diff --git a/README.md b/README.md
index 6a49152..162a0a1 100644
--- a/README.md
+++ b/README.md
@@ -113,7 +113,7 @@ cert = { subject:
 ```
 
 
-#### x509.verify(`cert`, `CABundlePath`, function(err, result){ /*...*/})
+#### x509.verify(`cert`, `CABundle`, function(err, result){ /*...*/})
 
 Performs basic certificate validation against a bundle of ca certificates.
 
@@ -122,9 +122,7 @@ the certificate is valid.
 
 The error messages are the same returned by openssl: [x509_verify_cert_error_string](https://www.openssl.org/docs/man1.0.2/crypto/X509_STORE_CTX_get_error.html)
 
-
-**Note:**
-As now, this function only accepts absolute paths to existing files as arguments
+The cert and CABundle arguments may be any combination of paths or buffers.
 
 ```js
 const x509 = require('x509');
diff --git a/index.js b/index.js
index 539a76c..2b22184 100644
--- a/index.js
+++ b/index.js
@@ -1,3 +1,5 @@
+var Promise = require('promise-polyfill'); // Needed since we're supporting Node 0.10 environments
+
 var x509 = require('./build/Release/x509');
 var fs = require('fs');
 
@@ -6,40 +8,38 @@ exports.getAltNames = x509.getAltNames;
 exports.getSubject = x509.getSubject;
 exports.getIssuer = x509.getIssuer;
 
-exports.verify = function(certPath, CABundlePath, cb) {
-  if (!certPath) {
-    throw new TypeError('Certificate path is required');
+exports.verify = function(certPathOrString, CABundlePathOrString, cb) {
+  if (!certPathOrString) {
+    throw new TypeError('The certificate path or the certificate string itself is required');
   }
-  if (!CABundlePath) {
-    throw new TypeError('CA Bundle path is required');
+  if (!CABundlePathOrString) {
+    throw new TypeError('The certificate bundle path or the bundle string itself is required');
   }
 
-  fs.stat(certPath, function(certPathErr) {
+  Promise.all([
+    getPathOrStringBuffer(certPathOrString),
+    getPathOrStringBuffer(CABundlePathOrString)
+  ]).then(function(results){
+    var certBuffer = results[0];
+    var caBuffer = results[1];
 
-    if (certPathErr) {
-      return cb(certPathErr);
+    try {
+      var parsedCert = x509.parseCert(String(certBuffer));
+    } catch(Exception) {
+      return cb(new TypeError('Unable to parse certificate.'));
     }
 
-    fs.stat(CABundlePath, function(bundlePathErr) {
-
-      if (bundlePathErr) {
-        return cb(bundlePathErr);
-      }
-
-      try {
-        x509.verify(certPath, CABundlePath);
-        cb(null);
-      }
-      catch (verificationError) {
-        cb(verificationError);
-      }
-    });
-  });
+    try {
+      x509.verify(certBuffer, caBuffer);
+      cb(null, parsedCert); //Might as well pass back the parsed certificate on verify
+    } catch (verificationError) {
+      cb(verificationError);
+    }
+  }, cb);
 };
 
-
-exports.parseCert = function(path) {
-  var ret = x509.parseCert(path);
+exports.parseCert = function(pathOrBuffer) {
+  var ret = x509.parseCert(pathOrBuffer);
   var exts = {};
   for (var key in ret.extensions) {
     var newkey = key.replace('X509v3', '').replace(/ /g, '');
@@ -50,3 +50,18 @@ exports.parseCert = function(path) {
   ret.extensions = exts;
   return ret;
 };
+
+function getPathOrStringBuffer(pathOrString){
+  if(String(pathOrString).indexOf('-----BEGIN') === 0){
+    return Promise.resolve(Buffer(pathOrString, 'utf8'));
+  } else{
+    return new Promise(function(res, rej){
+      fs.readFile(pathOrString, function(err, fileBuffer){
+        if(err){
+          return rej(err);
+        }
+        res(fileBuffer)
+      })
+    });
+  }
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index 9009c5e..dae8c75 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
   },
   "license": "MIT",
   "dependencies": {
-    "nan": "2.2.0"
+    "nan": "2.2.0",
+    "promise-polyfill": "^6.0.2"
   }
 }
diff --git a/src/x509.cc b/src/x509.cc
index 0e04958..df427f4 100644
--- a/src/x509.cc
+++ b/src/x509.cc
@@ -46,64 +46,109 @@ std::string parse_args(const Nan::FunctionCallbackInfo<v8::Value>& info) {
   return *String::Utf8Value(info[0]->ToString());
 }
 
-
-
 NAN_METHOD(verify) {
   Nan::HandleScope scope;
   OpenSSL_add_all_algorithms();
 
-  std::string cert_path = *String::Utf8Value(info[0]->ToString());
-  std::string ca_bundlestr = *String::Utf8Value(info[1]->ToString());
+  std::string cert_buffer = *String::Utf8Value(info[0]->ToString());
+  std::string ca_buffer = *String::Utf8Value(info[1]->ToString());
 
   X509_STORE *store = NULL;
   X509_STORE_CTX *verify_ctx = NULL;
   X509 *cert = NULL;
-  BIO *cert_bio = BIO_new(BIO_s_file());
+  BIO *cert_bio = NULL;
 
   // create store
   store = X509_STORE_new();
   if (store == NULL) {
-    X509_STORE_free(store);
-    BIO_free_all(cert_bio);
     Nan::ThrowError("Failed to create X509 certificate store.");
+    ERR_clear_error();
+    return;
   }
 
+  // create store context
   verify_ctx = X509_STORE_CTX_new();
-
   if (verify_ctx == NULL) {
     X509_STORE_free(store);
-    BIO_free_all(cert_bio);
+    ERR_clear_error();
     Nan::ThrowError("Failed to create X509 verification context.");
+    return;
   }
 
-  // load file in BIO
-  int ret = BIO_read_filename(cert_bio, cert_path.c_str());
-  if (ret != 1) {
+  // load cert buffer into BIO
+  cert_bio = BIO_new(BIO_s_mem());
+  if (cert_bio == NULL) {
+    X509_STORE_CTX_free(verify_ctx);
     X509_STORE_free(store);
-    X509_free(cert);
+    ERR_clear_error();
+    Nan::ThrowError("Failed to create certificate buffer");
+    return;
+  }
+
+  int ret = BIO_puts(cert_bio, cert_buffer.c_str());
+  if (ret <= 0) {
     BIO_free_all(cert_bio);
     X509_STORE_CTX_free(verify_ctx);
-    Nan::ThrowError("Error reading file");
+    X509_STORE_free(store);
+    ERR_clear_error();
+    Nan::ThrowError("Error loading certificate");
+    return;
   }
 
   // read from BIO
   cert = PEM_read_bio_X509(cert_bio, NULL, 0, NULL);
   if (cert == NULL) {
-    X509_STORE_free(store);
-    X509_free(cert);
-    X509_STORE_CTX_free(verify_ctx);
     BIO_free_all(cert_bio);
+    X509_STORE_CTX_free(verify_ctx);
+    X509_STORE_free(store);
+    ERR_clear_error();
     Nan::ThrowError("Failed to load cert");
+    return;
   }
 
-  // load CA bundle
-  ret = X509_STORE_load_locations(store, ca_bundlestr.c_str(), NULL);
-  if (ret != 1) {
+  // load CA bundle from memory or path
+  STACK_OF(X509_INFO) *ca_inf_stack;
+  BIO *bio_ca = BIO_new(BIO_s_mem());
+  if (bio_ca == NULL) {
+    X509_free(cert);
+    BIO_free_all(cert_bio);
+    X509_STORE_CTX_free(verify_ctx);
+    X509_STORE_free(store);
+    ERR_clear_error();
+    Nan::ThrowError("Failed to create ca buffer");
+    return;
+  }
+  ret = BIO_puts(bio_ca, ca_buffer.c_str());
+  if (ret == -1) {
+    BIO_free_all(bio_ca);
+    X509_free(cert);
+    BIO_free_all(cert_bio);
+    X509_STORE_CTX_free(verify_ctx);
     X509_STORE_free(store);
+    ERR_clear_error();
+    Nan::ThrowError("Failed to load ca buffer");
+    return;
+  }
+  ca_inf_stack = PEM_X509_INFO_read_bio(bio_ca, NULL, NULL, NULL);
+  if (ca_inf_stack == NULL) {
+    BIO_free_all(bio_ca);
     X509_free(cert);
     BIO_free_all(cert_bio);
     X509_STORE_CTX_free(verify_ctx);
-    Nan::ThrowError("Error loading CA chain file");
+    X509_STORE_free(store);
+    ERR_clear_error();
+    Nan::ThrowError("Failed to load ca");
+    return;
+  }
+  // Loop through all certs in the CA
+  for (int i = 0; i < sk_X509_INFO_num(ca_inf_stack); i++) {
+    X509_INFO *ca_inf = sk_X509_INFO_value(ca_inf_stack, i);
+    if (ca_inf->x509) {
+      X509_STORE_add_cert(store, ca_inf->x509);
+    }
+    if(ca_inf->crl) {
+      X509_STORE_add_crl(store, ca_inf->crl);
+    }
   }
 
   // verify
@@ -111,15 +156,27 @@ NAN_METHOD(verify) {
   ret = X509_verify_cert(verify_ctx);
 
   if (ret <= 0) {
-    Nan::ThrowError(X509_verify_cert_error_string(verify_ctx->error));
+    int verify_error = verify_ctx->error;
+    sk_X509_INFO_pop_free(ca_inf_stack, X509_INFO_free);
+    BIO_free_all(bio_ca);
+    X509_free(cert);
+    BIO_free_all(cert_bio);
+    X509_STORE_CTX_free(verify_ctx);
+    X509_STORE_free(store);
+    Nan::ThrowError(X509_verify_cert_error_string(verify_error));
+    ERR_clear_error();
+    return;
   }
 
-  X509_STORE_free(store);
+  sk_X509_INFO_pop_free(ca_inf_stack, X509_INFO_free);
+  BIO_free_all(bio_ca);
   X509_free(cert);
-  X509_STORE_CTX_free(verify_ctx);
   BIO_free_all(cert_bio);
+  X509_STORE_CTX_free(verify_ctx);
+  X509_STORE_free(store);
 
- info.GetReturnValue().Set(Nan::New(true));
+  info.GetReturnValue().Set(Nan::New(true));
+  ERR_clear_error();
 }
 
 
diff --git a/test/certs/enduser-example-bad.com.crt b/test/certs/enduser-example-bad.com.crt
new file mode 100644
index 0000000..272e99a
--- /dev/null
+++ b/test/certs/enduser-example-bad.com.crt
@@ -0,0 +1,3 @@
+-----BEGIN CERTIFICATE-----
+this is not the certificate you are looking for...
+-----END CERTIFICATE-----
diff --git a/test/certs/enduser-example-malformed.com.crt b/test/certs/enduser-example-malformed.com.crt
new file mode 100644
index 0000000..4f4d318
--- /dev/null
+++ b/test/certs/enduser-example-malformed.com.crt
@@ -0,0 +1,43 @@
+-----BEGIN CERTIFICATE-----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==
+-----END CERTIFICATE-----
diff --git a/test/test.js b/test/test.js
index c364fdc..04f6741 100644
--- a/test/test.js
+++ b/test/test.js
@@ -6,35 +6,71 @@ var x509 = require('../index'),
 // All cert files should read without throwing an error.
 // Simple enough test, no?
 fs.readdirSync(path.join(__dirname, 'certs')).forEach(function (file) {
+  if (file === 'enduser-example-bad.com.crt') return;
   console.log("File: %s", file);
   console.log(x509.parseCert(path.join(__dirname, 'certs', file)));
   // x509.parseCert(path.join(__dirname, 'certs', file));
   console.log();
 });
 
+function fillPath(filename) {
+  return path.join(__dirname, filename)
+}
 
-x509.verify(
-  path.join(__dirname, 'certs/enduser-example.com.crt'),
-  path.join(__dirname, 'CA_chains/enduser-example.com.chain'),
+function loadFile(filename) {
+  return fs.readFileSync(fillPath(filename))
+}
+
+
+function x509_verify_test(cert_path, ca_path, cb) {
+  x509.verify(fillPath(cert_path), fillPath(ca_path), cb);
+  x509.verify(loadFile(cert_path), fillPath(ca_path), cb);
+  x509.verify(fillPath(cert_path), loadFile(ca_path), cb);
+  x509.verify(loadFile(cert_path), loadFile(ca_path), cb);
+}
+
+x509_verify_test(
+  'certs/enduser-example.com.crt',
+  'CA_chains/enduser-example.com.chain',
   function (err) {
+    console.log('x509 verify');
     assert.strictEqual(err, null);
   }
 );
 
+x509_verify_test(
+  'certs/enduser-example-bad.com.crt',
+  'CA_chains/enduser-example.com.chain',
+  function (err) {
+    console.log('x509 verify invalid cert');
+    assert.throws(assert.ifError.bind(null, err), /Unable to parse certificate./)
+  }
+);
+
+x509_verify_test(
+  'certs/enduser-example-malformed.com.crt',
+  'CA_chains/enduser-example.com.chain',
+  function (err) {
+    console.log('x509 verify altered cert');
+    assert.throws(assert.ifError.bind(null, err), /certificate signature failure/)
+  }
+);
 
 
-x509.verify(
-  path.join(__dirname, 'certs/acaline.com.crt'),
-  path.join(__dirname, 'CA_chains/enduser-example.com.chain'),
+x509_verify_test(
+  'certs/acaline.com.crt',
+  'CA_chains/enduser-example.com.chain',
   function (err, result) {
+    console.log('x509 verify no local issuer');
     assert.throws(assert.ifError.bind(null, err), /unable to get local issuer/)
   }
 );
 
 x509.verify(
-  path.join(__dirname, 'certs/notexisting.com.crt'),
-  path.join(__dirname, 'CA_chains/enduser-example.com.chain'),
+  'certs/notexisting.com.crt',
+  'CA_chains/enduser-example.com.chain',
   function (err, result) {
+    console.log('x509 verify no local file');
     assert.throws(assert.ifError.bind(null, err), /ENOENT/)
   }
 );