totp: new crate, sql migration + queries, enable totp page, save secret in database

crates/totp/src/lib.rs

@@ -0,0 +1,34 @@
+use totp_rs::{Algorithm, TotpUrlError, TOTP};
+
+pub use totp_rs::Secret;
+
+// error
+#[derive(thiserror::Error)]
+// the rest
+#[derive(Debug)]
+pub enum Error {
+    #[error("Totp url error: {0}")]
+    Url(#[from] TotpUrlError),
+
+    #[error("Totp secret error: {0}")]
+    Secret(String),
+}
+
+pub fn new(secret: Vec<u8>, issuer: String, account_name: String) -> Result<TOTP, Error> {
+    TOTP::new(
+        Algorithm::SHA1,
+        6,
+        1,
+        30,
+        secret,
+        Some(issuer),
+        account_name,
+    )
+    .map_err(Error::Url)
+}
+
+pub fn secret_to_bytes(secret: &Secret) -> Result<Vec<u8>, Error> {
+    secret
+        .to_bytes()
+        .map_err(|e| Error::Secret(format!("{:?}", e)))
+}