chore: Use naming scheme without rosenpass- for crates

constant-time/src/lib.rs

@@ -0,0 +1,18 @@
+/// Xors a and b element-wise and writes the result into a.
+///
+/// # Examples
+///
+/// ```
+/// use rosenpass_constant_time::xor_into;
+/// let mut a = String::from("hello").into_bytes();
+/// let b = b"world";
+/// xor_into(&mut a, b);
+/// assert_eq!(&a, b"\x1f\n\x1e\x00\x0b");
+/// ```
+#[inline]
+pub fn xor_into(a: &mut [u8], b: &[u8]) {
+    assert!(a.len() == b.len());
+    for (av, bv) in a.iter_mut().zip(b.iter()) {
+        *av ^= *bv;
+    }
+}