Rust wrapper: add wolfssl::wolfcrypt::rsa module

Author: holtrop-wolfssl

doc/dox_comments/header_files/rsa.h

@@ -185,8 +185,7 @@ int wc_RsaDirect(const byte* in, word32 inLen, byte* out, word32* outSz,
     to out in outLen.
 
     \return Success Upon successfully encrypting the input message, returns
-    0 for success and less than zero for failure. Also returns the number
-    bytes written to out by storing the value in outLen
+    the number of bytes written on success and less than zero for failure.
     \return BAD_FUNC_ARG Returned if any of the input parameters are invalid
     \return RSA_BUFFER_E Returned if the output buffer is too small to store
     the ciphertext
@@ -1514,7 +1513,7 @@ int wc_RsaKeyToPublicDer_ex(RsaKey* key, byte* output, word32 inLen,
     \param e exponent parameter to use for generating the key. A secure
     choice is 65537
     \param rng pointer to an RNG structure to use for random number generation
-    while making the ke
+    while making the key
 
     _Example_
     \code

wrapper/rust/include.am

@@ -18,5 +18,7 @@ EXTRA_DIST += wrapper/rust/wolfssl/src/lib.rs
 EXTRA_DIST += wrapper/rust/wolfssl/src/wolfcrypt.rs
 EXTRA_DIST += wrapper/rust/wolfssl/src/wolfcrypt/aes.rs
 EXTRA_DIST += wrapper/rust/wolfssl/src/wolfcrypt/random.rs
+EXTRA_DIST += wrapper/rust/wolfssl/src/wolfcrypt/rsa.rs
 EXTRA_DIST += wrapper/rust/wolfssl/tests/test_aes.rs
 EXTRA_DIST += wrapper/rust/wolfssl/tests/test_random.rs
+EXTRA_DIST += wrapper/rust/wolfssl/tests/test_rsa.rs

wrapper/rust/wolfssl/src/wolfcrypt.rs

@@ -1,2 +1,3 @@
 pub mod aes;
 pub mod random;
+pub mod rsa;

wrapper/rust/wolfssl/src/wolfcrypt/aes.rs

@@ -1,5 +1,5 @@
 /*!
-This crate provides a Rust wrapper for the wolfCrypt library's Advanced
+This module provides a Rust wrapper for the wolfCrypt library's Advanced
 Encryption Standard (AES) functionality.
 
 It leverages the `wolfssl-sys` crate for low-level FFI bindings, encapsulating

wrapper/rust/wolfssl/src/wolfcrypt/random.rs

@@ -1,5 +1,5 @@
 /*!
-This crate provides a Rust wrapper for the wolfCrypt library's random number
+This module provides a Rust wrapper for the wolfCrypt library's random number
 generator (RNG).
 
 It leverages the `wolfssl-sys` crate for low-level FFI bindings, encapsulating
@@ -38,7 +38,7 @@ use std::mem::{size_of, MaybeUninit};
 /// ensures that the underlying wolfSSL RNG context is correctly freed when the
 /// `RNG` struct goes out of scope, preventing memory leaks.
 pub struct RNG {
-    wc_rng: ws::WC_RNG,
+    pub(crate) wc_rng: ws::WC_RNG,
 }
 
 impl RNG {