handles all known pem formats

bin/rasha.js

@@ -18,14 +18,14 @@ try {
 if ('string' === typeof key) {
   var pub = (-1 !== [ 'public', 'spki', 'pkix' ].indexOf(format));
   Rasha.import({ pem: key, public: (pub || format) }).then(function (jwk) {
-    console.log(JSON.stringify(jwk, null, 2));
+    console.info(JSON.stringify(jwk, null, 2));
   }).catch(function (err) {
     console.error(err);
     process.exit(1);
   });
 } else {
   Rasha.export({ jwk: key, format: format }).then(function (pem) {
-    console.log(pem);
+    console.info(pem);
   }).catch(function (err) {
     console.error(err);
     process.exit(2);

lib/rasha.js

@@ -19,7 +19,7 @@ RSA.parse = function parseRsa(opts) {
     var pem = opts.pem;
     var block = PEM.parseBlock(pem);
     //var hex = toHex(u8);
-    var jwk = { kty: 'RSA' };
+    var jwk = { kty: 'RSA', n: null, e: null };
     var asn1 = ASN1.parse(block.der);
 
     var meta = x509.guess(block.der, asn1);
@@ -82,6 +82,31 @@ RSA.parsePkcs1 = function parseRsaPkcs1(buf, asn1, jwk) {
 };
 
 RSA.parsePkcs8 = function parseRsaPkcs8(buf, asn1, jwk) {
-  console.log(asn1);
+  if (2 === asn1.children.length
+    && 0x03 === asn1.children[1].type
+    && 0x30 === asn1.children[1].value[0]) {
+
+    asn1 = ASN1.parse(asn1.children[1].value);
+    jwk.n = Enc.bufToUrlBase64(asn1.children[0].value);
+    jwk.e = Enc.bufToUrlBase64(asn1.children[1].value);
+
+  } else if (3 === asn1.children.length
+    && 0x04 === asn1.children[2].type
+    && 0x30 === asn1.children[2].children[0].type
+    && 0x02 === asn1.children[2].children[0].children[0].type) {
+
+    asn1 = asn1.children[2].children[0];
+    jwk.n = Enc.bufToUrlBase64(asn1.children[1].value);
+    jwk.e = Enc.bufToUrlBase64(asn1.children[2].value);
+    jwk.d = Enc.bufToUrlBase64(asn1.children[3].value);
+    jwk.p = Enc.bufToUrlBase64(asn1.children[4].value);
+    jwk.q = Enc.bufToUrlBase64(asn1.children[5].value);
+    jwk.dp = Enc.bufToUrlBase64(asn1.children[6].value);
+    jwk.dq = Enc.bufToUrlBase64(asn1.children[7].value);
+    jwk.qi = Enc.bufToUrlBase64(asn1.children[8].value);
+
+  } else {
+    throw new Error("not an RSA PKCS#8 public or private key (wrong format)");
+  }
   return jwk;
 };

lib/x509.js

@@ -23,6 +23,8 @@ x509.guess = function (der, asn1) {
     } else {
       throw new Error("not an RSA PKCS#1 public or private key (wrong number of ints)");
     }
+  } else {
+    meta.format = 'pkcs8';
   }
 
   return meta;