, 0x2e, 0x58, 0xa9,
+        ];
+        let mut hasher = State::new(32, None).unwrap();
+        hasher.update(&x);
+        let h = hasher.finalize();
+        assert!(h.as_ref() == h_expected);
+    }
+
+    #[test]
+    fn test_blake2b_vectors() {
+        use rustc_serialize::hex::FromHex;
+        use std::fs::File;
+        use std::io::{BufRead, BufReader};
+
+        let mut r =
+            BufReader::new(File::open("testvectors/blake2b-kat.txt").unwrap());
+        let mut line = String::new();
+
+        loop {
+            let msg = {
+                line.clear();
+                if let Err(_) = r.read_line(&mut line) {
+                    break;
+                }
+
+                match line.len() {
+                    0 => break,
+                    1...3 => continue,
+                    _ => {}
+                }
+
+                assert!(line.starts_with("in:"));
+                line[3..].trim().from_hex().unwrap()
+            };
+
+            let key = {
+                line.clear();
+                r.read_line(&mut line).unwrap();
+                assert!(line.starts_with("key:"));
+                line[4..].trim().from_hex().unwrap()
+            };
+
+            let expected_hash = {
+                line.clear();
+                r.read_line(&mut line).unwrap();
+                assert!(line.starts_with("hash:"));
+                line[5..].from_hex().unwrap()
+            };
+
+            let mut hasher = State::new(64, Some(&key)).unwrap();
+            hasher.update(&msg);
+
+            let result_hash = hasher.finalize();
+            assert!(result_hash.as_ref() == expected_hash.as_slice());
+        }
+    }
+}