fix(servo): gate vulnerable RSA private operations

third_party/rsa/src/hazmat.rs

@@ -0,0 +1,14 @@
+//! ⚠️ Low-level "hazmat" RSA functions.
+//!
+//! # ☢️️ WARNING: HAZARDOUS API ☢️
+//!
+//! This module holds functions that apply RSA's core encryption and decryption
+//! primitives to raw data without adding or removing appropriate padding. A
+//! well-reviewed padding scheme is crucial to the security of RSA, so there are
+//! very few valid uses cases for this API. It's intended to be used for
+//! implementing well-reviewed higher-level constructions.
+//!
+//! We do NOT recommend using it to implement any algorithm which has not
+//! received extensive peer review by cryptographers.
+
+pub use crate::algorithms::rsa::{rsa_decrypt, rsa_decrypt_and_check, rsa_encrypt};