diff --git a/lib/x509-ec-parser.js b/lib/x509-ec-parser.js
new file mode 100644
index 0000000..a59e20a
--- /dev/null
+++ b/lib/x509-ec-parser.js
@@ -0,0 +1,119 @@
+'use strict';
+
+var Enc = require('./encoding.js');
+var x509 = module.exports;
+
+// 1.2.840.10045.3.1.7
+// prime256v1 (ANSI X9.62 named elliptic curve)
+var OBJ_ID_EC_256  = '06 08 2A8648CE3D030107'.replace(/\s+/g, '').toLowerCase();
+// 1.3.132.0.34
+// secp384r1 (SECG (Certicom) named elliptic curve)
+var OBJ_ID_EC_384 = '06 05 2B81040022'.replace(/\s+/g, '').toLowerCase();
+
+x509.parseSec1 = function parseEcOnlyPrivkey(u8, jwk) {
+  var index = 7;
+  var len = 32;
+  var olen = OBJ_ID_EC_256.length/2;
+
+  if ("P-384" === jwk.crv) {
+    olen = OBJ_ID_EC_384.length/2;
+    index = 8;
+    len = 48;
+  }
+  if (len !== u8[index - 1]) {
+    throw new Error("Unexpected bitlength " + len);
+  }
+
+  // private part is d
+  var d = u8.slice(index, index + len);
+  // compression bit index
+  var ci = index + len + 2 + olen + 2 + 3;
+  var c = u8[ci];
+  var x, y;
+
+  if (0x04 === c) {
+    y = u8.slice(ci + 1 + len, ci + 1 + len + len);
+  } else if (0x02 !== c) {
+    throw new Error("not a supported EC private key");
+  }
+  x = u8.slice(ci + 1, ci + 1 + len);
+
+  return {
+    kty: jwk.kty
+  , crv: jwk.crv
+  , d: Enc.bufToUrlBase64(d)
+  //, dh: Enc.bufToHex(d)
+  , x: Enc.bufToUrlBase64(x)
+  //, xh: Enc.bufToHex(x)
+  , y: Enc.bufToUrlBase64(y)
+  //, yh: Enc.bufToHex(y)
+  };
+};
+
+x509.parsePkcs8 = function parseEcPkcs8(u8, jwk) {
+  var index = 24 + (OBJ_ID_EC_256.length/2);
+  var len = 32;
+  if ("P-384" === jwk.crv) {
+    index = 24 + (OBJ_ID_EC_384.length/2) + 2;
+    len = 48;
+  }
+
+  //console.log(index, u8.slice(index));
+  if (0x04 !== u8[index]) {
+    //console.log(jwk);
+    throw new Error("privkey not found");
+  }
+  var d = u8.slice(index+2, index+2+len);
+  var ci = index+2+len+5;
+  var xi = ci+1;
+  var x = u8.slice(xi, xi + len);
+  var yi = xi+len;
+  var y;
+  if (0x04 === u8[ci]) {
+    y = u8.slice(yi, yi + len);
+  } else if (0x02 !== u8[ci]) {
+    throw new Error("invalid compression bit (expected 0x04 or 0x02)");
+  }
+
+  return {
+    kty: jwk.kty
+  , crv: jwk.crv
+  , d: Enc.bufToUrlBase64(d)
+  //, dh: Enc.bufToHex(d)
+  , x: Enc.bufToUrlBase64(x)
+  //, xh: Enc.bufToHex(x)
+  , y: Enc.bufToUrlBase64(y)
+  //, yh: Enc.bufToHex(y)
+  };
+};
+
+x509.parseSpki = function parsePem(u8, jwk) {
+  var ci = 16 + OBJ_ID_EC_256.length/2;
+  var len = 32;
+
+  if ("P-384" === jwk.crv) {
+    ci = 16 + OBJ_ID_EC_384.length/2;
+    len = 48;
+  }
+
+  var c = u8[ci];
+  var xi = ci + 1;
+  var x = u8.slice(xi, xi + len);
+  var yi = xi + len;
+  var y;
+  if (0x04 === c) {
+    y = u8.slice(yi, yi + len);
+  } else if (0x02 !== c) {
+    throw new Error("not a supported EC private key");
+  }
+
+  return {
+    kty: jwk.kty
+  , crv: jwk.crv
+  , x: Enc.bufToUrlBase64(x)
+  //, xh: Enc.bufToHex(x)
+  , y: Enc.bufToUrlBase64(y)
+  //, yh: Enc.bufToHex(y)
+  };
+};
+x509.parsePkix = x509.parseSpki;
diff --git a/lib/x509-parser.js b/lib/x509-parser.js
index 870d5ba..84691da 100644
--- a/lib/x509-parser.js
+++ b/lib/x509-parser.js
@@ -1,119 +1,76 @@
 'use strict';
 
-var Enc = require('./encoding.js');
 var x509 = module.exports;
 
-// 1.2.840.10045.3.1.7
-// prime256v1 (ANSI X9.62 named elliptic curve)
-var OBJ_ID_EC  = '06 08 2A8648CE3D030107'.replace(/\s+/g, '').toLowerCase();
-// 1.3.132.0.34
-// secp384r1 (SECG (Certicom) named elliptic curve)
-var OBJ_ID_EC_384 = '06 05 2B81040022'.replace(/\s+/g, '').toLowerCase();
+var PEM = require('./pem-parser.js');
+var EC = require('./x509-ec-parser.js');
+var RSA = require('./x509-rsa-parser.js');
 
-x509.parseSec1 = function parseEcOnlyPrivkey(u8, jwk) {
-  var index = 7;
-  var len = 32;
-  var olen = OBJ_ID_EC.length/2;
-
-  if ("P-384" === jwk.crv) {
-    olen = OBJ_ID_EC_384.length/2;
-    index = 8;
-    len = 48;
+x509.parse = function (opts) {
+  var pem = opts.pem;
+  var der = opts.der;
+  var typ;
+  var pub;
+  var prv;
+  var ec;
+  var rsa;
+  if ('string' === opts.key) {
+    pem = opts.key;
+  } else if (opts.key && opts.key.length) {
+    der = opts.key;
   }
-  if (len !== u8[index - 1]) {
-    throw new Error("Unexpected bitlength " + len);
+  if (pem) {
+    pem = PEM.parseBlock(pem);
+    der = pem.bytes;
+    typ = pem.type;
+    pub = /PUBLIC KEY/.test(typ);
+    prv = /PRIVATE KEY/.test(typ);
+    ec = /EC P/.test(typ);
+    rsa = /RSA P/.test(typ);
   }
 
-  // private part is d
-  var d = u8.slice(index, index + len);
-  // compression bit index
-  var ci = index + len + 2 + olen + 2 + 3;
-  var c = u8[ci];
-  var x, y;
-
-  if (0x04 === c) {
-    y = u8.slice(ci + 1 + len, ci + 1 + len + len);
-  } else if (0x02 !== c) {
-    throw new Error("not a supported EC private key");
+  // Try EC Private and Public keys
+  if (!rsa) {
+    if (!pub) {
+      try {
+        return EC.parsePkcs8(der);
+      } catch(e) {
+        try {
+          return EC.parseSec1(der);
+        } catch(e) {
+          // ignore
+        }
+      }
+    }
+    if (!prv) {
+      return EC.parseSpki(der);
+    }
   }
-  x = u8.slice(ci + 1, ci + 1 + len);
 
-  return {
-    kty: jwk.kty
-  , crv: jwk.crv
-  , d: Enc.bufToUrlBase64(d)
-  //, dh: Enc.bufToHex(d)
-  , x: Enc.bufToUrlBase64(x)
-  //, xh: Enc.bufToHex(x)
-  , y: Enc.bufToUrlBase64(y)
-  //, yh: Enc.bufToHex(y)
-  };
+  // Try RSA Private and Public keys
+  if (!ec) {
+    if (!pub) {
+      try {
+        return RSA.parsePkcs8(der);
+      } catch(e) {
+        try {
+          return RSA.parsePkcs1(der);
+        } catch(e) {
+          // ignore
+        }
+      }
+    }
+    if (!prv) {
+      try {
+        return RSA.parseSpki(der);
+      } catch(e) {
+        try {
+          return RSA.parsePublicPkcs1(der);
+        } catch(e) {
+          // ignore
+        }
+      }
+    }
+  }
+  throw new Error("doesn't appear to be a valid key file. Tried PKCS1, SEC1, PKCS8, and SPKI/PKIX");
 };
-
-x509.parsePkcs8 = function parseEcPkcs8(u8, jwk) {
-  var index = 24 + (OBJ_ID_EC.length/2);
-  var len = 32;
-  if ("P-384" === jwk.crv) {
-    index = 24 + (OBJ_ID_EC_384.length/2) + 2;
-    len = 48;
-  }
-
-  //console.log(index, u8.slice(index));
-  if (0x04 !== u8[index]) {
-    //console.log(jwk);
-    throw new Error("privkey not found");
-  }
-  var d = u8.slice(index+2, index+2+len);
-  var ci = index+2+len+5;
-  var xi = ci+1;
-  var x = u8.slice(xi, xi + len);
-  var yi = xi+len;
-  var y;
-  if (0x04 === u8[ci]) {
-    y = u8.slice(yi, yi + len);
-  } else if (0x02 !== u8[ci]) {
-    throw new Error("invalid compression bit (expected 0x04 or 0x02)");
-  }
-
-  return {
-    kty: jwk.kty
-  , crv: jwk.crv
-  , d: Enc.bufToUrlBase64(d)
-  //, dh: Enc.bufToHex(d)
-  , x: Enc.bufToUrlBase64(x)
-  //, xh: Enc.bufToHex(x)
-  , y: Enc.bufToUrlBase64(y)
-  //, yh: Enc.bufToHex(y)
-  };
-};
-
-x509.parseSpki = function parsePem(u8, jwk) {
-  var ci = 16 + OBJ_ID_EC.length/2;
-  var len = 32;
-
-  if ("P-384" === jwk.crv) {
-    ci = 16 + OBJ_ID_EC_384.length/2;
-    len = 48;
-  }
-
-  var c = u8[ci];
-  var xi = ci + 1;
-  var x = u8.slice(xi, xi + len);
-  var yi = xi + len;
-  var y;
-  if (0x04 === c) {
-    y = u8.slice(yi, yi + len);
-  } else if (0x02 !== c) {
-    throw new Error("not a supported EC private key");
-  }
-
-  return {
-    kty: jwk.kty
-  , crv: jwk.crv
-  , x: Enc.bufToUrlBase64(x)
-  //, xh: Enc.bufToHex(x)
-  , y: Enc.bufToUrlBase64(y)
-  //, yh: Enc.bufToHex(y)
-  };
-};
-x509.parsePkix = x509.parseSpki;