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use ffi;
use std::fmt;
use ssl::error::{SslError, StreamError};
use std::ptr;
use std::io::{self, Read};
use bn::BigNum;
use bio::MemBio;
pub struct RSA(*mut ffi::RSA);
impl Drop for RSA {
fn drop(&mut self) {
unsafe {
ffi::RSA_free(self.0);
}
}
}
impl RSA {
/// only useful for associating the key material directly with the key, it's safer to use
/// the supplied load and save methods for DER formatted keys.
pub fn from_public_components(n: BigNum, e: BigNum) -> Result<RSA, SslError> {
unsafe {
let rsa = try_ssl_null!(ffi::RSA_new());
(*rsa).n = n.into_raw();
(*rsa).e = e.into_raw();
Ok(RSA(rsa))
}
}
/// the caller should assert that the rsa pointer is valid.
pub unsafe fn from_raw(rsa: *mut ffi::RSA) -> RSA {
RSA(rsa)
}
/// Reads an RSA private key from PEM formatted data.
pub fn private_key_from_pem<R>(reader: &mut R) -> Result<RSA, SslError>
where R: Read
{
let mut mem_bio = try!(MemBio::new());
try!(io::copy(reader, &mut mem_bio).map_err(StreamError));
unsafe {
let rsa = try_ssl_null!(ffi::PEM_read_bio_RSAPrivateKey(mem_bio.get_handle(),
ptr::null_mut(),
None,
ptr::null_mut()));
Ok(RSA(rsa))
}
}
/// Reads an RSA public key from PEM formatted data.
pub fn public_key_from_pem<R>(reader: &mut R) -> Result<RSA, SslError>
where R: Read
{
let mut mem_bio = try!(MemBio::new());
try!(io::copy(reader, &mut mem_bio).map_err(StreamError));
unsafe {
let rsa = try_ssl_null!(ffi::PEM_read_bio_RSA_PUBKEY(mem_bio.get_handle(),
ptr::null_mut(),
None,
ptr::null_mut()));
Ok(RSA(rsa))
}
}
pub fn as_ptr(&self) -> *mut ffi::RSA {
self.0
}
// The following getters are unsafe, since BigNum::new_from_ffi fails upon null pointers
pub fn n(&self) -> Result<BigNum, SslError> {
unsafe {
BigNum::new_from_ffi((*self.0).n)
}
}
pub fn has_n(&self) -> bool {
unsafe {
!(*self.0).n.is_null()
}
}
pub fn d(&self) -> Result<BigNum, SslError> {
unsafe {
BigNum::new_from_ffi((*self.0).d)
}
}
pub fn e(&self) -> Result<BigNum, SslError> {
unsafe {
BigNum::new_from_ffi((*self.0).e)
}
}
pub fn has_e(&self) -> bool {
unsafe {
!(*self.0).e.is_null()
}
}
pub fn p(&self) -> Result<BigNum, SslError> {
unsafe {
BigNum::new_from_ffi((*self.0).p)
}
}
pub fn q(&self) -> Result<BigNum, SslError> {
unsafe {
BigNum::new_from_ffi((*self.0).q)
}
}
}
impl fmt::Debug for RSA {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "RSA")
}
}
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