Make rsa::{self, public::{self, *}} public.

src/lib.rs

@@ -105,7 +105,7 @@ pub mod pkcs8;
 pub mod rand;
 
 #[cfg(feature = "alloc")]
-mod rsa;
+pub mod rsa;
 
 pub mod signature;
 

src/rsa.rs

@@ -17,7 +17,7 @@
 // naming conventions. Also the standard camelCase names are used for `KeyPair`
 // components.
 
-//! Low-level RSA primitives.
+//! RSA.
 
 use crate::{
     arithmetic::bigint,

src/rsa/public.rs

@@ -12,7 +12,7 @@
 // OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 // CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-//! Low-level RSA public key API.
+//! RSA public keys.
 
 mod components;
 mod exponent;

src/rsa/public/exponent.rs

@@ -1,7 +1,7 @@
 use crate::error;
 use core::num::NonZeroU64;
 
-/// The exponent `e` of the RSA public key.
+/// The exponent `e` of an RSA public key.
 #[derive(Clone, Copy, Debug)]
 pub struct Exponent(NonZeroU64);
 
@@ -30,7 +30,7 @@ impl Exponent {
     // stable.
     const MAX: Self = Self(unsafe { NonZeroU64::new_unchecked((1u64 << 33) - 1) });
 
-    pub fn from_be_bytes(
+    pub(super) fn from_be_bytes(
         input: untrusted::Input,
         min_value: Self,
     ) -> Result<Self, error::KeyRejected> {

src/rsa/public/key.rs

@@ -15,6 +15,7 @@
 use super::{Exponent, Modulus};
 use crate::{bits, error};
 
+/// An RSA Public Key.
 #[derive(Debug)]
 pub struct Key {
     n: Modulus,
@@ -22,7 +23,7 @@ pub struct Key {
 }
 
 impl Key {
-    pub fn from_modulus_and_exponent(
+    pub(in super::super) fn from_modulus_and_exponent(
         n: untrusted::Input,
         e: untrusted::Input,
         n_min_bits: bits::BitLength,
@@ -52,10 +53,14 @@ impl Key {
         Ok(Self { n, e })
     }
 
+    /// The public modulus.
+    #[inline]
     pub fn n(&self) -> &Modulus {
         &self.n
     }
 
+    /// The public exponent.
+    #[inline]
     pub fn e(&self) -> Exponent {
         self.e
     }

src/rsa/public/modulus.rs

@@ -1,6 +1,7 @@
 use crate::{arithmetic::bigint, bits, error, rsa::N};
 use core::ops::RangeInclusive;
 
+/// The modulus (n) of an RSA public key.
 pub struct Modulus {
     value: bigint::Modulus<N>,
     bits: bits::BitLength,