Add users authentication routes

matrixgw_backend/src/utils/crypt_utils.rs

@@ -0,0 +1,6 @@
+use sha2::{Digest, Sha256};
+
+/// Compute SHA256sum of a given string
+pub fn sha256str(input: &str) -> String {
+    hex::encode(Sha256::digest(input.as_bytes()))
+}