Shift directory structure

1 files changed, 30 insertions, 0 deletions

diff --git a/src/crypto/rand.rs b/src/crypto/rand.rs
new file mode 100644
index 00000000..9db87fcd
--- /dev/null
+++ b/src/crypto/rand.rs
@@ -0,0 +1,30 @@
+use libc::c_int;
+
+#[link(name = "crypto")]
+extern {
+    fn RAND_bytes(buf: *mut u8, num: c_int) -> c_int;
+}
+
+pub fn rand_bytes(len: uint) -> Vec<u8> {
+    unsafe {
+        let mut out = Vec::with_capacity(len);
+
+        let r = RAND_bytes(out.as_mut_ptr(), len as c_int);
+        if r != 1 as c_int { fail!() }
+
+        out.set_len(len);
+
+        out
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::rand_bytes;
+
+    #[test]
+    fn test_rand_bytes() {
+        let bytes = rand_bytes(32u);
+        println!("{}", bytes);
+    }
+}