Allows the user to implement the logic for identity object creation

src/imp/openssl.rs

@@ -184,6 +184,10 @@ impl Identity {
         let chain = cert_chain.collect();
         Ok(Identity { pkey, cert, chain })
     }
+
+    pub fn from_raw(context: RawType) -> Identity {
+        Identity { pkey: context.0, cert: context.1, chain: context.2 }
+    }
 }
 
 #[derive(Clone)]

src/imp/schannel.rs

@@ -14,6 +14,8 @@ use {TlsAcceptorBuilder, TlsConnectorBuilder};
 
 const SEC_E_NO_CREDENTIALS: u32 = 0x8009030E;
 
+pub type RawType = self::schannel::cert_context::CertContext;
+
 static PROTOCOLS: &'static [Protocol] = &[
     Protocol::Ssl3,
     Protocol::Tls10,
@@ -140,6 +142,12 @@ impl Identity {
         }
         Ok(Identity { cert: context })
     }
+
+
+    pub fn from_raw(context: CertContext) -> Identity {
+        Identity { cert: context }
+    }
+
 }
 
 // The name of the container must be unique to have multiple active keys.

src/imp/security_framework.rs

@@ -52,6 +52,8 @@ fn convert_protocol(protocol: Protocol) -> SslProtocol {
     }
 }
 
+pub type RawType = (SecIdentity, Vec<SecCertificate>);
+
 pub struct Error(base::Error);
 
 impl error::Error for Error {
@@ -148,6 +150,10 @@ impl Identity {
         })
     }
 
+    pub fn from_raw(context: RawType) -> Identity {
+        Identity { identity: context.0, chain: context.1 }
+    }
+
     #[cfg(not(target_os = "ios"))]
     fn import_options(buf: &[u8], pass: &str) -> Result<Vec<ImportedIdentity>, Error> {
         SET_AT_EXIT.call_once(|| {

src/lib.rs

@@ -190,6 +190,11 @@ impl Identity {
         let identity = imp::Identity::from_pkcs8(pem, key)?;
         Ok(Identity(identity))
     }
+
+    /// Creates a certificate context out of the raw type available on the platform
+    pub fn from_raw(context: imp::RawType) -> Identity {
+        Identity(imp::Identity::from_raw(context))
+    }
 }
 
 /// An X509 certificate.