Merge pull request #330 from esclear/master

Add a interface to RSA structs

openssl-sys/src/lib.rs

@@ -22,9 +22,7 @@ pub type ENGINE = c_void;
 pub type EVP_CIPHER = c_void;
 pub type EVP_CIPHER_CTX = c_void;
 pub type EVP_MD = c_void;
-pub type EVP_PKEY = c_void;
 pub type EVP_PKEY_CTX = c_void;
-pub type RSA = c_void;
 pub type SSL = c_void;
 pub type SSL_CTX = c_void;
 pub type SSL_METHOD = c_void;
@@ -64,6 +62,47 @@ pub struct BIO_METHOD {
 // so we can create static BIO_METHODs
 unsafe impl Sync for BIO_METHOD {}
 
+#[repr(C)]
+pub struct RSA {
+    pub pad: c_int,
+    pub version: c_long,
+    pub meth: *const c_void,
+
+    pub engine: *mut c_void,
+    pub n: *mut BIGNUM,
+    pub e: *mut BIGNUM,
+    pub d: *mut BIGNUM,
+    pub p: *mut BIGNUM,
+    pub q: *mut BIGNUM,
+    pub dmp1: *mut BIGNUM,
+    pub dmq1: *mut BIGNUM,
+    pub iqmp: *mut BIGNUM,
+
+    pub ex_data: *mut c_void,
+    pub references: c_int,
+    pub flags: c_int,
+
+    pub _method_mod_n: *mut c_void,
+    pub _method_mod_p: *mut c_void,
+    pub _method_mod_q: *mut c_void,
+
+    pub bignum_data: *mut c_char,
+    pub blinding: *mut c_void,
+    pub mt_blinding: *mut c_void,
+}
+
+#[repr(C)]
+pub struct EVP_PKEY {
+    pub type_: c_int,
+    pub save_type: c_int,
+    pub references: c_int,
+    pub ameth: *const c_void,
+    pub engine: *mut ENGINE,
+    pub pkey: *mut c_void,
+    pub save_parameters: c_int,
+    pub attributes: *mut c_void,
+}
+
 #[repr(C)]
 pub struct BIO {
     pub method: *mut BIO_METHOD,

openssl/src/bn/mod.rs

@@ -102,6 +102,18 @@ impl BigNum {
         })
     }
 
+    pub unsafe fn new_from_ffi(orig: *mut ffi::BIGNUM) -> Result<BigNum, SslError> {
+        if orig.is_null() {
+            panic!("Null Pointer was supplied to BigNum::new_from_ffi");
+        }
+        let r = ffi::BN_dup(orig);
+        if r.is_null() {
+            Err(SslError::get())
+        } else {
+            Ok(BigNum(r))
+        }
+    }
+
     pub fn new_from_slice(n: &[u8]) -> Result<BigNum, SslError> {
         BigNum::new().and_then(|v| unsafe {
             try_ssl_null!(ffi::BN_bin2bn(n.as_ptr(), n.len() as c_int, v.raw()));

openssl/src/crypto/mod.rs

@@ -21,5 +21,6 @@ pub mod pkey;
 pub mod rand;
 pub mod symm;
 pub mod memcmp;
+pub mod rsa;
 
 mod symm_internal;

openssl/src/crypto/pkey.rs

@@ -100,7 +100,7 @@ impl PKey {
                                                                  None,
                                                                  ptr::null_mut()));
             Ok(PKey {
-                evp: evp,
+                evp: evp as *mut ffi::EVP_PKEY,
                 parts: Parts::Both,
             })
         }
@@ -119,7 +119,7 @@ impl PKey {
                                                              None,
                                                              ptr::null_mut()));
             Ok(PKey {
-                evp: evp,
+                evp: evp as *mut ffi::EVP_PKEY,
                 parts: Parts::Public,
             })
         }

openssl/src/crypto/rsa.rs

@@ -0,0 +1,46 @@
+use ffi;
+use bn::BigNum;
+use std::fmt;
+
+pub struct RSA {
+    rsa_obj : ffi::RSA
+}
+
+impl RSA {
+    // The following getters are unsafe, since BigNum::new_from_ffi fails upon null pointers
+    pub fn n(&self) -> BigNum {
+        unsafe {
+            BigNum::new_from_ffi(self.rsa_obj.n).unwrap()
+        }
+    }
+
+    pub fn d(&self) -> BigNum {
+        unsafe {
+            BigNum::new_from_ffi(self.rsa_obj.d).unwrap()
+        }
+    }
+
+    pub fn e(&self) -> BigNum {
+        unsafe {
+            BigNum::new_from_ffi(self.rsa_obj.e).unwrap()
+        }
+    }
+
+    pub fn p(&self) -> BigNum {
+        unsafe {
+            BigNum::new_from_ffi(self.rsa_obj.p).unwrap()
+        }
+    }
+
+    pub fn q(&self) -> BigNum {
+        unsafe {
+            BigNum::new_from_ffi(self.rsa_obj.q).unwrap()
+        }
+    }
+}
+
+impl fmt::Debug for RSA {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "RSA")
+    }
+}