diff --git a/src/rsa/padding.rs b/src/rsa/padding.rs
index 94632ef50..e09e6836e 100644
--- a/src/rsa/padding.rs
+++ b/src/rsa/padding.rs
@@ -81,7 +81,7 @@ impl RSAVerification for PKCS1 {
         &self, m_hash: &digest::Digest, m: &mut untrusted::Reader, mod_bits: bits::BitLength,
     ) -> Result<(), error::Unspecified> {
         // `mod_bits.as_usize_bytes_rounded_up() <=
-        //      PUBLIC_KEY_PUBLIC_MODULUS_MAX_LEN` is ensured by `verify_rsa()`.
+        //      PUBLIC_KEY_PUBLIC_MODULUS_MAX_LEN` is ensured by `verify_rsa_()`.
         let mut calculated = [0u8; PUBLIC_KEY_PUBLIC_MODULUS_MAX_LEN];
         let calculated = &mut calculated[..mod_bits.as_usize_bytes_rounded_up()];
         pkcs1_encode(&self, m_hash, calculated);
diff --git a/src/rsa/verification.rs b/src/rsa/verification.rs
index 4d13a6558..af4a87d33 100644
--- a/src/rsa/verification.rs
+++ b/src/rsa/verification.rs
@@ -15,7 +15,7 @@
 use super::{bigint, parse_public_key, RSAParameters, N, PUBLIC_KEY_PUBLIC_MODULUS_MAX_LEN};
 /// RSA PKCS#1 1.5 signatures.
 use core;
-use crate::{bits, digest, error, private, signature};
+use crate::{bits, cpu, digest, error, private, signature};
 use untrusted;
 
 #[derive(Debug)]
@@ -87,7 +87,7 @@ impl signature::VerificationAlgorithm for RSAParameters {
         &self, public_key: untrusted::Input, msg: untrusted::Input, signature: untrusted::Input,
     ) -> Result<(), error::Unspecified> {
         let public_key = parse_public_key(public_key)?;
-        verify_rsa(self, public_key, msg, signature)
+        verify_rsa_(self, public_key, msg, signature)
     }
 }
 
@@ -222,6 +222,14 @@ rsa_params!(
 pub fn verify_rsa(
     params: &RSAParameters, (n, e): (untrusted::Input, untrusted::Input), msg: untrusted::Input,
     signature: untrusted::Input,
+) -> Result<(), error::Unspecified> {
+    cpu::cache_detected_features();
+    verify_rsa_(params, (n, e), msg, signature)
+}
+
+pub(crate) fn verify_rsa_(
+    params: &RSAParameters, (n, e): (untrusted::Input, untrusted::Input), msg: untrusted::Input,
+    signature: untrusted::Input,
 ) -> Result<(), error::Unspecified> {
     let max_bits = bits::BitLength::from_usize_bytes(PUBLIC_KEY_PUBLIC_MODULUS_MAX_LEN)?;