diff --git a/openssl-sys/src/lib.rs b/openssl-sys/src/lib.rs
index ec96c4fb..1b4d66ab 100644
--- a/openssl-sys/src/lib.rs
+++ b/openssl-sys/src/lib.rs
@@ -2421,6 +2421,8 @@ extern "C" {
 
     pub fn i2d_RSA_PUBKEY(k: *mut RSA, buf: *mut *mut u8) -> c_int;
     pub fn d2i_RSA_PUBKEY(k: *mut *mut RSA, buf: *mut *const u8, len: c_long) -> *mut RSA;
+    pub fn i2d_RSAPublicKey(k: *const RSA, buf: *mut *mut u8) -> c_int;
+    pub fn d2i_RSAPublicKey(k: *mut *mut RSA, buf: *mut *const u8, len: c_long) -> *mut RSA;
     pub fn i2d_RSAPrivateKey(k: *const RSA, buf: *mut *mut u8) -> c_int;
     pub fn d2i_RSAPrivateKey(k: *mut *mut RSA, buf: *mut *const u8, len: c_long) -> *mut RSA;
 
diff --git a/openssl/src/rsa.rs b/openssl/src/rsa.rs
index 31e1a349..22a9c36f 100644
--- a/openssl/src/rsa.rs
+++ b/openssl/src/rsa.rs
@@ -38,12 +38,16 @@ foreign_type! {
 }
 
 impl RsaRef {
+    // FIXME these need to specify output format
     private_key_to_pem!(ffi::PEM_write_bio_RSAPrivateKey);
     public_key_to_pem!(ffi::PEM_write_bio_RSA_PUBKEY);
 
     private_key_to_der!(ffi::i2d_RSAPrivateKey);
     public_key_to_der!(ffi::i2d_RSA_PUBKEY);
 
+    to_der_inner!(/// Serializes the public key to DER-encoded PKCS#1.
+        public_key_to_der_pkcs1, ffi::i2d_RSAPublicKey);
+
     // FIXME should return u32
     pub fn size(&self) -> usize {
         unsafe {
@@ -255,11 +259,15 @@ impl Rsa {
         }
     }
 
+    // FIXME these need to identify input formats
     private_key_from_pem!(Rsa, ffi::PEM_read_bio_RSAPrivateKey);
     private_key_from_der!(Rsa, ffi::d2i_RSAPrivateKey);
     public_key_from_pem!(Rsa, ffi::PEM_read_bio_RSA_PUBKEY);
     public_key_from_der!(Rsa, ffi::d2i_RSA_PUBKEY);
 
+    from_der_inner!(/// Deserializes a public key from DER-encoded PKCS#1 data.
+        public_key_from_der_pkcs1, Rsa, ffi::d2i_RSAPublicKey);
+
     #[deprecated(since = "0.9.2", note = "use private_key_from_pem_callback")]
     pub fn private_key_from_pem_cb<F>(buf: &[u8], pass_cb: F) -> Result<Rsa, ErrorStack>
         where F: FnOnce(&mut [c_char]) -> usize
@@ -440,5 +448,4 @@ mod test {
         let len = k1.private_decrypt(&emesg, &mut dmesg, PKCS1_PADDING).unwrap();
         assert_eq!(msg, &dmesg[..len]);
     }
-
 }