diff --git a/phpseclib/Crypt/RSA.php b/phpseclib/Crypt/RSA.php
index 95617510..a0fbc285 100644
--- a/phpseclib/Crypt/RSA.php
+++ b/phpseclib/Crypt/RSA.php
@@ -742,18 +742,18 @@ class Crypt_RSA
      */
     function _convertPrivateKey($n, $e, $d, $primes, $exponents, $coefficients)
     {
-        $unsigned = $this->privateKeyFormat == CRYPT_RSA_PRIVATE_FORMAT_XML;
+        $signed = $this->privateKeyFormat != CRYPT_RSA_PRIVATE_FORMAT_XML;
         $num_primes = count($primes);
         $raw = array(
             'version' => $num_primes == 2 ? chr(0) : chr(1), // two-prime vs. multi
-            'modulus' => $n->toBytes($unsigned),
-            'publicExponent' => $e->toBytes($unsigned),
-            'privateExponent' => $d->toBytes($unsigned),
-            'prime1' => $primes[1]->toBytes($unsigned),
-            'prime2' => $primes[2]->toBytes($unsigned),
-            'exponent1' => $exponents[1]->toBytes($unsigned),
-            'exponent2' => $exponents[2]->toBytes($unsigned),
-            'coefficient' => $coefficients[2]->toBytes($unsigned)
+            'modulus' => $n->toBytes($signed),
+            'publicExponent' => $e->toBytes($signed),
+            'privateExponent' => $d->toBytes($signed),
+            'prime1' => $primes[1]->toBytes($signed),
+            'prime2' => $primes[2]->toBytes($signed),
+            'exponent1' => $exponents[1]->toBytes($signed),
+            'exponent2' => $exponents[2]->toBytes($signed),
+            'coefficient' => $coefficients[2]->toBytes($signed)
         );
 
         // if the format in question does not support multi-prime rsa and multi-prime rsa was used,
@@ -942,10 +942,10 @@ class Crypt_RSA
      */
     function _convertPublicKey($n, $e)
     {
-        $unsigned = $this->publicKeyFormat == CRYPT_RSA_PUBLIC_FORMAT_XML;
+        $signed = $this->publicKeyFormat != CRYPT_RSA_PUBLIC_FORMAT_XML;
 
-        $modulus = $n->toBytes($unsigned);
-        $publicExponent = $e->toBytes($unsigned);
+        $modulus = $n->toBytes($signed);
+        $publicExponent = $e->toBytes($signed);
 
         switch ($this->publicKeyFormat) {
             case CRYPT_RSA_PUBLIC_FORMAT_RAW:
diff --git a/tests/Unit/Crypt/RSA/LoadKeyTest.php b/tests/Unit/Crypt/RSA/LoadKeyTest.php
index ff5d332e..b1b078ad 100644
--- a/tests/Unit/Crypt/RSA/LoadKeyTest.php
+++ b/tests/Unit/Crypt/RSA/LoadKeyTest.php
@@ -270,13 +270,35 @@ Ao8eayMp6FcvNucIpUndo1X8dKMv3Y26ZQIDAQAB
         $rsa = new Crypt_RSA();
 
         $key = '<RSAKeyValue>
-<Modulus>v5OxcEgxPUfa701NpxnScCmlRkbwSGBiTWobHkIWZEB+AlRTHaVoZg/D8l6YzR7VdQidG6gF+nuUMjY75dBXgY/XcyVq0Hccf1jTfgARuNuq4GGG3hnCJVi2QsOgcf9R7TeXn+p1RKIhjQoWCiEQeEBTotNbJhcabNcPGSEJw+s=</Modulus>
-<Exponent>AQAB</Exponent>
+  <Modulus>v5OxcEgxPUfa701NpxnScCmlRkbwSGBiTWobHkIWZEB+AlRTHaVoZg/D8l6YzR7VdQidG6gF+nuUMjY75dBXgY/XcyVq0Hccf1jTfgARuNuq4GGG3hnCJVi2QsOgcf9R7TeXn+p1RKIhjQoWCiEQeEBTotNbJhcabNcPGSEJw+s=</Modulus>
+  <Exponent>AQAB</Exponent>
 </RSAKeyValue>';
 
         $rsa->loadKey($key);
+        $rsa->setPublicKey();
         $newkey = $rsa->getPublicKey(CRYPT_RSA_PUBLIC_FORMAT_XML);
 
         $this->assertSame($key, $newkey);
     }
+
+    /**
+    * @group github468
+    */
+    public function testSignedPKCS1()
+    {
+        $rsa = new Crypt_RSA();
+
+        $key = '-----BEGIN PUBLIC KEY-----
+MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC/k7FwSDE9R9rvTU2nGdJwKaVG
+RvBIYGJNahseQhZkQH4CVFMdpWhmD8PyXpjNHtV1CJ0bqAX6e5QyNjvl0FeBj9dz
+JWrQdxx/WNN+ABG426rgYYbeGcIlWLZCw6Bx/1HtN5ef6nVEoiGNChYKIRB4QFOi
+01smFxps1w8ZIQnD6wIDAQAB
+-----END PUBLIC KEY-----';
+
+        $rsa->loadKey($key);
+        $rsa->setPublicKey();
+        $newkey = $rsa->getPublicKey();
+
+        $this->assertSame($key, $newkey);
+    }
 }