Update nitrokey crate to 0.2.3

This change updates the nitrokey crate to version 0.2.3. This version
bumps the rand crate used to 0.6.1, which in turn requires an additional
set of dependencies.

Import subrepo nitrokey/:nitrokey at b3e2adc5bb1300441ca74cc7672617c042f3ea31
Import subrepo rand/:rand at 73613ff903512e9503e41cc8ba9eae76269dc598
Import subrepo rustc_version/:rustc_version at 0294f2ba2018bf7be672abd53db351ce5055fa02
Import subrepo semver-parser/:semver-parser at 750da9b11a04125231b1fb293866ca036845acee
Import subrepo semver/:semver at 5eb6db94fa03f4d5c64a625a56188f496be47598

1 files changed, 92 insertions, 0 deletions

diff --git a/rand/rand_xorshift/tests/mod.rs b/rand/rand_xorshift/tests/mod.rs
new file mode 100644
index 0000000..8374b64
--- /dev/null
+++ b/rand/rand_xorshift/tests/mod.rs
@@ -0,0 +1,92 @@
+extern crate rand_core;
+extern crate rand_xorshift;
+#[cfg(all(feature="serde1", test))] extern crate bincode;
+
+use rand_core::{RngCore, SeedableRng};
+use rand_xorshift::XorShiftRng;
+
+#[test]
+fn test_xorshift_construction() {
+    // Test that various construction techniques produce a working RNG.
+    let seed = [1,2,3,4, 5,6,7,8, 9,10,11,12, 13,14,15,16];
+    let mut rng1 = XorShiftRng::from_seed(seed);
+    assert_eq!(rng1.next_u64(), 4325440999699518727);
+
+    let _rng2 = XorShiftRng::from_rng(rng1).unwrap();
+    // Note: we cannot test the state of _rng2 because from_rng does not
+    // fix Endianness. This is allowed in the trait specification.
+}
+
+#[test]
+fn test_xorshift_true_values() {
+    let seed = [16,15,14,13, 12,11,10,9, 8,7,6,5, 4,3,2,1];
+    let mut rng = XorShiftRng::from_seed(seed);
+
+    let mut results = [0u32; 9];
+    for i in results.iter_mut() { *i = rng.next_u32(); }
+    let expected: [u32; 9] = [
+        2081028795, 620940381, 269070770, 16943764, 854422573, 29242889,
+        1550291885, 1227154591, 271695242];
+    assert_eq!(results, expected);
+
+    let mut results = [0u64; 9];
+    for i in results.iter_mut() { *i = rng.next_u64(); }
+    let expected: [u64; 9] = [
+        9247529084182843387, 8321512596129439293, 14104136531997710878,
+        6848554330849612046, 343577296533772213, 17828467390962600268,
+        9847333257685787782, 7717352744383350108, 1133407547287910111];
+    assert_eq!(results, expected);
+
+    let mut results = [0u8; 32];
+    rng.fill_bytes(&mut results);
+    let expected = [102, 57, 212, 16, 233, 130, 49, 183,
+                    158, 187, 44, 203, 63, 149, 45, 17,
+                    117, 129, 131, 160, 70, 121, 158, 155,
+                    224, 209, 192, 53, 10, 62, 57, 72];
+    assert_eq!(results, expected);
+}
+
+#[test]
+fn test_xorshift_zero_seed() {
+    // Xorshift does not work with an all zero seed.
+    // Assert it does not panic.
+    let seed = [0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0];
+    let mut rng = XorShiftRng::from_seed(seed);
+    let a = rng.next_u64();
+    let b = rng.next_u64();
+    assert!(a != 0);
+    assert!(b != a);
+}
+
+#[test]
+fn test_xorshift_clone() {
+    let seed = [1,2,3,4, 5,5,7,8, 8,7,6,5, 4,3,2,1];
+    let mut rng1 = XorShiftRng::from_seed(seed);
+    let mut rng2 = rng1.clone();
+    for _ in 0..16 {
+        assert_eq!(rng1.next_u64(), rng2.next_u64());
+    }
+}
+
+#[cfg(feature="serde1")]
+#[test]
+fn test_xorshift_serde() {
+    use bincode;
+    use std::io::{BufWriter, BufReader};
+
+    let seed = [1,2,3,4, 5,6,7,8, 9,10,11,12, 13,14,15,16];
+    let mut rng = XorShiftRng::from_seed(seed);
+
+    let buf: Vec<u8> = Vec::new();
+    let mut buf = BufWriter::new(buf);
+    bincode::serialize_into(&mut buf, &rng).expect("Could not serialize");
+
+    let buf = buf.into_inner().unwrap();
+    let mut read = BufReader::new(&buf[..]);
+    let mut deserialized: XorShiftRng = bincode::deserialize_from(&mut read)
+        .expect("Could not deserialize");
+
+    for _ in 0..16 {
+        assert_eq!(rng.next_u64(), deserialized.next_u64());
+    }
+}