diff --git a/src/Bucket.php b/src/Bucket.php
index 513fed0..6ab609d 100755
--- a/src/Bucket.php
+++ b/src/Bucket.php
@@ -10,6 +10,8 @@ class Bucket
     protected $id;
     protected $name;
     protected $type;
+    protected $options;
+    protected $corsRules;
 
     /**
      * Bucket constructor.
@@ -17,12 +19,16 @@ class Bucket
      * @param $id
      * @param $name
      * @param $type
+     * @param $options
+     * @param $corsRules
      */
-    public function __construct($id, $name, $type)
+    public function __construct($id, $name, $type, $options, $corsRules)
     {
         $this->id = $id;
         $this->name = $name;
         $this->type = $type;
+        $this->options = $options;
+        $this->corsRules = $corsRules;
     }
 
     public function getId()
@@ -39,4 +45,19 @@ public function getType()
     {
         return $this->type;
     }
+
+    public function getOptions()
+    {
+        return $this->options;
+    }
+
+    public function getCorsRules()
+    {
+        return $this->corsRules;
+    }
+
+    public function isS3Compatible()
+    {
+        return in_array('s3', $this->getOptions());
+    }
 }
diff --git a/src/Client.php b/src/Client.php
index 999d0e4..c229cd9 100755
--- a/src/Client.php
+++ b/src/Client.php
@@ -75,7 +75,7 @@ public function createBucket(array $options)
             'bucketType' => $options['BucketType'],
         ]);
 
-        return new Bucket($response['bucketId'], $response['bucketName'], $response['bucketType']);
+        return new Bucket($response['bucketId'], $response['bucketName'], $response['bucketType'], $response['options'], $response['corsRules']);
     }
 
     /**
@@ -107,7 +107,7 @@ public function updateBucket(array $options)
             'bucketType' => $options['BucketType'],
         ]);
 
-        return new Bucket($response['bucketId'], $response['bucketName'], $response['bucketType']);
+        return new Bucket($response['bucketId'], $response['bucketName'], $response['bucketType'], $response['options'], $response['corsRules']);
     }
 
     /**
@@ -127,7 +127,7 @@ public function listBuckets()
         ]);
 
         foreach ($response['buckets'] as $bucket) {
-            $buckets[] = new Bucket($bucket['bucketId'], $bucket['bucketName'], $bucket['bucketType']);
+            $buckets[] = new Bucket($bucket['bucketId'], $bucket['bucketName'], $bucket['bucketType'], $bucket['options'], $bucket['corsRules']);
         }
 
         return $buckets;
@@ -776,6 +776,99 @@ protected function finishLargeFile($fileId, array $sha1s)
         );
     }
 
+    /**
+     * List key pairs.
+     *
+     * @param array $options
+     *
+     * @throws ValidationException
+     * @throws GuzzleException     If the request fails.
+     * @throws B2Exception         If the B2 server replies with an error.
+     *
+     * @return Key
+     */
+    public function listKeys(array $options = [])
+    {
+        $request = [
+            'accountId'    => $this->accountId,
+        ];
+
+        if (array_key_exists('MaxKeyCount', $options)) {
+            $request['maxKeyCount'] = $options['MaxKeyCount'];
+        }
+
+        if (array_key_exists('StartApplicationKeyId', $options)) {
+            $request['startApplicationKeyId'] = $options['StartApplicationKeyId'];
+        }
+
+        $response = $this->sendAuthorizedRequest('POST', 'b2_list_keys', $request);
+
+        $keys = [];
+        foreach ($response['keys'] as $key) {
+            $keys[] = new Key($key['applicationKeyId'], $key['keyName'], null, $key['capabilities'], $key['bucketId'], $key['namePrefix'], $key['expirationTimestamp']);
+        }
+
+        return $keys;
+    }
+
+    /**
+     * Create a key pair for the given bucket and permissions.
+     *
+     * @param array $options
+     *
+     * @throws ValidationException
+     * @throws GuzzleException     If the request fails.
+     * @throws B2Exception         If the B2 server replies with an error.
+     *
+     * @return Key
+     */
+    public function createKey(array $options)
+    {
+        $request = [
+            'accountId'    => $this->accountId,
+            'capabilities' => $options['Capabilities'],
+            'keyName'      => $options['KeyName'],
+        ];
+
+        if (array_key_exists('BucketId', $options)) {
+            $request['bucketId'] = $options['BucketId'];
+        }
+
+        if (array_key_exists('NamePrefix', $options)) {
+            $request['namePrefix'] = $options['NamePrefix'];
+        }
+
+        if (array_key_exists('ValidDurationInSeconds', $options)) {
+            $request['validDurationInSeconds'] = $options['ValidDurationInSeconds'];
+        }
+
+        $response = $this->sendAuthorizedRequest('POST', 'b2_create_key', $request);
+
+        return new Key($response['applicationKeyId'], $response['keyName'], $response['applicationKey'], $response['capabilities'], $response['bucketId'], $response['namePrefix'], $response['expirationTimestamp']);
+    }
+
+    /**
+     * Delete a key pair.
+     *
+     * @param array $options
+     *
+     * @throws ValidationException
+     * @throws GuzzleException     If the request fails.
+     * @throws B2Exception         If the B2 server replies with an error.
+     *
+     * @return Key
+     */
+    public function deleteKey(array $options)
+    {
+        $request = [
+            'applicationKeyId' => $options['ApplicationKeyId'],
+        ];
+
+        $response = $this->sendAuthorizedRequest('POST', 'b2_delete_key', $request);
+
+        return new Key($response['applicationKeyId'], $response['keyName'], null, $response['capabilities'], $response['bucketId'], $response['namePrefix'], $response['expirationTimestamp']);
+    }
+
     /**
      * Sends a authorized request to b2 API.
      *
diff --git a/src/Key.php b/src/Key.php
new file mode 100644
index 0000000..8769fd1
--- /dev/null
+++ b/src/Key.php
@@ -0,0 +1,79 @@
+<?php
+
+namespace BackblazeB2;
+
+class Key
+{
+    const PERMISSION_LIST_KEYS = 'listKeys';
+    const PERMISSION_WRITE_KEYS = 'writeKeys';
+    const PERMISSION_DELETE_KEYS = 'deleteKeys';
+    const PERMISSION_LIST_BUCKETS = 'listBuckets';
+    const PERMISSION_WRITE_BUCKETS = 'writeBuckets';
+    const PERMISSION_DELETE_BUCKETS = 'deleteBuckets';
+    const PERMISSION_LIST_FILES = 'listFiles';
+    const PERMISSION_READ_FILES = 'readFiles';
+    const PERMISSION_SHARE_FILES = 'shareFiles';
+    const PERMISSION_WRITE_FILES = 'writeFiles';
+    const PERMISSION_DELETE_FILES = 'deleteFiles';
+
+    protected $id;
+    protected $name;
+    protected $secret;
+    protected $capabilities;
+    protected $bucketId;
+    protected $namePrefix;
+    protected $expirationTimestamp;
+
+    /**
+     * Key constructor.
+     *
+     * @param $id
+     * @param $name
+     * @param $secret
+     */
+    public function __construct($id, $name, $secret, $capabilities, $bucketId, $namePrefix, $expirationTimestamp)
+    {
+        $this->id = $id;
+        $this->name = $name;
+        $this->secret = $secret;
+        $this->capabilities = $capabilities;
+        $this->bucketId = $bucketId;
+        $this->namePrefix = $namePrefix;
+        $this->expirationTimestamp = $expirationTimestamp;
+    }
+
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    public function getSecret()
+    {
+        return $this->secret;
+    }
+
+    public function getCapabilities()
+    {
+        return $this->capabilities;
+    }
+
+    public function getBucketId()
+    {
+        return $this->bucketId;
+    }
+
+    public function getNamePrefix()
+    {
+        return $this->namePrefix;
+    }
+
+    public function getExpirationTimestamp()
+    {
+        return $this->expirationTimestamp;
+    }
+}
diff --git a/tests/responses/create_bucket_private.json b/tests/responses/create_bucket_private.json
index d66f86e..3e19a02 100755
--- a/tests/responses/create_bucket_private.json
+++ b/tests/responses/create_bucket_private.json
@@ -2,5 +2,18 @@
   "bucketId" : "4a48fe8875c6214145260818",
   "accountId" : "010203040506",
   "bucketName" : "Test bucket",
-  "bucketType" : "allPrivate"
-}
\ No newline at end of file
+  "bucketType" : "allPrivate",
+
+  "bucketInfo": [],
+  "corsRules": [],
+  "defaultFileLockConfiguration": {
+    "mode": null,
+    "period": null,
+    "status": "disabled"
+  },
+  "lifecycleRules": [],
+  "options": [
+    "s3"
+  ],
+  "revision": 2
+}
diff --git a/tests/responses/create_bucket_public.json b/tests/responses/create_bucket_public.json
index 8134124..a306443 100755
--- a/tests/responses/create_bucket_public.json
+++ b/tests/responses/create_bucket_public.json
@@ -1,6 +1,19 @@
 {
-  "bucketId" : "4a48fe8875c6214145260818",
-  "accountId" : "010203040506",
-  "bucketName" : "Test bucket",
-  "bucketType" : "allPublic"
-}
\ No newline at end of file
+  "bucketId": "4a48fe8875c6214145260818",
+  "accountId": "010203040506",
+  "bucketName": "Test bucket",
+  "bucketType": "allPublic",
+
+  "bucketInfo": [],
+  "corsRules": [],
+  "defaultFileLockConfiguration": {
+    "mode": null,
+    "period": null,
+    "status": "disabled"
+  },
+  "lifecycleRules": [],
+  "options": [
+    "s3"
+  ],
+  "revision": 2
+}
diff --git a/tests/responses/list_buckets_3.json b/tests/responses/list_buckets_3.json
index 7b6c4fe..0cb933d 100755
--- a/tests/responses/list_buckets_3.json
+++ b/tests/responses/list_buckets_3.json
@@ -4,19 +4,58 @@
       "bucketId": "4a48fe8875c6214145260818",
       "accountId": "30f20426f0b1",
       "bucketName" : "Kitten Videos",
-      "bucketType": "allPrivate"
+      "bucketType": "allPrivate",
+
+      "bucketInfo": [],
+      "corsRules": [],
+      "defaultFileLockConfiguration": {
+        "mode": null,
+        "period": null,
+        "status": "disabled"
+      },
+      "lifecycleRules": [],
+      "options": [
+        "s3"
+      ],
+      "revision": 2
     },
     {
       "bucketId" : "5b232e8875c6214145260818",
       "accountId": "30f20426f0b1",
       "bucketName": "Puppy Videos",
-      "bucketType": "allPublic"
+      "bucketType": "allPublic",
+
+      "bucketInfo": [],
+      "corsRules": [],
+      "defaultFileLockConfiguration": {
+        "mode": null,
+        "period": null,
+        "status": "disabled"
+      },
+      "lifecycleRules": [],
+      "options": [
+        "s3"
+      ],
+      "revision": 2
     },
     {
       "bucketId": "87ba238875c6214145260818",
       "accountId": "30f20426f0b1",
       "bucketName": "Vacation Pictures",
-      "bucketType" : "allPrivate"
+      "bucketType" : "allPrivate",
+
+      "bucketInfo": [],
+      "corsRules": [],
+      "defaultFileLockConfiguration": {
+        "mode": null,
+        "period": null,
+        "status": "disabled"
+      },
+      "lifecycleRules": [],
+      "options": [
+        "s3"
+      ],
+      "revision": 2
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/tests/responses/update_bucket_to_private.json b/tests/responses/update_bucket_to_private.json
index 1de222b..2b90c28 100755
--- a/tests/responses/update_bucket_to_private.json
+++ b/tests/responses/update_bucket_to_private.json
@@ -2,5 +2,18 @@
   "accountId": "accountId",
   "bucketId": "bucketId",
   "bucketName": "test-bucket",
-  "bucketType": "allPrivate"
-}
\ No newline at end of file
+  "bucketType": "allPrivate",
+
+  "bucketInfo": [],
+  "corsRules": [],
+  "defaultFileLockConfiguration": {
+    "mode": null,
+    "period": null,
+    "status": "disabled"
+  },
+  "lifecycleRules": [],
+  "options": [
+    "s3"
+  ],
+  "revision": 2
+}
diff --git a/tests/responses/update_bucket_to_public.json b/tests/responses/update_bucket_to_public.json
index ee57826..5f7acdd 100755
--- a/tests/responses/update_bucket_to_public.json
+++ b/tests/responses/update_bucket_to_public.json
@@ -2,5 +2,18 @@
   "accountId": "accountId",
   "bucketId": "bucketId",
   "bucketName": "test-bucket",
-  "bucketType": "allPublic"
-}
\ No newline at end of file
+  "bucketType": "allPublic",
+
+  "bucketInfo": [],
+  "corsRules": [],
+  "defaultFileLockConfiguration": {
+    "mode": null,
+    "period": null,
+    "status": "disabled"
+  },
+  "lifecycleRules": [],
+  "options": [
+    "s3"
+  ],
+  "revision": 2
+}